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 0xc48da38b9b298a36b61b2bcdb54e43a1e523463f8ff274ee8c5420495595bf1c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68b098d1-d3fc-487a-90d3-622649dfd45b.json and https://artists.proofprofile.net/proofs/artist/68b098d1-d3fc-487a-90d3-622649dfd45b.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 0x21f48cbf28fb0dc282d1fc19b4f22a1b9d81c7e2e8c31fd1b06127834062fe11. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEA891300372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d08f3c97eaba2676e5e61c679743e3bb47a74e219c353c304d5e09ee39bc1b9. 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/DEA891300384.
The Art of the Percussion: Emmanuel Curt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7760d1555b2bbba74072c16668cf6bd22c52db9faaaf100d11d9bdf439e5c065. 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/USBN21200351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466c7c04e1e01a38f645bbbc41d3659d75f7f3e62ced7ec55f14a17bf8e24ac5. 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/USGR10500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0e0a6573303e135ccb91020caff5d3b4b8798d55db96c0a840cb6228c8013f. 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/QZNWQ2499640.
Night Nurse - Kruder & Dorfmeister Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b893ae14a9f6552e3418a8a3d7fb910aebbc6e3bae90bc30e5d662a0a46b5. 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/USIR29700232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d7149170d5e510efb09d5edb854b9b8469f2d0107c1aa27183b40e2dcdd9a. 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/USUM70750508.
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.
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.
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.
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.
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
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.
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.
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.
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.
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.
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.
Radio One (Live at Festival Jazz Sous Les Pommiers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11200fcded785c3479670edf07afadcefeb529eadc96607ee9950f2c0db7f57f. 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/USUM71412447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dff0a8a22b1c796dfbe0abaffc2ab59f8ad16626a0d03a756c46b24d21e6200. 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/USBN20300893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0ad279117c5b3c9b72622eb7cd8f6d938ab03e8a57175b1f2b441be724d349. 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/QZNWQ2499644.
Back to Heaven - Led Zeppelin (Chapter Two)
Ochestre Franck Tortiller (Shut Up'n Sing Yer Zappa)
Debussy… et le jazz (Bonus Track Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45edbc12798a78a8812ee2ff8dde73b41acb9d0d95294456944c329353d2545. 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/FR7JM1810030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e3a9ec65cb9551f72f520e4a4c4cd4c92f912af630988d8f5c735c01f2c048. 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/FR7JM1810040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be88d7fdc4af164defe7df07e9ca1ffb81499c2221db4b323e8e60a033a59e5. 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/FR7JM1810060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a998e110b6ad4f1035062519161341ad30da8df3d3b3d4dd1a5404391cda1b9. 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/FR7JM1810070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb133629c9f516fe669301bf11d56f3afdcd6667b1619a0d60fc976500ae7f5f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR7JM1810100.
Hommage à S. Pickwick Esq. P.P.M.P.C - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d3cd4cf86a59aec747e936b96ff1fe6824453ff0c87e832625a4ef54e6eacd. 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/FR7JM1810110.
Rhapsody in Paris (Arr. by Franck Tortiller)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd067311acb6275979d1a0c30d3f0da35ffaded4cb3112b0b8581b2fe038c27a8. 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/FRR370500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4943cd62dc40a5b9430d778082c5cd1b619ab3e930f67fbc463076a285f217ab. 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/FRR370500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0efd923f6f116b926bd3b55a16edbf87f925af2222cb4851049e53a9ad09c9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRR370500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cae1718545ef26731e6277c5eb02be3cd45bc55f4d831c89464537ea0ad7288. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FRR370500100.
American Rhapsody: A Tribute to George Gershwin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ec21b4e53e4cf9703403150e5ad0228f48a5c49bf1e4b11c0569d8465d41ac. 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/CH1880722502.