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 0x7a41b16d6cc9149db5f9ff2d7f8f85e541150342845553ac611059b157231ce7. 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/7281a0cc-c454-4a98-9863-65a14285e206.json and https://artists.proofprofile.net/proofs/artist/7281a0cc-c454-4a98-9863-65a14285e206.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 0x93593e08a58ab475c9870d152d55528a53cab206a4946a86820828bda3ff2a40. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAFU2120258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1915e07328bf55f6c2c9bc3290f4e85735a3eaededb7af47f5a588454d3730dc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFU2120265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc4730ed2e3d533c55c8b1aa437bbf01cda1d5ddb4a69a8e5de8a7d95ea0bdb. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USX9P1169229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a397f46e44302764271e2a03d421977929d7b4bb0c41c30defb9c9cda65785. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:29:06Z), 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/USX9P1169231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cd729484ff70e8ef33694105817d9683d3768f44b51900496e84a22d7e4e74. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USX9P1169233.
When People Don't Know Your Business (Interlude)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc27be0a7806913ea0ea40e7b2c409054b6297fcb60b1e1f63b7bb0ce2e266. 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/QM7282484336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6bae4d50fdb95a12bf4ea69916d831eebae26aa31310b733dd96f9d3913fb3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM7282484320.
Too Street For The Church & Too Church For The Street
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f587b4d160383b2d2f6aaf36951e8654796bd4d174136862359c9680d82958. 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/QM7282484319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6bae4d50fdb95a12bf4ea69916d831eebae26aa31310b733dd96f9d3913fb3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM7282484320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e595502eb99e4bee86ce353f98b9bc0d708c1a0543e6a2614be3f79c7d5cb3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM7282484333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401d19565f90932d9aa6196b6653fbc4284a475ab653d39f0ea69ab8ec1e8cd2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM7282484322.
Broken Family Ties (feat. Boosie Badazz) - remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07f67f2fd2f32f21fbead1be6b177073892cd48c13686b7907f72dbaa180b97. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QM7282484323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32038b7c78b907066d1a115f3947000e7fb1665f2611d37f836b37eaba909137. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QM7282484334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348397ee738b8046977db782464e4ae967793b105e79348c80a8dd6df5190651. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QM7282484335.
When People Don't Know Your Business - extended version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd20b7518a348627880923bae3974ea5a3a15e0ae135d142bfe82a0c8b161d4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM7282484324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d951cfc1fb9bdca1012358a27d5492ffe92bf82e0981eca0c065022a3b65b9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM7282484325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac65611e8b75608b937a68204e3343e701499752ffa12f3fbf693cdd3f9c1283. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QM7282484326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec20c50db6e891aed9d98c9afacb40dc8f30c84250e44edd1531495e6fa49542. 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/QM7282484337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e15c41636e4615af39178b7add1b272c1243718625c6d431feb3f0a268ef28f. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QM7282484327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc08fa53c3d60050eab87380820f208ca6705173e96f8224ec8270be6dd9995. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM7282484338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc490a7a437f9a641b1b986c223314d21b11e671e329d418463b8308568374e39. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM7282484328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7db56d2d5b38657f6f568632d7b92ff4682e2dedb3f446aeae45082f861b20f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM7282484339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2285fde09354dde837ebb330f293c7bb5552f411e498e307263746e9c3d47b. 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/QM7282484340.