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 0x3bd6fc744292f5b5aaaf1aa3ebca63fa6fd1a6700031ab4d718f66ab933d4b45. 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/be42dda5-11dc-45bd-8da9-de590041e0fd.json and https://artists.proofprofile.net/proofs/artist/be42dda5-11dc-45bd-8da9-de590041e0fd.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 0x535ac19e496ea4839d071d7c413b0f4baac9bbb7277eaceab7ea30c25b2ab26f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MX4971404334.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b578b6b5374a4d36f8a7b10a4b7ace3024bae01d49da64255da0a1521d34543. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/MX4971404292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b6e53a6870329cb72a9544d9b2a91f558a801049edeabafcccd14fabba2026. 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/MX4971404299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ed828ed9fad775484e2474d147196b77528204d847694f6d7ac5d6f67e281f. 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/MX4971404315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060a1beb81cb5b8c1d296940032f3b444b39ea347e30c783b9ba6a486b90990c. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/MX4971404317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb0612e55fc74bab5bc3755cd6a4cb5b8390928622c611d6f7cdcbff2425dcb. 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/MX4971404318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e12fbbf1830e1cbc69efec104af6d8275166104ca1632f5c26578f20432480. 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/MX4971404319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b15395f4a1de79d0fc4165ad5c142c02ab93d4aa0b5d73d479b9f2b577fcfff. 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/MX4971404320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6c0c3fb7b0539280c57c59bff97831bce80684eecce9574c6ed94d7e466079. 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/QZNJW2234053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0672bebf6faa403b317bc887e20c565bee5a2f6b6d35189261742676a2f0f9e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:21Z), 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/QZTVM2277744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd4c41e4a2f4cca33ac697e5e4dc76ff703e14632e02f3414f0d4b17876486d. 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/QZTVM2277750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf878b8bfe796b56ae223c6eb4dadb978c8167905a236a5e035231e6a1161bc4c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:28:53Z), 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/QZTVM2277755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e27e975fc92b4e346ed32b66197142c3a00b825f892f58aa316e90cf166b22. 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/QZW9K2387710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cc758e7d3d123b3e05bce191b2a0d4c3dc67b9bf5101a36b7fbadf6d7c6321. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:42:37Z), 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/QZW9K2387712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa417731c77a40dc571cd2fb4b79aa61a19c692f70c7f6620111ef603a32bea. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:55Z), 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/QZNJX2494466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca84fd9a396b3a1333de64c7f55d9d19e86ec535acdcb333609e07ec4d374f0b. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:47Z), 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/QZNJZ2483721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614ff1b2b110af28785ac75366755cc3bab451dba2a9c9fe0d534b94cd746935. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:20:36Z), 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/QZW9L2437486.