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 0x1e13641f62c4a311bdd0febacb85d8720255245097efc3ead211248c5ffe0fc9. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1688d5f3-6f47-4835-8ef5-45718f8e871b.json and https://artists.proofprofile.net/proofs/artist/1688d5f3-6f47-4835-8ef5-45718f8e871b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canteloube : Chants d'Auvergne : Oï ayaï
Canteloube : Chants d'Auvergne [Complete]
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 0x22e53040d20d7a57ca6fc01c087045218f6848d35646fee27d19b4c2c7915510. 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/FRZ209423502.
Canteloube : Chants d'Auvergne : Obal, din lo coumbèlo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f103a1299e2df7ec736c8731ce131e7eff7c21524110a9891b2c3099770cf4. 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/FRZ209423503.
Canteloube : Chants d'Auvergne : Pastouro, sé tu m'aymo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf74a51bb59e0e21df1c249574a8269eac0da0620a8a72d7a996577f0feb8f1a. 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/FRZ209423504.
Canteloube : Chants d'Auvergne : Uno jionto pastouro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825ab7a7c4ec5518978c5f39ae57a82cda7e6daa33317be3ae9004c357df93a0. 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/FRZ209423505.
Canteloube : Chants d'Auvergne : Chut, chut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b6957d51ddcb62cfc84059ce30fbe8fb126f683680d09ff525a177b83d9ff. 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/FRZ209423508.
Canteloube : Chants d'Auvergne : Pastourelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0bcb56476ccacb82a0ade57c9f7f71c82d3390ac27c82b38daa3f1593d5947. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/FRZ209423501.
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
Canteloube : Chants d'Auvergne : Jou l'pount d'o Mirabel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c98ca091c2f86e01a5b66e60954490e65eb03ecb38f04fc85e3f00810c237bf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRZ209423507.
Canteloube : Chants d'Auvergne : Lo fiolairé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3713883646be2948755c9e3f5ebf9c4202c033a1458858b000f6302a6214986c. 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/FRZ209423510.
Canteloube : Chants d'Auvergne : La delaïssádo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4087c4c0901b403da06ca7710eb5826a173d152e57464de44971d9e0f8419917. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FRZ209423511.
Canteloube : Chants d'Auvergne : Tè, l'co tè
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea613c19513885eab2df33e96ef630ef0a288702a068b0feab0a98fced0cf8bb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRZ209423512.
Canteloube : Chants d'Auvergne : Passo pel prat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ffd05bb3a6f113b4d27aa65f77766bc2c5f2541542dcbffb1cec4be64165d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRZ209423513.
Canteloube : Chants d'Auvergne : Lou bossu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2adda88c0590fc5d117954c3812f854621fab753ad5ccd6dfa0873fd5804a7a. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/FRZ209423514.
Canteloube: Chants d'Auvergne, Book 3: No. 3 Brezairola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f89a8a77db565d8b87bbfc3f2f57e4d1c5922954d68b62e5ede793aa692ffdd. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRZ209423515.