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 0xf6391d8922788f2665675904f2ea4301b03e780c7c16dc56ec982059ebabca93. 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/a9e8a4c1-be9d-4b36-82cf-51163e3611d0.json and https://artists.proofprofile.net/proofs/artist/a9e8a4c1-be9d-4b36-82cf-51163e3611d0.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 0x9b757f48662d7ddda9276842c3fa757ee49819e24f7a8ec88e556d4e6c33a0d7. 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/USCG60320178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79507e80b78b979b4b1e86625cd93a36d02b6dc18f29e63f34acb9748a86c5b3. 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/USCG60320180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec937bf3334da2ee255ef0331e9eb17a0df777e566abcefd75a993c1eb5af09. 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/USCG60320182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b49042bac07a8d05a8b8c6c345d66b9bb1e97ba54c29be0c01089c380a367e4. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/USCG60320183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc46cc82aac99880cc6842c71157749ea92bdec089629effc24af35c2ad082b. 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/USCG60320185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51328683b6ede32e07e59d025b71860b93957c423c92f30b972da6b19e5b9234. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGJ1202646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b5d04eba64f29087e0b39eeba8cbc81b27ad9f063d6ff7ec2f63bdc228c531. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USCGJ1202649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec839e4136363d7fc22ccb20180886c6b3472774bb236ea63c0868d96b9fe87. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USCGJ1202650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b13ccb4a4bc9d36920ad967e9ddc2b44b8e56330342130c0e055dd147c32f4. 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/USCGJ1202651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0288436f74cc7b0588ec39be8cfc2d6546f0c9d2ebde624e763c06833c0d06. 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/USCGJ1202652.
Aliento De Vida Pistas (Pistas Originales)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe038599d52e0ee41ce9715615c5c0f4a3ac145b1dc8db52c0459430f48e140ba. 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/USX9P1333296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297187c85001c070b9e72473438b0f4c67e7964f0568b7505abcfc3e9b729338. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USX9P1333298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a01506d1883514161b5e5c6b3a196b84b5012cb4a6f6fd99cda07e2a1d1adb9. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USX9P1333299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07943a1ada86833aa30624163d773892a5e7be691186788b8fbbcc071a08c9e0. 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/USX9P1333302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451654e1147f2db784d3bfd2f50a139a10aaac7c757f1b1256204dbbedec44e6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USX9P1333303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f215310047b6c6f36aa748fca3ec027afe043d5daf6ccf3f4a708dff1032a4b. 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/USX9P1333304.
Aliento de Adoración (Pistas Originales)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47454401c887e72af0ad0dec49c55f638e4483e05e21c4e7d29fa7ff579b26a5. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USCGJ1585604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ff1957deae08e49ac30b20b517612bf6e88d49141726c8b5995b39f9bd354. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGJ1585606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b4df899ca94edee8a5aa6e32d469179247b9072faa8a087897babf2d5c1255. 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/USCGJ1585614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21089ca2d4a981513129c6c19aea8585e64c854b4c25fb07bfd10ea7e537785. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZ2J21507130.