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 0x68e7c1b3b9b7c79eea43019e86e288395d910215e6398676a1938a8fc9b190bb. 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/9d246a61-7695-4c5f-8894-15de4bd07a8b.json and https://artists.proofprofile.net/proofs/artist/9d246a61-7695-4c5f-8894-15de4bd07a8b.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 0xc5ed3ac6fc30967f59b126f91fb50832c11d27b0db9ef72053c8c003fab2a177. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNWT2130275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c013685fae38e574be2f082f9907c29b734c6c057462c32d2ab2024eafcfda. 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/QZNWT2130276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe7380dfed60ff5e1afbc5e6f7806e99e11d985a191ab54cc13d2707971f02a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWT2130277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6393ee4cffd1e9c170eb9be02c297c4cb03bf87994e3311da0685664072499eb. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWT2130278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1433fa1805bbce90c09b67c008820e7bc1bfcef812305b9b619586469da3d3c. 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/QZNWU2182892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b23541e3f95d4cb6cd01b66218a54684ab83919241257b50b7ff6f15f62bcf8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:20:47Z), 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/QZNWU2182893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f01c13a615f3b3f48ccbfabc831fe6e649a08402b5bb5bca742f1b590372ee. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZNWU2182899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34693d45c95807969fae00f742f27f2438b9735dc80515e81b2ba5194f767f4b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:42:14Z), 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/QZNWU2182902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcbb09b03d701e20cd333006ecb08a6b65fccf466f8d90d8059887164a01589. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:56:11Z), 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/QZTB22321327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9ecd89c64d4862219f17deba117dd10a67253b5fd071cc84f191a438fbecc8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB22321328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fc520322bd508aecc48c392e575481a8c8f2d6a925a80118ae570c957428e3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTB22321329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0c78af0c8ab9735dd9d206fda877b4c13afb731bf6ff1f0983eab41befc7f8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTB22321330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e2abb26cda50fb0d745b9d62c4486d0a2b421954bf00e7c4311f71d07e8017. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTB22321331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d868f470d7d6a7b9d079d8e09ea2afec16c8bbf1e0918512057bc37f2fa82d9. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTB22321332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573ea4e6d4f0da9b61395202aca9cab28ccf1fc571b5ad480df9835933991e03. 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/QZTB22321333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9a0fa1631c8e5ca4282c4a216e4249bfab6ddcedaeba289fc850ad915eaba4. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZTB22321334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a23c5cd123daaa832433f5bf70027ff13f37814e6f4fb7fdc00dcdda060816a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHNA2403127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2730355d989a09928f65df397d58cdc7e0cb3b24d333a77c37123a41dad08556. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZHNA2403129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678a88be0cfaec3b3423cb71b301b731c797ef114dd91afa66ce1396bef094e6. 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/QZHNA2403130.