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 0x19469dce31e5c5c971d7af4ac0181017a74b2e81f6f00382badb4ba06a9eeaf0. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9c5c08d-aa29-4a70-bce1-a922bfb79afc.json and https://artists.proofprofile.net/proofs/artist/c9c5c08d-aa29-4a70-bce1-a922bfb79afc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dry Bar Comedy Presents Jordan Makin': The Bffg (Big Fat Funny Ginger)
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 0x9734c4bea31280896f7ed81c2b94d3bd393f6b2984a1f6786d6ebed0cab15b88. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZHNA1970395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4f903cedb2aa066518e9296f29b333f4e333767697ee6f46dfdfeb55f0bb10. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:47:00Z), 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/QZHNA1970396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2f4a18bc2bfe87b29c3b889dc12d698fde2de94567847a7ac5774cd0eaf076. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHNA1970397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b70e9bae095664801c892c1cbcab3593f85fe6477b8d4623c2ecc0461cdcd1. 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/QZHNA1970398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dcd44b9d38dcdbdd8fb05b453d74ed9cbfc2876b0381d3872b4837f9bc948a. 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/QZHNA1970399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae115aa1b4cf0c4469964d5c84a2fba8d82c4637dea46936c47f0f8d758352. 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/QZHNA1970400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa172d9f0a93059f7cdae6742b3b4a17b47d0e7b194ad808eeb3fa16771057167. 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/QZHNA1970401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475b44704a4fcbbfac891dd14f7ab275b429e36712fb1175e54f448dc8789716. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:43:46Z), 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/QZHNA1970402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bcf468ccceaff1ccd179f9aa272253f50aeab6be96c05e9db85f89e00c244b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHNA1970403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9857f3b653c7db07f144881160242238dce2fffd2810ec4433de5eeafccd00b8. 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/QZHNA1970404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445259aa2428a09b0fd91856fb9461130deec70b5d6c8304a07489ac0b528334. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:37:42Z), 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/QZHNA1970405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc84ba848ab512a1902a3fbfd2b6de33c693a7c767123cf7027b7e1c0f8c5b7. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:38:15Z), 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/QZHNA1970406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3e76e12caab3533bea12b40f589a4178362ea035b58c61f600b91047de1fe5. 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/QZHNA1970407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba07340e2490976f8c40ed59323046e1f751cef1299220d5825f829f68173e8. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:36:58Z), 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/QZHNA1970408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6942fe8fed9e50b32c19ce5bcbfecdb4be1e624f39b26fabb0fe217236abf6f2. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZHNA1970409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374caf7b10467ea006c2e86d47c5b4db4145d5a80419f64e4d1646702759ab07. 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/QZHNA1970410.