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 0x06f62943fffdb6504c65d5062e7cc2bc6d78ce02d2d125cbdbe434df6c585f62. 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/7afd7f0f-c17e-4305-902c-4c1f26f8a694.json and https://artists.proofprofile.net/proofs/artist/7afd7f0f-c17e-4305-902c-4c1f26f8a694.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La guinguette d'Aimable/ Danse du balai et du tapis
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 0x9502390b150e0677465d86b453acef36f4506d32798f5c5210846ccd8533f954. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRZ196000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf002d5ce2fe75731b49db3401f47f2320c859d60078427912dec2f8ddd2df43f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:41:04Z), 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/FRZ196500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350b4c6d8dd0f5fe1512aa3448ff58cea434511a3502ca96c82aae4bfb576eeb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:35Z), 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/FRZ196000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2122b6099baf7b76dc8235f21f0e9e2274b8a6f122d64cc78ccb12a4f281f6dc. 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/FRZ197200190.
Le meilleur de la Musette, Le « Bal à papa »
La Belle Histoire De l'Accordéon, Vol. 15 (REMASTERISED 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1108be2cadcf0367e73b6ea80704ffb36f2944b0c14d8ed5c5556033fe5effb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/FRZ197100420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d74029392b27a5365db308abe4f25d66d94943345e7e2146d018883eb935c. 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/LUPBH1600193.
Les plus grands succès d'Aimable et son accordéon (Musette de Paris)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf531e3db20ccf6368bdb46a3065aaabb4248c11039ce7fe7efd5e8292cf6c128. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR6V82244212.
Les Plus Belles Ballades De La Chanson Francaise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4243eefbd0d014de719913e004de9e853e5df8562bf65b4fd82d3bdbe612aa47. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM7281464329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba407d76c99c5d7388f7ec5c494879d0626174dd66fb5db69a33619384aa99d1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM7281464337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c766298f7f0328cf5298f2701256c7397d74bd60386b67887959ec212a45040. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM7281464353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c253e3bc1f248b405c801a646eceac7a72e656cfff6a213292c6f7f9f9d42d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM7281464361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b823e9fb2e4a17ccde3a206c22fb0948af20f678a38918c8cb5abb692aa9ed. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM7281464344.
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 0x4f71b04aee025c58e17e9c1a26c331d10462e02e1d0176b604a6defad1b59cf0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM7281464356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a9f9b9b0a3f036d915db7a61c4d57a31e491abba0511514d5c5c86b34e099a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM7281464365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ef75c182c668deb459d30e8fd1e789622909fbd61951f65914158fda9c2eb7. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QM7281535215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954ee2618f9bb62dcca87b5ac3209091a9a3d7187b2f2c19851acba50e6b71d5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QM7281535225.