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 0xaa5cc2fb3f9fccca236512a9d4faa6c87ff8d10eea6911df14470aa322e6a70d. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd0c62a2-fc05-4c31-a0a0-00b4ad0ed0a1.json and https://artists.proofprofile.net/proofs/artist/bd0c62a2-fc05-4c31-a0a0-00b4ad0ed0a1.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 0x8a855b52fa33fd4cc09d13a510c7a6b4c78f9123ea1999c3e122f42c4981a05a. 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/USCSG0591601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d8e884e7c3a291d8d14c55249fc4bc00daf4179feb852a67003059f299fca5. 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/USCSG0591602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d007092ad51e3942106b145f939494a31081541f5c68d1e84c00a2e6963e987. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USCSG0591603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe262fe75ac292208d8eb210d04677b1d0b0b4edb185fe3358e796b08fcc1c511. 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/USCSG0591604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0916aefd6712b30f98722873f7b7767d41c2f18ff58e6f88a5eb149fff4195d. 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/USCSG0591606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6cb1a076db56ab2d597d8decc8f1f00ad8291ca1d7076a51d75392f1caf59d. 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/USCSG0591608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef339bcdc0cd1a97bbc1978b3e4b008d1c5114166e7bb6f896a6f1d654e710ed. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USCSG0591610.
No Importa, Sigo Cantando! (feat. Grupo Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a55a21cfcf59def85966a50e9589a820007e13c405b7d618c27fb57180ea67f. 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/USLGD0910277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303b384142d1fea3e5d095f07c42dbbb7e15337c193bf7b05aab9757bf634c63. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLGD0910280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f6a199f1f12eba4fb853a6dfd86cb532cea814265b98a021d436fa1c98d457. 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/USLGD0910281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f878d95a9669154998a9f0f5ff1bbca7801eed4c15e80335937e5f31cdad208. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/USLGD0910276.
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 0x0fe0857eab5b1a010c4b89b7aff465bb92020fbb124a81d3c7004c35a9d60cbf. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/USLGD0910278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c5cc984262f1d690a113d3f5192d88bdab4d246379f8d0945828a32de759e2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USLGD0910279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422dd84c7323b24ee99ba8a520b1fee25eb0ed31a394849c4db862c7dfd99366. 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/ARA821201283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db006d1e4e088669424bfdc6757b0b820b17e68943a00b84a3dd70868020ec2. 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/ARA821201286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b3e34480b3af4392d1a0705255dcc31a715cd60c36113abce98d325ba2403c. 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/ARA821201287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea36f85cf48865796f18683ce38cd07f2f1dfb2c72a81183437ede0e990c548a. 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/ARA821201288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0248cc8c3e7ea83e8525a160a4068ff988e927d0c0033d4e752e4b681dea90. 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/ARA821201290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3582a0743e2f1342ff4ba9e9a64e135ce1bd710d25ef582d1e2f5a187e86849. 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/ARA821201291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4642f00ec001b04921ae48747c5c78067fd1f99002b61d1d4a5ec7b29500f64. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARA821201292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe68a60e1f78f1702349b2c69c88b7a7601622d119d31ab498501fd1f612d606. 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/ARA821201299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e35c071c2bacab038208c791e61d865413c40d914d4b9a89dc37e800309b738. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARA821201300.
Sar All Stars Interpretan a Rafael Hernandez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd79815cd9770ac1ab230b04e7edfd65121d18d1a0997996fa6812d9009ae53. 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/USLGD0810091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68537e713f68baa02b7507bc86eb7b49a4e9fa076d500a877f672dc037a376b1. 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/USLGD0810092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad488734820e5ad409b22dceff1864d54c9905133806aa771ee3304155e575e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLGD0810093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c384929e0730f09213795f184653e274fd50034c239a0b26235ae12fd42c61. 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/USLGD0810094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55be26dffd46deab034765487e602341f882b94176aecaf2ca44be0b4e887228. 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/USLGD0810095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3154bd51801146f78a6d1d4ba4df8f4b02bb08ba661dbe3153147f560f49e961. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USLGD0810096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abe4daaa84f4db17b6b9df8451d76985f80e481c53ae17c37bced98d2dbea9a. 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/USLGD0910126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88db86afed679aad36f527b1054e6f48c7d724f0ad67c7b1665bb0bb824db56. 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/USLGD0910134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207652f02887a9f9af101470eec1b000b53d0afb483da980ad5fab5d0db0f214. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USLGD0910125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508427df7e4414277bbc8ca479ba9253cee8df0968e0380b0a8284fcf8732f6d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ22K1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbb8353c59fd440c16ef173a897a8bc653cd83e674661b89daaca1efd370d0a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZ22K1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3363bb0280dc3ae56a922285380eaa5cfa74ff6006e58f01575c22c0cbbad9f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZ22K1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55551444da3690366428b5b3e37a44c536b88290caab8a87109a4aea5e81ea58. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMBZ92081848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a653f0664053b135d74c155acab55aa287bf7476cf742dc2f9c12b6da0f07f3. 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/QMBZ92081851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b2cae23e71376064d2471dee516b299777ab977b86e6949ac812dac1708a2c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMBZ92081861.
North By Northeast (feat. Wilson Chembo Corniel)