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 0xf4ae2f7db014fccfd98bc91b512bb17e48d32fa658dea07e42bd8b81ae6cb883. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0e0af2a-1aa9-439a-8939-54247057f5e2.json and https://artists.proofprofile.net/proofs/artist/a0e0af2a-1aa9-439a-8939-54247057f5e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bleu Bac (Remix par Julien Perraudeau & Human Koala)
Play Kat Onoma (feat. Julien Perraudeau)
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 0xec3ca16360888234e7fa2164c4c13f9b54a08eb4cb7ba35ab6e4fc1a687d67b9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRP101500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b73469839ef3058994ce0d5ae74c62b5bd4b4f7cff4ee1c1774ac2803f8811b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRP101500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3f0617d4320e94eec1045dd920029e11efcf4bd9501c3422c364e9e06038ef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRP101500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bed631c617f7b2dc2bf0652e419693d4ba75c373497d4ece560f6a6db55afe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRP101500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76f34d0cd0832bcab2958d4aee39c5598d6fbbb3ca11b8eaacc6436c9fb8492. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRP101500010.
S'envolent les colombes - Hommage à Mahmoud Darwich
S'envolent les colombes (feat. Ruth Rosenthal, Rayess Bek, Yves Dormoy, Mehdi Haddab, Julien Perraudeau) [Hommage à Mahmoud Darwich]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0554bb084f161d16c1e3f81c573bfe5d8328b48ebb6bd6df08227edfc1204ecf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRP101300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541442c437e9c11c0f7b41fa9a5afbcb0b26ad614b882b7e9a651ce7a7011635. 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/FRP101500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7346f4adfa681953fffb9a3a3d5573c6023450a21cc6a9f13fd36e4589e94a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR6DC1300240.
Le cantique des cantiques (feat. Ruth Rosenthal, Rayess Bek, Yves Dormoy, Mehdi Haddab, Julien Perraudeau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd006c7ee00cab8d9d83cea052dfb3a929ce843d0142e66aefd607d2eaffe4f2f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRP101300020.
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 0x44037734504fd51f32f02728445a3e2186546c90f410497bc759cd82a003132a. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FR6DC1300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d59b450a7066fc5dec879c0dc6ccbbb2615ec7a363e11ee89b03335ffb8f4d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR6DC1300230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c5704ef78e4d0ad4e0f5c73f0e01519b935b3806d0782f0e61d87b4b761d1a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRP101500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa662c23368fd86450b07088cae09ea2b519e00bbafca4f7c0453b52feccec76c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FRP101500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2767af9aa12ccd8e88914fdf0cffdcebf28cbcbd1a3f5bcaf8b407d24215d8. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FRP101500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2aa0be16ce1e97cf15ece7daa114f05808149a2306bcfdb1de425aece0e43b. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR6DC1300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054df39f3c434da64fca9caee08ca2b5f7585deec07d9bbba6463cc863f06c26. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/FR6DC1300200.