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 0x3507fc2d7a5409ac59af4f395c0b454173376e293643ca4bfa7e319d0ccdec21. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55192658-5870-4414-a588-ddc422afb34a.json and https://artists.proofprofile.net/proofs/artist/55192658-5870-4414-a588-ddc422afb34a.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 0xf9ac1921e0f697f6dc7affe6d93432a556d12c542d1fe0a426e148e2a2be5f0f. 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/QM6N22328053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e61feef556583945864f5fc565032371d375a6c7fe709c1ffbd816ed054c18. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:20Z), 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/QM4TW2412392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bb374dc14cf9fe4ab01f50d8c9ac7af2540d70ccd213f97ac802090b7e412d. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QM4TW2412264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb548f1aeecc391134663bd7ec383f40ed896bae2273c860dba4c1c851e7b9820. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QM4TW2458905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5556692da752c21e24edbc87d4227c53e9255dd74328eebe96f55504053525ae. 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/QM4TW2472272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9447dfa017e1e09c53eef7b15acbf23a5a47002c78794ed69008933777e84a6f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM6MZ2424695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffa6b37fdf8c4b25633b574bba78bdf0d7b80efc70e11e5753999225116d316. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:58Z), 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/QM6MZ2424696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b4d285745755eae9969bf5b1e406b02a3f5da7a5066c2039d605a44a211c0c. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QM7282407052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff815e3836906cfbcb873e774198c9383acfd64f3d392f64062f0dca0e03c68. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QMBZ92443134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce409b7ccf438c6ab2f56e18174397e1b5f3cbbc7a3a886e16207a05b03eb00. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:42:56Z), 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/QMDA62458587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88dd4cdaa5ef9ec894ce7be4061881ecbfa046206449a5fceeaf4870c1f8319. 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/QMDA72456949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4b49d20826ee9b2bbb315bf41367f85197cac06cf69b068578eebaa0548a66. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QM4TW2532365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1b2c40880250bed210d7ae596b80deac6512550668884881fc982f46af9f63. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QM6MZ2544131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68325ca12ce4bd9393c408f7714ddac7a07f2ba6702ca67285bb2b60c0083b6e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:44:07Z), 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/QM6N22513136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8404670c8da337f0be36a5885d9e666b21cb3f98f5e0931276297a21cd0fb99. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM6P42584453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0754be3c3f52c4a936a475a89ad137bb29c4ad79d4aed632db64686e87e4ee6f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMBZ92533054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23db97cbe439fe22703e4da038a2943415816368e084575e1c0a2ea102358227. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QMFME2538969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4240e0aa742f85b6df40bd6418f5adc6c48a34377726b3727863a2aa9c260ff1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFME2538970.