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 0xbed26980397e42bae7401fa0eb8c1678cb79b85153709db5d86374ab36a99474. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30106686-f06f-468c-ba55-02a382ff9fc7.json and https://artists.proofprofile.net/proofs/artist/30106686-f06f-468c-ba55-02a382ff9fc7.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 0xb7bd5248829bf87ea24a8b02930def4748f07ccb5f8710458456e85afb93e1ce. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UYS059700192.
Los Pegaditos: Nº5 / Para Todos / Los Mareados / Maria del Carmen / Y Te Parece Todavía / Rondando Tu Esquina / Esa Mujer / De Igual a Igual / Perdí Su Amor / Juana / Tumbale / Su Su Su Subir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc3128dc8a9902f1a8c409ffe6548070f396321bdd475f9867d1478eff5648e. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/UYS059700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf700bcdb857c6b7b2e8d3ee66326093ff666cbd7ae2bc08afcaa8e0b51c23783. 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/UYS059900434.
La Banda Bolichera (La Que Más Hace Bailar Vol.2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff0bf94686dbd27f99820f1ee8e357cd65ce1ccf8c3e480fe4a721b46b39cb4. 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/UYS059600197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7e3d0cac48d6dd003eca3d1c16f0a5d0aa1944badf4999e52cae7bf564a785. 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/UYS059600201.
Los Pegaditos de Super Grupo Antillano Nº1: Colé Colé / Niégalo / Enamorada / La Pollera Amarilla / Oye Mi Canto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e17f88e56be4bedaca2a699b064a7627e450b76d749e6f647dd833d9f9a290. 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/UYS051700766.