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 0x25d34722cc30d39d00d2e1e3c5fbcdabc5e3b6e3a5cf12e339ea2c3a7d578f4c. 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/9c0bacb3-f93d-4e74-9ad8-af1ee9773a62.json and https://artists.proofprofile.net/proofs/artist/9c0bacb3-f93d-4e74-9ad8-af1ee9773a62.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 0x925f8cec67a9d6fa890b51a3200710bd5401a46adb6d5ed95d246b000ea78a54. 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/AR8FJ2300523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3010c6bef18609fc559deaaf12c9b3fee51326bef08edb7ebdb2d77aba23f43b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/AR8FJ2300531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3003d71a9e8c52c924a8dccfd812463178e735f36ed561dd0d582268f699686f. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/AR8FJ2400108.
Una Que Hacen Todos (EP1) [En Vivo Sala del Rey]
Luna / Basurita En El Ojo / Culpable - En Vivo Sala del Rey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece1c8e225c14cbe4a455ef007471defcfdef282488fcbc803b4c8f254a012de. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/AREBO2400076.
Por El Contrario / Fragil / Olvidarte De Mi Jamás Podrás - En Vivo Sala del Rey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6714e671add6cd85ad06f0644e0cafeed7000dedeb4bde63e3e7a965384437. 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/AREBO2400077.
No Puedo Fingirlo / Perdonarte ¿Para Qué? / Tu Foto - En Vivo Sala del Rey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7dede499fe8d78c01a2aad3b47d5cd4147e421edf5f326d51bf862fe9c8ad2. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AREBO2400078.
Mil Preguntas / Si Esta Casa Hablara / Bésame Bonito - En Vivo Sala del Rey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eea37248d252b9dd115e0f65ce410e52488722efb52e91f22600f68a91c74b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:13Z), 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/AREBO2400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c425b805afa999900de1996f85b2c2fea3deb0442435634764a1e60e0de89d5. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:47Z), 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/AREBO2400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a5de925f9337ed5290971e304df9add4ef7dc63c8879d4b73427e53e0f2a6e. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/AREBO2400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb65eb1084c1edcf6fb8950f6eb0fdf64f2f4c96f76112948b3cd83b023b889e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:27:29Z), 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/AREBO2500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3db45b6ff9285b950c9bbaae64ee8d8200347b4403d0f0e24d8b4dba0ce4456. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/AREBO2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc1e0aaa36c46c8fd19bb07c37959e9ab9fe8f126857bdb46b8da6bd8253fd0. 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/AREBO2500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bbe6e1b22ca09a0277558d5d79e46a118f1c203f018ce1e978565f65e65259. 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/AREBO2500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc355ed2fb2784281cf4ed36f0fae2e041227c128be872531d5d605ad80fddd6c. 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/AREBO2500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36740a407c89ae941b79343b23733fbdfecf8afca4edf074a325ae05595ecdd8. 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/AR5TV2300008.