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 0xf28b3bc57ac8400edf955e8f1246495968e62606f3850ad0b8054210183ef58a. 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/ecae26fe-a9e6-4606-80d1-111eed4a8f4e.json and https://artists.proofprofile.net/proofs/artist/ecae26fe-a9e6-4606-80d1-111eed4a8f4e.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 0x8e6d067f664667ec4a1fb376cb17cafa52cfd8ed3a83546c741d29c36ecb33aa. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCABP1338890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2e4e8faf4e726d78b9c67f7590df5704d7d8a81a33b1629b2f67e080a8f72d. 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/COSO11400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70970c99539335e302d908e5ec5bc39f9517e27aaf0d0edd0a4498ce61e82ed0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/COSO11400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5167d8da493b9142fded0863edb5b0bef9623a67058f306b65d539aa174012. 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/TCACJ1502368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd08e59fffbd87aa68b9c1593fbd2bc1121f0af2b2e62527468970c9edc08d91. 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/TCACQ1614324.
Símplemente Amigos (EP) (feat. Fanny Lu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc75ded99f535dea1991c0dbe20723221a5b8f06e8348c74dde9636bf161f58. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/IDA041983158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5330a688cc18612e2c3db63c877bb22ea4815c1ceeddf141eaaefe0d623826. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IDA041983159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08bb5d2aa2032dc1ff37805a0c8281195d0f4c63fc8d342e8d9354cbc521fbd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:52Z), 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/IDA041983160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fe43a722925abbb30855d370063a950e39d69a216ff1870c3e113f468c1e4d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IDA041983161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a22bfa232e72ed4df7b3348b94073d20c41c57141e8ef5a367ce08803db4c17. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/IDA041983162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0921ccfa94f1f26e80833b4826e416ba5d71769412377934085a81a3be5fd5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDA041983163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98831b9b650666453ddd1afd333fc0c2f08217564e17b97fe0412e92ebf68773. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAFL2163583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34437fafb10f3759b668a18013699714dca4614558d75fd2ea59143143834d60. 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/TCAHB2374491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ddd3bb1cba7163dc3e4effce417b0682e1f88d93daf2ea54c42e4c1444ea9. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/TCAIR2454063.
Déepalma Eivissa (Compiled by Yves Murasca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd615e3d4f06557d9dbeee9f92661d9f5ed50e6eb85725782f487650a97fa3a08. 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/DEDL81203016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bedf2bd42cf5e872718397b547b1afa05438297d7582e060d2889e83d7da60. 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/GBK6Y1304302.