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 0x027e1f5b03104bc1c8389eabfc3ec1030ea3c51d3fade1b902aa0863b86ca015. 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/e9186229-7472-4c41-95b1-edea6825b59d.json and https://artists.proofprofile.net/proofs/artist/e9186229-7472-4c41-95b1-edea6825b59d.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 0x39763f8877e310885c8f98c43ca6de813076db0570a9529ab5a2b3080071b3e7. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:28:34Z), 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/ARF470900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c41e9293c97a54894402837a648c22695872d2054287b53c8db54bac26d7b3a. 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/ARA901500456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1726701cb372cde5702f5f5ae5bb6b9bb0dac33dd4262534aa12d95c3e76a03. 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/GBMJG1512700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2032ccfb41b3e108c81eb75428ff2c23e1bc0b3d22564643c5d1800b45203440. 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/ES71G2411146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfcf839fdfcdf68358ca726e16f5d582865defcee623bf51af6c496b5c7d87e. 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/ARF471200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2204f7ff1c6e758516be285818628ebafe06289436b369026953924962607901. 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/ARD191900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ca8a4193808eed42f71c73b97bc74e06092a09c70a2bd558b69943c02b4c80. 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/TCAGY2374544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1b2ff4d427a22f92d0ef4b9e95868ae5263b0c2daf9641de36b6330c5dda34. 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/TCAGC2207086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803112bc75eb533592795f7fc54011a00580010e081342bd8f0e985eb4aa6474. 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/ARHR91600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d368b5f367b36bae4c8ee8461420cd38409da2a11cdc9b550ec7972843736c. 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/ARF472400248.
Canciones Sobre una Casa, Cuatro Amigos y un Perro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca5671352017b99bcc5a708e6da14d1d3fc4585ce7dd3fe88ce0bc6ad6b11fc. 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/ARZ882100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c65a1eb0037d150724729b59f6bbcdb67d65558e4b67fdb5f52b10c99ec20dd. 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/AR6B52100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c65a1eb0037d150724729b59f6bbcdb67d65558e4b67fdb5f52b10c99ec20dd. 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/AR6B52100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7f1a91965fde874f8f201bb61d6d7e4938b62013b036646aa3b9642478d4e8. 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/ARA822400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78036a09f66dbc62e53911f122f364a58a69bc23ef196dc719948c0ef8a0b1ec. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ARRDJ1700015.
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
Cada Parte de Mi Piel (feat. Jorge Serrano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fdda6e81307bd71baa1f20e7239c379dcba51f2ad4958016cda4040dbf5a39. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USDY41525385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282046d649c0d039d025ba2f880680a5a546c7448456dd0f44558304a590d859. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ARXWE2100089.