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 0x62727d538cd31f869fd7fbfbae695d16c05a6ffc9ff9070d3116ef87be575f3c. 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/3678ca68-337f-4d65-991d-ca9ee65d77cb.json and https://artists.proofprofile.net/proofs/artist/3678ca68-337f-4d65-991d-ca9ee65d77cb.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 0xb5f9a12662c02e2d816a1077c9c3addd69a3dccf6b956261732dac7d1f3867ff. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES71G1915911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2356262406079bcaca27ffc221bc7665d0b7f0ff591ffe48a176c46410d64b74. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/ES71G1915913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103ba7de7e1c625a61a5998cae56313147e491941f34baf760f1dd86567fa510. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ES71G1915910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85b57ead7b76631cc3a97ad0a7a18c81eac0b7e26bd1e1be74eebf91f29c957. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ES71G1915918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3ee655be1c719c1207419593424cdfd561d48eb9da41b13cd6ea801387cd9d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES71G1915919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb5e645133d98c67bba8364c4cc3572c1dc5d739e2d469d6e7d43170599588c. 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/ES71G1922705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8eea3a82cf7c15e08df62aaabc58e21e330db65433fdaa3e2347ceddbfb4a8. 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/ES71G1922706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f858ef4fd28ae1f24615094f932f65acd19a7f6dcb06e6eb65968023128f884. 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/ES71G1922708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1775d4def0d4a5086b2abda766b73f7223f94ec86690d8b0fbeb952d51ec7836. 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/ES71G1922707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b29a1842b44bc958a45d17d0f217f95cab6d32605ee8029e465e73c512534f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/ARHXW2102179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2afcb6cbb2d4883be0f807b59bce72d3b4e2a28aad9778617977694fe79603. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/ARHXW2104003.
En la Orilla de Mi Cama / Adicto a Tu Piel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e226c5006f5caf890745cfef66243dc2d191eb48566945eb7508bfa0fde65f4. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ARHXW2105561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a518dea555a3bbd68361e0f7509010d36e5ca6a3559c8e783f14e1b160fbf52. 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/ARHXW2204164.
Un recuerdo me hace llorar / Como has hecho / Todo de repente / En mi cuarto vacio / Se fueron los amigos / Cantando a la gilada
Tormenta de arena / Engañadora / Mala / El Superman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc44cf7bf94bf9b02f9fe66bcfcf2d52ae6d4a3b9d4ed8156083aaaba4e3db1. 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/ARHXW2303382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180c2583be7c53010cd0c0764ebf4309a06ef7655c1896fc57fdc674cb600c18. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ARHYZ2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf517dd81c67f15363ddc09988f3d6f499570ca52f00144e9a9d19e3cfcdc8deb. 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/ARHXW2302546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b40b0757e2f8959d72027543104139a2103e278048204adf262c6710d6589aa. 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/ARHXW2300099.