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 0x12ca5fed037a9e6c8ff90078e78c3ed16517ed9d3dad562e8070d7b9e224c4ff. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/893dbf34-46b4-4a7c-a867-5b613b6c58b2.json and https://artists.proofprofile.net/proofs/artist/893dbf34-46b4-4a7c-a867-5b613b6c58b2.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 0x028584e35efb1fabda9a15ab0183cedd15cea83e025e182535faf1037bc95db5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T09:04:27Z), 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/GBLFP2574820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246d31565061a72df1525ac99bf6085caa4ff5f7cd15278a1fdced2e9d3f0b39. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBLFP2574821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a656a99aa3d0cafc17856d371e8923d3a07e7f035b55fd07044c7d3e929f723. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP2574824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e17885e1949fff0c64dce66531c1aa1c31372436fb2f3d526750a02d5e22a7f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:29:28Z), 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/GBLFP2574825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d446d743448892c8f5cf43944d33bda845fa8fc9466ca1e60f55b3319d1656. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBLFP2574827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294cb60b06d4750f543ebba33a9a6008970ca9b04823b829b328fe7eeca1719c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:23:36Z), 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/GBLFP2574829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01812da35e0dd1f235ac5b95a758d714967d5b7c859d84047f795c4e893a538. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP2574830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd4e52a414f4dcb2ab82e2e2c159cae89c81894b454d43a38b64c943cddc955. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:57:52Z), 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/GBLFP2574831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661e390fa261b7268c98864bafdfeaac2ae1ec9fc33401905420f58ec36a4707. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBLFP2574832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0096284c0f1fa13ecdc894d8536c3add1890b3c8925c571df4123b37d693470. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:46:01Z), 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/GBLFP2574834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1432a9aa660574d1628551a6e819a192d6ab3448d1ccf02a328b8ab5c7eceb. 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/GBLFP2574836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f9c08d6504bb6dba3cda865bcfd678ac832269a8812ef9a1215d64d2cdf0d5. 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/GBLFP2574837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149c0f01543232d5be03238bc2f0f4d6c2223b6c1e516eed717510e0e6bee3f5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBLFP2574839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0176638bfcf9cd6b788bddcc2edbc0e12ef8d471e359fe8c6a75aff1160196d5. 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/GBLFP2574840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32811edff375f22c849b0d45a333757d08995f198c7b6601caf2ca39b585c185. 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/GBLFP2574841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a5eca27dd152853ef861019a31a2ea85a8f5bb333282540483af07e594657c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLFP2574842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b8d8c54d62c3166e1678a6ed69f6571c9c640ad1c9ebab76395ce0449d2087. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBLFP2574843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ca4be089cc6ecab2e64b93dec26299cce3114692880184a6ea35b3f322badb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP2574844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4c0f001a93681f58ba9bdb818b17632f624bc8dec9d4dcc6653a7d9776a25c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:45:28Z), 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/GBLFP2574845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31de0a84d41d6c841d13b1cc9cb0d48f75be7e639a1ea7f75fa32813a67188c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP2574848.