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 0x01269a5a74fd25113852d6f8664f09d64a073ffaa4ac88941ef0c0ca53aac142. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfe3d979-d40f-4ed0-ad6b-2c18e5a5d4ab.json and https://artists.proofprofile.net/proofs/artist/bfe3d979-d40f-4ed0-ad6b-2c18e5a5d4ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Compte A Rendre - Feat. Stone Black Carré Rouge
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 0xc2e5fdf23dbd2f9b29c5c84f54be1d82b003aff1dfc3cb6f4d1c8a1b4436ac82. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR6V80722723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c57d4b836beff33bdd08e11545e7ce4779dbe2ca849fe27eed4d077a819ebf. 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/FR6V80722724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4439139aacfcfeb238c0836b44e58e2e4072669f793ca1f1bb1db2cf6cae69a. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:26:53Z), 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/FR6V80722725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2b3e3f9bb5ee432e1ed81e00cb9c6a0236c5f654d1e525067d3eecc8acb982. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V80722726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3fb5fe8e6977fd197ba1d2fa9b958339db6f5cbf879e112cc347f9b144596c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V80722730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaddecffe59078ac131572f1f5e881545928df35ca71b741a0864db8fca02f7d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR6V80722731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde8926c6e55c00ac0ccd224d614f73734689ac369e42d016ed99149de7513c6. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR6V80722732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc65ad937863aca0a0f0395a5a796c7b80ed766577a886dbd7f33134717d9d82. 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/FR0U91200538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5415dc3107397fa59d8d43661fe6dc45bf36d19d24a6be4f778aae043073a530. 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/FR0U91200539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d207e621c9b69a97c818fbf996ed573db0d625ab58426cfb0e926cde46a0ecf. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR0U91200540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f6f7180fffd7b36b602ba0c6cb0685350058a40feccfab1c21932f52f751e5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:14Z), 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/FR0U91200546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ac4c66a86f7cb4938ea852e4b9c585c5c396f33ea7ce66a12994f2f855f9f8. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:00:01Z), 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/FR0U91200547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0727ac79fb75a78f297a43f07e5b43dbc5b64eb66d00946f5e40b0f4c08196. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR0U91200550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27ea1d503bf4419bb61838cb757ac11ea17f5909acccd84aab5c464247980af. 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/FR0U91200551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe96d92253270186cc06b269eb7152739917ba41a5834b26f4ba43fc3ff8b94. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/FR0U91200555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2fed55af364fa2d088cd9f268be69da09c4f247a5875db5fd70ea2b803abef. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR0U91200557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59478263c15499e10fd3b6747dddb11fb5b1816e6badc707df137e48b7cb21f2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:19:02Z), 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/FR0U91200566.