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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b1b837579a58887fa34a0766d79b1b1b4197bbf48650fc5899d5147468489. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/783f96cf-9f81-4e1e-8238-00b6f77e71df.json and https://artists.proofprofile.net/proofs/artist/783f96cf-9f81-4e1e-8238-00b6f77e71df.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602b478069a19fe808b51277eabdcd72539b918515ce3d46b2eb73e53af4161b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/TCAES2031652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8050bff08918e093b3ca282d6caa0ba2ac38a8bbe0d6d40a16c1097e25aa9e84. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCAES2031745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e63cd7cc63e26ac2d7e43db22a41e457931e6ae1f2b62ce734217922c6c9ba. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAES2031761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7dd4eba97d1ec3bd61a6bf7a7d5f8f988a1a9756a287bc9abff43a601fccf3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAES2031797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b6c1f2b8b9a55d19021f1609b786a572ea0a70519db7a5478b6539445b4dfc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAES2031801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b83e081952ec7527bf802282941329be2edf40318009c2d2e75cab6e2993b56. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAES2031808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abf610172870fe673d4fd7424d868fd80b4082b7123df6bf363f9cc67a3c3a7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAFA2026160.
Alguien Te Está Hablando Mál De Mí (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fde6de8a5aaa358026387320663d71d9c77945bdb5f0df05f0950efe78388a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFA2026161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f612a0e0d52e2d050f291bb5532e528a3726245652c5f17aa5eb0598d93ec0f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAFA2026170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d36ed9804ec7adc67d84e098d26f8502bc8152e3c198ff4ecb09c59274a890c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAFA2026176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5df0fd5d9e3158863668f9015ebee11d3c493fa076f681e9630e85e12825529. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCAFA2026181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab26591e0ffabb30034e8c5a353844f719a16dbd79423c0bff66e6927586e06. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAFA2026186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd939832a22f150e3f7b0ca7bb38556ee90bc291e33912df18c53cdf630b44b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFE2068760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ed9582e3654fa6e2606ebba83e2783286fe4d7a015d2365480166d4348338a. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCAFE2068805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289a85a02c115210ab2776e0ed1181909d816380dec48fc380ba34f3134d992f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAFE2068811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba6c300af208b1f0d00d1db9c7ed2ec1356d802ef10c47bfd2b2800622b934b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAFE2068766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127d9fffd5e2e4e8c27a911f863cee7913dbb0729ef01938c5457d0ea5430322. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAFE2068685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44dedeb721b021bdbbb9af61dc3bada7ea3a1206aa80b9e6847271789805c24. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USUM70766195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8331214f53158e2dce1a20446786b106515a6cf69fd7fd0a7cd62c75cad5a2de. 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/TCAJA2443239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4233ee1d51ae228ecad40f4230ee98e6b1d614b398a9265797daba576d3a0796. 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/QM4TX2517455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba4123802e28c91c9e28141e9952f0c22363eaaae47161b502e9b925b93e484. 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/USUL10200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096aea94a02b94c377300838bcbfe12f0667057c3b1bf6ad72d97e20383eb95. 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/USUL10200361.
R.M.M. Ritmo Mundo Musical - Larga Duración
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb273ae33297b3a10bd2abff562e76d4088ccdb480e9170225d3682becb5110c. 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/USUL10200358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096aea94a02b94c377300838bcbfe12f0667057c3b1bf6ad72d97e20383eb95. 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/USUL10200361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5177355bbace71c58e6a1e68b46a7e29c7df0fbd8bc944e9c49e45716a3a88. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUM70766182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2eff265a822f6d94e0ab048860c7d36ef5caa294352bce1747a8b3965d39ef3. 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/USUL10200566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44dedeb721b021bdbbb9af61dc3bada7ea3a1206aa80b9e6847271789805c24. 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/USUM70766195.