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 0x35a4aab6eca491667c8d5ce9fcf3c346848655e69440f36a44638afb4a795ade. 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/13ec9ee9-54c5-48d3-af33-aa40745e0e34.json and https://artists.proofprofile.net/proofs/artist/13ec9ee9-54c5-48d3-af33-aa40745e0e34.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 0x456d025d80efa9deb39f1515222d6fd5834942c06a5e7449b23a3c5c7182b1b5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USUM50210719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48032a3f1b3c4b3de70b6b44031fd0757437f3bb265636f2a1a654f5659a6a15. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USUM50210725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590a7703c763dd13b266df4a7f074848c25ff4da4403bec593ae7d9e518c408a. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/USUM50210722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c2f60c344cd1f9e8a6a83774da7c38b6c5bcc809725eed057e177d9dc84658. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USUM50210727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334295a443a1d466f1693575cd2160d831676c3614ca49534ef48891c44b1626. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USUM50411061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01493025ab289c2a6bae3005a937cbbbd67ed627d88e3cf15a15fc161f9af8a. 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/TCAFB2063742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c26d64e5242bd34fd63ecf1384222358eade2c7ed953f6eaa9bbb928932fb8e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAFB2063745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d73ef91f7aabb1720e971a1ed2a38db77103678863c4e45db51433772c03333. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAFB2063748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36b8eb83a19d92e1db3aa2e55af6ad470919937e1079a7a1cb2d49573a56573. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:30:57Z), 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/TCAFB2063754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa787af3e6f446dad53f2f4353f15a077972fdbe0370ff633412510f3cd862def. 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/TCAFB2063769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd93511348c9fd193678523b513b08d84e8c9ca1c5d8d78535a9e981ebad60b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZN882072164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ddf63ecec2017a835efc15a0059bd255a5188b2862279ab11cc24c5e28fe8d. 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/QZN882072167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec111ef79af69dece22812d5d1974ac142f3f7b35b7d700aa8586351a9b9df54. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:59:38Z), 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/QZN882072166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf393644d98711aa7b7dddbf349fdb833ca88ead14042395abdbbfdacaa348b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFB2063768.
Latino 43 - Salsa Bachata Merengue Reggaeton (Latinoamericando 2011)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab284a628de19a0c9be443fc36da7d9bc0825625d40d789dc0d88472f834c646. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITF251100032.