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 0xb4f7cd561f63ff9e6dae352acfa7e18c58ccecb2f003029a584c1667b8f1dde6. 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/561bf4c0-8974-4713-83d9-cc66ed0bcbc0.json and https://artists.proofprofile.net/proofs/artist/561bf4c0-8974-4713-83d9-cc66ed0bcbc0.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 0xa3dbd0ec2021e2e371610fb06eb9a9cba7fd5c20ed360f37851309477d73ad01. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:58:59Z), 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/FR6V89803965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a8390f9717bf8cc068a67d7f041e154db49a579119090ee652003d818f64eb. 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/FR6V89803969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24647b35d42ac68f5e559f0f9ffab655f811aac53aac9b023064168df74eb5d9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR6V89803971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e098694497765190884a75621d12397786d357f73d786e70a6d19cb80b49f1a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:56Z), 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/FR6V89803972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7e949d661c297f6c7f3861d575889bfa7f3529a5fb882bd159a77ef10caa4e. 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/FR6V80628265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c140f8c0f39035c4e50cf903038142eb33b629aedc60a01ee013ede8842f57. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:52:14Z), 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/FR6V80628266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111f89ca06ae64fbfe8f84a1cd57668db652d02093ad7faa68b9a37cafc3e145. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR6V82212228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050b83153511134aae21055eec42035d7deef56ba69c44d19f11736e38f5d5c7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR6V82212233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661fc8ccd868102b637538f153900bcbc97dbd333a74490388d8f0afeb21b93b. 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/FR6V82212235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1afb23abed605478d0e1b2e733549aeacae2468d42f699690fc274fb8ad565e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR6V82212236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54f55554612812fffc28ec5601f777583546f90780cab74a4667c8622d2e59e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:08Z), 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/FR6V82212239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc75415247734e11a06d08022d8380dac4205ff659076100513928dc6d0be78. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QMFMG1497729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af31b03d7a566a89f6a709fe01b34a2cad40f017f77f39c6267ad6e1797497f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMFMG1497730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cbafc1c18e95ec6ab71703bb4725edf88f8bc8302dcf1da0074e46c99c5d6c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:56Z), 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/QMFMG1497731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1726aceeb763fb46a5bc20efd13664b8bb17038f73ec22c4a207a1caff5757. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:33:44Z), 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/QMFMG1497735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8a24be00740c698ed88936b1c53b16fd24672ef5b0e2e1a7ba1279e46cc1de. 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/QMFMG1497736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b7d9b33c11c46a7379278f6cfcc71759775a4ccd9da8c6e244588207dc5161. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMFMG1497737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e13f7c6d060d6623243387bcf5dc8d3d3d5ab81b5fbb8599be1fad54970ba1e. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/US6R21402145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1571660e3f39b410c91ea0f5c1795a8b43454c393ac59b9a95050b12c2693ac9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:28:43Z), 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/US6R21402148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0e0b393705a321fd9df556143b8193eaacd34b6e502e447fbc70b19dca990c. 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/US6R21402149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a898e0326c17a63ccb532f94e997f27fedf434e16fd0ec0f37ed2006746f342. 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/US6R21402152.