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 0xa0cbf09a76da42eee2fd1374a837969b522f8f6eca33c6f70e935b9bb3603f4f. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/656570c5-ff67-462b-9d05-fa7404216f22.json and https://artists.proofprofile.net/proofs/artist/656570c5-ff67-462b-9d05-fa7404216f22.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 0x88ffbd05489d22668111130e186e5f9779fb9d25e3b24a21fc77a42ccfc4c49b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXN21941386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2524b688630cb46fc90641c151abd10d4772e7bf2e9ed2578a1c8c4b3098ef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKXN21941389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb47506dc3310544e0b86d4807f165a5c2143767212b65ef063447e750b0586. 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/DEEH62200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb47506dc3310544e0b86d4807f165a5c2143767212b65ef063447e750b0586. 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/DEEH62200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89870daac6819ffc4275559447fa8901afd1535a8451565c0e7431f4d93470a8. 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/DEEH62400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8728cd5141c67b5f964bef86532eb8a6c8c3792f05a15034b8a9e668c9ad0e6. 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/DEEH62400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572149309283efdc58f5247ce2e978a3e437e87c667724aaaaa509d39d9a0d82. 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/DEEH62400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8728cd5141c67b5f964bef86532eb8a6c8c3792f05a15034b8a9e668c9ad0e6. 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/DEEH62400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572149309283efdc58f5247ce2e978a3e437e87c667724aaaaa509d39d9a0d82. 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/DEEH62400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ce6386bf5b458fd30a0c5625956392fd8df6693c649707476bf3c727394f81. 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/DEEH62400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c2c53e475df334bd74cfcf79563f45fec62827be6740bbd29c77c467b51973. 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/DEEH62400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb07ce85a366c3cfaf153ebbc73a2d61d092fe773b6d0a6d71df3e1d537f6661. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEEH62400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89870daac6819ffc4275559447fa8901afd1535a8451565c0e7431f4d93470a8. 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/DEEH62400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8728cd5141c67b5f964bef86532eb8a6c8c3792f05a15034b8a9e668c9ad0e6. 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/DEEH62400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869e6f449ddd5114ac9007c73989313f9f2269bcbecb8185e11aa96c379b33e6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:42:56Z), 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/DEEH62400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac8ec04a0a2bb1cdb1a6245fba66bbc7d434b42751e6836efcc95a0efc583a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEEH62400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc5373a48ebbd7b084b5f8d11f699739b6c57c5bbd3d3e1616321dcca304969. 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/DEEH62400138.