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 0xda2d12ae742892e8303a515426bfd07c82cf703dbbf4b19eb7205b2426fed1d6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d401dafe-6b66-4fcf-b06d-e58e57dbfe9a.json and https://artists.proofprofile.net/proofs/artist/d401dafe-6b66-4fcf-b06d-e58e57dbfe9a.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 0x94e4f77fb100b9a56b54defa123c7b03fb74e2fbbfd002e40991e466493ff49e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ITS781702220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859445f1122a359d429cf574f7f69f2483a926c34fa24d4a0037fe126b6799fd. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T05:03:09Z), 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/ITS781901271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81c1b0024c4a2f3cde61fb5de5ce9d1dcfcd340fe548864442bc61c35205a47. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITS782400175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11068cc6710a56040b7522a8b6ca286584539e069199b2b9d7fa09c84770d0f0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ITS782400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6b5c98b69a95864ac3639e3f9fc55eac3a3f6cdc4047c53eacb4c800ff19f0. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ITS782300853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe905e7a95df9f04b0ed5c73825c3aa42238b9ca78febd47c906b05ad20ef99b4. 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/ITS782400591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada9eb179a68b6816aed3f01e7f715f77bed91dba8a4a7172d540bc00fcaec97. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITS782400393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9340e9cc992c4d8b588b77518dc520d17a0c6eb77c2691a93544cfab05a8178c. 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/ITS782400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737ae4fddadc58571b3266cc716a084ea5c80274fedcc0a1d347ca6b8024e249. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITS782400829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f79c564731a06eb826fed544ebfc15fac61a8c14ddf176681122f410c862aa9. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ITS782400833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb777862a25ce6a866ce4fd292d967cf549483e9d94005dd704d5bff8487874b3. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ITS782401326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20707a767ebe195abb910f47ccde356e99ad5b1eab4b48f3cdbc9a8f71429b3b. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/ITS782401338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cc5a2830aa01b3f886e7820962c3c09ce0647aabd41780f25dfe262a5364f2. 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/ITS782401301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ac38c6d7bc949cfcfc897317ba37b44437beb5c0154618892554a4e1d06eef. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ITS782401345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fb8435f767faec11fb15fcf8eb4f715e079f79dba73b653b80474f23ac40fd. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/ITS782401302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedb8589ba862a1bb56e31632f66c1c0f3f86df52d7ecc66e44de06b042d55c3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ITS782402090.
Musica Relajante para Mascotas : Sueno Tranquilo para Perros y Gatos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e4f77fb100b9a56b54defa123c7b03fb74e2fbbfd002e40991e466493ff49e. 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/ITS781702220.