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 0x03dff3ee1d937c097b8bd010e4e20cfb8a2f22ace52a564686b275e276077194. 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/9bea059a-92f1-4c5c-aba4-a244015b973c.json and https://artists.proofprofile.net/proofs/artist/9bea059a-92f1-4c5c-aba4-a244015b973c.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 0x3022d868074e24126cf1bf7799d9b0a9e288eb9c66e76a570c8cb07fd6fe0c41. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE62M2117655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94eed73ec98ef327637a3ce6dcaa307be8488c807b297b8d1e2786a165253e8. 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/QZNWR2284026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d13ed45b0575716435c7813330c4b0411d30543d6c370b5d861a086907f4f46. 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/QZTAX2235928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a64627a7212046bfd630b34728077d954297fb2de24e616238a0b72b0f9640b. 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/QZTB52298858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740a624df1365dc5ba60cfab9d3e9b9f98e49055e1566359f7182ec979fd1201. 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/QZTB82240163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf57d61e291d3062ce1dd97fc20a861f3c3e67c407e4f1311f9a696cc1d67ab8. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZHN32381844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67fc9ea7d7e87456f524905dece30b2798dc97189fc255fa0456ebf56855149. 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/QZMEQ2317810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd4a3539ae2935250f6acd4673e7719eb12dfc244593f9c8182adb20bd56212. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:47:35Z), 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/QZMEP2340828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00a8de3447c706d396ed74aabb92d080beb79ac3a0bdbbcf67bd0adc83b0a3b. 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/QZNWX2482631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684707555c61afeba8ccb35443191151b8711b461beacb471bea87055b041ee9. 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/QZNWX2489987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f548104e39da14ed66c658fa0a8b8864a719a4a9bc9dee2531c14cbb8b26e2. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZTBA2409087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e58a33b7101afce3577d9b23b59e28a609341f092f290b1d5e302c19c999b14. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZTBA2409095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548f7d6272a32c5ff0d1f43a7261f77ea4e76d1ce91b8dfd2de59fcbd96340a9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFJ2476646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3905e79c41926ac24d3ca0361244e7caa7d83d8e6143606745e654b15a46d7. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZZ792451827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa538c6d4dc39891c451fc80c11a1104243955d40673e148d9c835cd8af1c93de. 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/QZZ7V2429793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf306a1715ba22b1749211f75ce9fb39f61d1f6015edb3b4e454b3990048964e. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZK6P2551728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a655b91869f34999242b8e05f5c502d5c07748cf96ac8c320df5ed4999a18e8. 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/QZTB92551485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510c7ce7834675b691ed29801f2f2f8b301d8706341cae5e02ec34d9bcc72644. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ7L2589405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56868816eec516841181c18d559cc4fe734faa3365d110fa9aecfa7c67df9731. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:11:11Z), 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/QT3F92591358.