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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2768d154e5408d810e754dd14111ec82670a65eb410a4679b9029d1cf1221e5c. 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/8bb9b430-c00a-4883-b120-59a1c6c2d7a4.json and https://artists.proofprofile.net/proofs/artist/8bb9b430-c00a-4883-b120-59a1c6c2d7a4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1157e5c90e2700465ef1f368fd9610b3565536ffb86906ef2a6d0940f15de03b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBSMU7427974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f84a92bd2afb88656601af23180ee53164528237a1013f5275f452bda44f98. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBSMU7427975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6449d1039d9355a1a22f93ac5c95bd908d9634e3c94e611d8faf180bfd7183b1. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBSMU7427977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646178ab7ab94a2af70e4f905bee97c69db3beff02ee4c1afd791c3a3e4685b9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBSMU7427976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8995660b734ced53f91f7965846ed9873b07805d46ab18dd3e20574c208cd1e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBSMU7427979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13c14a5e23d436ca676192081e35ec93df8b11ff25858d384f8dae0220da3a4. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SEYOK1635364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aabfd1b22621fac0759ece62658db363216d270dd37a281b71db7545454cca0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SEYOK1635365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89acf326cb45a66c2074153f5538e4e9546d7fcf448885c379b93d656c12d9c2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU7428026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71513c9cc615dc2cd04bacc7a272c2dcfcd8f0ead3ad5114c9107e219d027a7b. 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/GBSMU5609274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5316894ef2e7e482fc59f3dd079db2848861ec5d63109d006dc70aaf3f96df. 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/GBSMU5609278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95341c89e375f5b8d3b4a65d5f06019d6dd0c469553c631045cc05066be65637. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/GBSMU6976175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d42c467fbc58780f9c5cc0606152bed9abaeafa1a1eae83bdf3db49d286e38. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/TCAGJ2231568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4c99b65a37548cc477752336c9522568a853dfca7f7d4c701829a33cf10405. 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/TCAHY2469193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9c49f5e960cc91b7e44841d56e74231d03e30ddc373e36fd91137e231f4cf7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAHZ2439905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7cfa2634838fdf7ce5556b4141177a31bac2259e14a469f096d5005bc8c13d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAHZ2439908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d931b1f69be0c7d6749f5a5ed838f998caa35b66422aa7723230e8242bf82b3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAHZ2439912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e193df7f615a0acf33ba4bb2b8febd0188d8259526687cb243741703f1387d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAHY2469412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf52f631783512acdf8cd663999639fc2b4cde06348f2e1a4aa3ed395e084ade. 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/TCAHZ2439947.