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 0x8a49887330bf9cc4137d214757a136b63b0b8c2328730065af6ba7c856d970e5. 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/d42a7aa5-d153-46f1-bde2-97a4436fce92.json and https://artists.proofprofile.net/proofs/artist/d42a7aa5-d153-46f1-bde2-97a4436fce92.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 0x0aafb03088258a44659c44418a20ea24f78e4db1dae40c0b846106a61efc6711. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3WZ1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055b82021d767e9cb367dad36dc634c6d96603376a22cbf0648af42e0c151538. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/US3WZ1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273517a9f161b5b3fac85bcf0e52b5a4707bed5cf254fae2f8974e0ac771f673. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:36:02Z), 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/US3WZ1000011.
Jam in the Van - Honey Island Swamp Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5894702b521dca66bd3a29d0ec6122b8fc83639ebf7c23d9a6786ebf0db874a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3WZ1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825850e0a6febb9e015b8ad9304ec01bfebc003e27231c895d55896e66d86184. 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/DEFR11600063.
Live At The 2023 New Orleans Jazz & Heritage Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592b8c45ea575d22c4861d2f8315f2d606de03f4070b2b10b6479d3ddf3c8ed0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZAKB2326990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399b3965e0074c4ae65b329d36e5e147b88daef60a8b4f49bb744b8484fc7492. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QZAKB2325503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb53d5c21ed8f00019de4a88db770b94f9c7558445013631d5197e38d16cef0. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:24:29Z), 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/QZAKB2325505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981ea209b953c1dd3766bd7590d2d7a7af203f2c6a023011749373f9bdd91cf6. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZAKB2325508.
Live at the 2025 New Orleans Jazz & Heritage Festival