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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2840db5be39dcdd7023c4a419e3e5c262668e83bf201344e8c8b1da26495c3d2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97209a5e-fa13-48fa-82aa-66eed8aa4084.json and https://artists.proofprofile.net/proofs/artist/97209a5e-fa13-48fa-82aa-66eed8aa4084.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ice for Aureliano Buendia (Deluxe Edition)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9372d34c977bf2eecd23705f484227375cf49adef6e365ab00591fc1a60474a2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX201572452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd0da63e265ae3d160270183723edad3d19fea46ab6a00d412d326900b9d94d. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR10S1597928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b14b93907f313b6bb0891e18315192d3be9085e8fa287e06dad25cfef11583c. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/FRW772249499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7192b6460a6888b39c9d09f5630e50d4e2e9956a8f98eaf6d325d6b538107560. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/FRW771818140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a910dfc57342499e76e11c5f1680ef392567082155f4f33a015aa6dbef03504. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FRW771828431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcfc5cc8ce8e29dc77ffe6e0da2d48f71ae2ea2b4973adcf617574c936d10e8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/FRX991800824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7952fc48de03fa0ca6c3212ecc7974abe281ad60fe823cc3966dfeb4ad61d5. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/FRX201839321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d7b01afaf0183fb7b9d816b149e3ecb4d4f0ac0d85cd37d11ec3daf1b031e7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX452100455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d761ae4418f62cde0d745079de9d8792adc688cba66c75c97f584e518d684ec. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX452411560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aff30b307b3e9267ab2b29d76f11523177a076998ce87dec3776271479c8fb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/CAN132402481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6ce1956a3929b3be7fce2ef8bd1a8f5aa2c66314428b13c5871b2dda8cc91a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/CAN112401916.