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 0x6d53f45cb96e6ca9eac4439db1cfc6da0055c2fc2eb2a2df944fd0162390c8f6. 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/0a038ca0-e293-4a06-ac7b-73c8d2208756.json and https://artists.proofprofile.net/proofs/artist/0a038ca0-e293-4a06-ac7b-73c8d2208756.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Corpus christi Vol. 2 : actes et miracles
Abbaye de Fontfroide - Musiques des Nocturnes
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 0xf93b685d4f7d63f3bc76eea9af5bfc537c0fd96af2b2e3a2dc46013bc7b0e16b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR8X62400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e82a52b86d21bf3bb657977eb83babd431ea6c00d732936d658b6112d965c33. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR8X62400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20de2f77bebbbb666bf0aae22cce79e920077d15aa963614e8f892ec7530c4bd. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FR8X62400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0a137d012469526dfd5f3668faeca21cec7ed65d369706288189d96a2bed99. 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/FR8X62400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79362576f3c8c7a0d436e967617de46e7e3d53a49c3997d4a32cbeab14eb0937. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR8X62400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf627044d1310a01588df304325add8bf5468722d09fc10bac4b689c55dc71b5. 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/FR8X62400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9a4275ca9a5d3d96d4ba9ee7f3d3d9f4bec4422357445d88048b7786e42fb1. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:46Z), 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/FR8X62400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3cc4a986152549808712c4f125e1a48f70b762e64bd599e33a07d12877a5f5. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/FR8X62100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01198e89342e6c753e3ac3538c3d48b9660e062b60d327af14e4796ed16aa1fa. 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/FR8X62100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cdd5ca2332866dfa764fdb94d43e751fdc738d63c052c5c8776a0860bf38a0. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/FR8X62100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d2a02e6540ea94c3e082290803c4be6fd9b0ea6b6f49effadcafc856145b73. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:22:16Z), 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/FR8X62100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f1d70bc929f058f2201b4af26067bae4cf708dee94b31be8dcb3d03c6cec7b. 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/FR8X62100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc59c487c0949face3e578ee3b4bd57243b7f207542d679f7217a7017d1aa326. 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/FR8X62000001.