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 0xb85c87deb6e5875a305072baf491c39a465105afff486770de82711ff768d644. 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/23a94db1-f072-475b-9758-56c02f7cb9a8.json and https://artists.proofprofile.net/proofs/artist/23a94db1-f072-475b-9758-56c02f7cb9a8.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 0xb2898ddcb2fcda47543a4681ff5b4b56a0b242108030cc78c4c15cbe15f89758. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UYS050500189.
Enganchados de Daniel: Lola la Coquetera / El Funeral / El Zumbador / King Kong / La Cama de Toña
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02e2067e7bc309f33dc8efe7d6f558cf9fc0dbaaa023dc646964f2f9dd72d88. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UYS050500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4263e7191fbfd05327826ea40682632c414352c3423f05280c05a187f0af6a4b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UYS050500194.
Enganchados (Segunda Parte) : Tengo / Sobre las Olas / Pueblo Pachanguero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2abb046e33cb98c3b973431a04b6e0de3e31a433c62d5f598123626baa57b32. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UYS050700361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb85c308380f09a1f70f8e512ecc7669b51374cb9516b3e7f3f31dc692443d96. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/UYS050700374.
Enganchados: Talento de Tv / Se Escapó un León / Ta´ Buena Ya / Al Pueblo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d18a951c22ffbd63b5b92c3f5ef9a249d82b438bacdd46eeb0cc792fd0c14c1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UYS050700375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617726f7bfe144f9569529f0cc89ffe0e371f7d22a68c1365434419b15d59016. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UYS050700379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fd0113fdfc8fe177d88bd5a30022136a0c3017aa76bd90a53be9cbd1b31838. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/UYS050800250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edcb235a0f054ba83f4878294b4bd80377e0b0e53bd8806c85c8f5b88481dc6. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/UYS050800257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3508d9576af6bf944eb3b101a65063ed1ff177a18ca48ca995c448ee8e24250a. 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/UYS051400019.