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 0x2cbd0e253eb4f5a3b0662e1c6fbb674019dd308e03cbc12d5c6eac13cf4588ba. 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/5958e2b1-5e50-4b0e-9ff3-9c0df6bd1929.json and https://artists.proofprofile.net/proofs/artist/5958e2b1-5e50-4b0e-9ff3-9c0df6bd1929.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 0xd5e0b304657ce8b4085512ef5a6a416da501224c827be9485fd91d4231ee1bd7. 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/UKDBM1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e1e223c89d1d071e47dc1278a238260ac51e7a1e46470965a61cdb89454c8c. 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/UKDBM2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52f38a609bd758b0ddc3d088f5589dcf4e9f8222671968f35a83205e98b8f88. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:21Z), 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/UKDBM2000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df10c9e9cf67b4e20c273e12238d0fed0104043d2ac84a57d3ec2612c85c583. 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/UKDBM2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1103d64d5162446f82242c6f201b9f5a1d0b0cf29db4463e0c53a4f353f1413d. 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/UKDBM2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ca9bdd6db311db5dba5cf6925b5ab885e065a5411ab08d3526298ec0d085e6. 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/UKDBM2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebdd70f7b23a0d5d3826840dd4c6d5085baa20fa2abe58a26b1fa735fe39464. 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/UKDBM2100030.
Within Without (Emanative's Magical Optimistical Mix)
Within Without - Emanative's Magical Optimistical Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99541249281935c32ef83367d7e3a31b9c840f74346465bd93cce408bd5203a. 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/UKDBM2100053.
No Be Today (Tom Excell & Nick Richards Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2b906728462d36a8b8434bc2abe70dd58c7e49db092a6169a6c85cd8e0875f. 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/UKDBM2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f1e0ff69c9dda00e8e9bb69d6205375e453793a9af4ffea9543888abbf87d0. 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/UKDBM2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e8581a0a545308b40f62660e4cd42eb161ad72b5b0d1075ef6f986faafffa7. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/UKDBM2400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7db63b39550c8e7f148dedcf2ffa66f056523ecfd5c170c49dd16763f70eaf4. 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/UKDBM2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f91ff2b8896a0fbc4359823d075d7eacb8c9dded195828c020da4e5d56219e. 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/UKDBM2400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62912db9b88244727c997167701e3eaa932b879955747983f7972873169d0479. 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/UKDBM2100020.