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 0xe19a74b2a0528afc80b5cec36b00da97bdc521cf6d9fb489e759377a2df024ab. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/806b6f3e-ab49-47e2-acea-436b93afcbf3.json and https://artists.proofprofile.net/proofs/artist/806b6f3e-ab49-47e2-acea-436b93afcbf3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oh, Come, All Ye Faithful (Arr. D. Forrest) [Live]
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 0xdeeb673900799f3175cf459bcbc6c64d3a57335208bff072d64cff5616022e90. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMRB31600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0b0f15d222260c26f53e27b15fb87f66323a2b641e266160389d133414af0f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMRB31600055.
Have I Done Any Good? (Arr. D. Zabriskie for Choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abec4110bb122fbff226735c6b01a9c946719668eca7f377fe357235c5929e7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USRUF1010388.
The Redeemer: No. 13, And What Is It We Shall Hope For? (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3690bc6cb01a48b73cfd86311ab336b49ba72a74293fe59a827087a56bf52ebd. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USRUF0910172.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
The Redeemer: No. 18, He Is the Root and the Offspring of David (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0993ded1fdf64238d589c2f395ce652f6677c6f98d12c5daab9d789c71fb96. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USRUF0910177.
The Redeemer: No. 6, How Beautiful upon the Mountains (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd7401daae155c32e2c23647e851522ad504ece2eee7f97a9bc615bd9c8f1eb. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USRUF0910165.
Celebration of Christmas: Come, Lord Jesus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de3786199403ea135393def9450eab111f566ea771d189fb737e1ef9b91ab08. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMRB31300043.