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 0x058b84ab069cca252b96bbe8ba2f51994547a07c7e82a4febd60186b7a33c6ee. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4275943-811d-458e-8cde-49763b41355b.json and https://artists.proofprofile.net/proofs/artist/c4275943-811d-458e-8cde-49763b41355b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x308ad813124000772cd611c1b79f3f9326f1a4dc273e16fd0d920ba3fb5e02a8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR1F30500540.
David Bowie in Jazz (A Jazz Tribute to David Bowie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c2b16be8614092a8ee3e43d63e260160d8ea6ee3a052dd0b083ba9a38f5eda. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR1F30500570.
My Wife's Gynaecologist Doesn't Like Jazz - Live at Festival Jazz Sous Les Pommiers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe802ee1dfdab9fdbb4638969027f998c67a89d34c4141cb8f363378a8873c6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12209851.
Radio One - Live at Festival Jazz Sous Les Pommiers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06d6972f94efe9f927fb21bc3643063fa29ab57e26a6c343a19998d5b0743d4. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR9W12209854.
Love in Outer Space - Live at Festival Jazz Sous Les Pommiers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14eef47751eb49d4e72de3d618fc082b101a8158199c40b0b881c1faacff827. 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/FR9W12209859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d869abfeb6e0f1bdd8cdbe52a454da1bf34e330f0386a7e2a8f0eaef71d862. 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/ITZ681000129.
Pop In Jazz (The Greatest Jazz Covers of Pop Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c2b16be8614092a8ee3e43d63e260160d8ea6ee3a052dd0b083ba9a38f5eda. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR1F30500570.
Zeus, God of Dogs - Live at Festival Jazz Sous Les Pommiers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d63bd3164adfc546b385b66b0052f08ba9b6561f2b438fc66026140b6a2cdc. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FR9W12209852.
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
Here and Everywhere - Live at Festival Jazz Sous Les Pommiers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a12cebd592e821cd126d5dc6ae4baaf2656b1672fe108af1db86a1b928e36a. 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/FR9W12209850.
M'Dout Masaï - Live at Festival Jazz Sous Les Pommiers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436e184f5316d67f17192e5cab98d0e2f990fd6e0d3e765b153048fd6101600d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FR9W12209853.
Loulou - Live at Festival Jazz Sous Les Pommiers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19aabd05a356f51d38cc400df665186e6c44da9bbcd1b1f5a0b57c86164c2e1e. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR9W12209856.
The Might - Live at Festival Jazz Sous Les Pommiers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde133a06380d0771aa445d8c7d0cccb979e903fa69439c6c50093c09ae99f97d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR9W12209855.
Où va cet univers ? - Live at festival jazz sous les pommiers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f7fa0ee3fb69668c10af0fbf957522afcf42ade6563e375cced899f4b73e53. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR9W12209857.
Kashmir - Live at Festival Jazz Sous Les Pommiers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86c7ea0d8b48c544c6eaf6028b06c6d335464d92e03b1fc729e62bb087455ab. 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/FR9W12209858.