Alexander Abreu Manresa (September 6, 1976) is a Cuban trumpet player, songwriter and singer. He leads the band Havana D'Primera. He was born in Cienfuegos on September 6, 1976. By the age of 20, he
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb447b04a595dfe5d0d98e790a8647addbe9d911c2ba9f7680cfefb3de630e459. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ffaeef0-fef4-4d6a-a6ed-deeb73904471.json and https://artists.proofprofile.net/proofs/artist/0ffaeef0-fef4-4d6a-a6ed-deeb73904471.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de33be6e4ce47793a99bae39919ffa236f5baf31b80274de0bed6ffef1ae7ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM91387343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe487abddd03ecbe6e34fc07c93524405e57797a52636766f19034dcc1e7c6531. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM91387344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6f9ba459d88e3faa22d729a4aca90045386a304f2df687745bad8a8f43ef3a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42455417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7676de9290b7ea0ce2cd2aa6d0596e2b597ea0b78e8b572b874c37d7e38609c2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42455418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71f2a703d9732863b9272eb763608ffa73ea93b0466d95c719cf6a9de61c960. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42455419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfeb8c8d9f8645836f95852662162d7e939b164f524ce133a5f05c7ddb0d3e13. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42455420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8bd28d67735c6dd491fcf60f29580b1117da1e5940b220643e45326ca922f9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42455421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcc313907579d14746c2c6d9daff37aa0977e4b218cec9a0a8e07dfd53cda4c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42455423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2378cb8f5118d4f796b1bed51676ef4a28ce81f356afc55f49e9a48a40be1dfb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42455424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb23b34139f5016c6e1cde2bd3c9cebd05ecac05b90d653c36d3dcf2a8607bb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDXS2303953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aadccff0962be7401b1e8b6816db413ed635e35c98d21aed8703ca8644df31e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e0d3e8b5d2db0b41fc77a4bc893ff4eb9d70b79392c816225b4d7b52ab2672. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622011f5b4c19f267793b8bc996e75c52cb4c26e7b4149845e564dcf43c4a1aa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a692c0f2eae60d7728813359118b275d89f5e00a87853eab694b0f57af1ab74. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01d245214beb8fc7b771910d88e8db584455044a65810b2d26dc65844194a77. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7745567a56586525a5e78fed25974c286d08157284638a23879d04a0fd4d0fe6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b24f31104bdb4fa3cc41f7ceea1a091afb96c1bd301029c0b44ad397318c7cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdbcbc80376c3c8118d4187f25985331b5ad693e575a984a15f3c44f8961a98. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a08579c3b4ef855c2c54ac17dea7eedd6c285b39e0c8932f1e87b9a78de15c4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd716101ab1407569d72bfbfb86651dcb861d034f973532bfbdad79bd9c8333ba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9363293b604f89e98693076e83e9d60c2bff9aaca5eb8018542cb66aa939ba5b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7da3d6929f4cdd5e2bd8cb2e7659c88b64f2dd587a2d6a11f1ddb512d0cc3c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950658101db7b5afddba10cf5bd6558de88241817bd2a116b658ee068837280f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541e70423bd4609c2ed61aa3787a436665ba8c422ba18c319eb044567ab7fb7c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1b1230c5485ad8bf1137204bd6e6c10852b3da880dc398371a404eff88c735. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f24e1e13963477cfb8d2dee582306c794ab09d65345c5d9516588fa3166764. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4d7d6d50977b408942b4f33d20bcc82952a30b4267f520af1ccbd7c69e3edd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b4d247a450dd462b32d06806e403f3276213ea5c0ebb11d205b671b59ac960. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf416232b1759a0cdf2c0eacce017d1896dc3f5cbf22ac78ae506bee4067193e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c91e1aa783b0694e2ccbec21d6924554bc84df2ecb69ca11c5fe7a44f48bb3f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143b87678a5544ff3cdb44d497589512cd4be3f59f24b0ed6f46f00d9717f9a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA011913101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d09d6c4ad439c2b28972a6f3747140742c289d4d0a8152927c13b482ad24f6b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA011913102.
Popurrí de Arsenio Rodríguez: Cambia el paso / Mami me gustó / Sandunguera / Con un amor se borra otro amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13d4589a649fa6a1a743d6b117e7786707b48ac424a9d26fb37fc384fec1faa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA011913103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bd691714a479c0957dfbd329c69f9fd09dad8a439de7291d63389d2045f2e4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA011913104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85c9b0411241e9c89db4957c8acf713d7b0ab7cf4858b646901d5ce16cdeedc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA011913105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ae3c1ff1b49d8dc190dbae88ac02d25dd135901e5fbca8a68fbae75002739f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA011913106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e9077458b4d0b08b7a984be7c4f7ff9f7b5f26d747b03311fc305c20eb5243. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA011913107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa186c23e8f29f1c664842d705360d6bdd62e6a7fa81a65377f046998fadee3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA011913108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75850d28ac26f452d48ef59f6ecfee1835164d5a33b50026d0a3e19e36c91564. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA011913109.
Popurrí de Son 14: Agua que cae del cielo / El son de la madrugada / Se quema la trocha / A Bayamo en coche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d90acb043e0f0ef12f1e61486ea09c12c0aec798ecebd66d2f4eecfbb96be5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA011913110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888097a16450dd93f13cd43f158a999607546f924606bb6a80bd3dd5eb2add78. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21323464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e1cb711a4a30bf28e9cc03d86b613487476aeccdfbfbdaab99b91bce819b37. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21323465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca48594a8f2e152ee7f881586601f75af24e2b026537854a8dec1e355fd5ed9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21323466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b579d959d434af959c328e8382817c38ef3859bff23d9f42479a66b9c52218. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21323468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9310df70296abfd6230e170f3612d092c4dd9ce7fa33a79020f6f48f654efd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21323469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76913732d6c69b1a745c3912f7e08e95a207d0fed3d8feacf7c032bee9e92d75. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21323470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca9d0d8d6362595003cfd14b298c16f959314c0e01a02d95551a2e31c4b791c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21323471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726966a5b7cf089852ac43afbc7911c9c3bc1e0253ad4f9730385c5b4a80988d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21323472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eae18d9eccb1f89a6086c67a9017d0d829a4da9ca2863501774c5ebd02e4156. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21323473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c18ae50e37c49d4c0f9d6734b608cf5b664d61ac91278acf122343335a01a22. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES66E2400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc197dc1313d5a9abe585dbdf3e137352086acb1d5edcb7fc295074939d5b53. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAOMC2400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ec8317547d491135d31259ef97919ea3f665aa0bd1d874fbde99eb24b87a67. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2465706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed0b2c537c8e8e56272ecd601305c88a0f55689b7bbfc3d574997747d4f10af. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES16E2200477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b10ebe24672cc9b66ed4ded6f1969d6526e437a59fb94e0f78ad314cc31a0c9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2224659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ca21e87c295d156c318544b07ca64cda9a05882b50a097d3b06c2c656be194. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA012200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518d995a591e145c8e5909043d954f141efd099ddf9b8ea40bf889fbb9d4e5b0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA012263881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abc640ee0f59bb452cfabf92d2bfcc34b23dd8f46fa7e4b68ca4d77c4816e02. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ2276083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb239679ec0c6a498c11e783c20c67e32abba9520e9f219289e9bf2812e2bfe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFW2169400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29227e329229b2bfaf2c7b8b667eb25ba206cf38d03a7c15ca146d2b6de714ed. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZEZZ2001189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4c92d9fda53c8b38bd8cc902d6a049c026c18e03eb7e7e1cbd19805d066ebd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2077163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfc6598dfd92389f164af4d651f3dba9ecf6fba4d50426ba0c946954ce4ff5f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM82012927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15bff23d69944a36d5b4fba89cdb6122f78c9ce33f1f0861b85e43082554242. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62026111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d56d70339692ec2a9b9833dd59da344489fbac9dc85e3f007f5cab6d914bfb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMEU32103351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0751e59f02d4c19c727f5c794b75bb1a303de54bd33eb447077345509732ec27. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM91981241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f667b218bcc4587f2303371d3f49c1cc1aba343de72c77f341f357b4a6880e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1861597.
La Pasta (with Alexander Abreu & Havana De Primera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81d2c279ac49ee6c8a9ebe287801512ccc404ee0cbb610f3d4d97bd14659f08. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITF251700087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62eeb8c4001daa80829059422538b340996bc7cfb8a8cc8711758ecb3a949dfd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81779254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65255742447badb18160b583e5dd884c1a615c892c49b94bbd2212bb45970975. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA0B1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf069491c0be32684683eaea669b4af7d3f40a12797b69ac209677dd9d94baf6f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41543998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad68dd2609e051bbce37dee031fec9b9072836b5c5a18d2a45722c55bc64d4b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMEU31503282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba836eead11ca658953f50c8fbc6328af86a4872f53026212639cfaa16f4ea34. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITV081400781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df49e85dec4e1cea3903dcfccbd8ba97a98748881d0ef47376f7aa742146a2e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21331751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029bb64b6b99cbf3dd56a53190777c3e061d46732d0fa6f61df8845b8ff0cf98. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSD12400312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82c32cf2d5e9fb95e3be305b8559fee93e8afda3c7c2546783443780ed466f5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTCE1067998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bc8f8d65d1a9b3c87109742003064b3dc96663a9085d412b62ccfe29652c1b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITAC21300001.
Homenaje a la Musica Cubana (feat. Alexander Abreu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac91b17bb44feeb0315bbdae337aa4c5694c22574e736e6189be07a2b5369feb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1707331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fa71caf58746496ecc8f5c84e4c5ae4a7934a82ce1accb9c5343fb8f3a32ad. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G1743146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2c0c74c9f360175250a66679609949fe04a4fb07b277ce97d2e46352e54bdb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA0R2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2e4eca7d5ab04495a21f6c04d317332015a2ecffb5f0d896cc2c7cec84a078. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2228634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2467bbab7f541dcce0640d8531f4e879e7bfa1451973c5c5d57cdf342b743ef0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA020215943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022ac32d7638cd6bdee57602f4615d1bf01235c154b18958a282999047b2c2b5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA021712129.
VanVanero Siempre Sere (Encuentro Y Partida)
Salsa 2015 - 20 Original Salsa Hits! (Salsa Romantica y para Bailar: Puertorriqueña, Cubana, Dominicana, Colombiana, Venezolana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0a2ee9751ef6840f83820b81d5655f1c13b7788810ffcba0f52e57382872bb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITF251400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82275f791f2835a6f28725b7ba1e26beaf4df5f5200698bb4e772c5fedc7b8e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU911800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7821442f6aee06d05b68dc8619abffcace163e21503eb64e882c0807fe64139. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011859256.
7 Days in Havana: Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57001984360ed21ba525b2c978c2ef3d996bfff3dbe4093bed51206b1444eaf. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB2H71200072.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch