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 0xc879fcf2726504fba644a67d6388aeee9551b60dfdba4bebe20a02d8be40b77e. 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/4e06a6d1-3e09-4efa-9532-bea6163f578c.json and https://artists.proofprofile.net/proofs/artist/4e06a6d1-3e09-4efa-9532-bea6163f578c.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 0xdd134157d07866631870fc116a12a0a44a57f8e231c55c68b8efa0d28abfec98. 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/FR88E8500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4847bd3a61bc78b160c06820d10d8e7d35d2bd5a89daf717351b220278cc363. 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/FRP2A1000490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f81e29eb0b3c66069749a17f0c0c38d7de62a20be51d2cd675cca0b3a11d4a7. 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/FR6V82111227.
Y'a des jours comme ça - Version originale 1988
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503cbb878a96ff9c84ffe860c1e3fa1d80cf83f87808f915f5a1fba4c1d637f4. 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/FR2F68800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b09024b4fc589e049d7facf86c24abcafbc2dc00dd284008fa8a1fd7fffda6. 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/FRZ988700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a3558094388110f84c5f5fca6df49bc8731370aa804fcfacd498c35e017902. 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/FRP2A8300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead01c86e95a9fd6119aebbe6d89f563c183bde0be7b0c67b153fe846ccce62a. 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/FR9W18600284.
Femmes de mes années 80 (French Ladies of the 80's)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbb3c56c19b00fb3e53b243a7b4da5317d90c45167d142885d02f07609fe5e7. 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/FR91F8200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0160adbc21327f61d7d2d9b7fcea83784b0b625139625b0690128a154069f36. 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/FR2MQ8300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257b0c1fb76203f7d0d8cf689a98d52a2b7e513b8185c2f5408825c1bc961869. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRZ988800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c848f21d8359e22db7b043a26af9b5196758ab460bf1dbfe126fe152a4d79fb. 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/FR38G8800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc310c07856394c71f234d4aed76aa64763776f3db031d86b1c9f63b3b47eb5c8. 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/GB62S0900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa018afa3c33dd3a1d321597c73f63bd1494099d98fd38dd5cbf91e76d2d50e. 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/BEU761000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12f3d41912e5d05476d5beb11e4442727b0db5252c5eb3f11e6d2f26560ddbe. 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/FR57F8632111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a3558094388110f84c5f5fca6df49bc8731370aa804fcfacd498c35e017902. 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/FRP2A8300100.
Maxis 80 : Programme 2/25 (Les meilleurs maxi 45T des années 80)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa428d3294aacbe3859fc609039113e87e277ce22dcd0f2e1aa1cee8392aed136. 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/FR1OC8700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431bfb88576223cdfb7da15bc3eb61b39ab19e89700f6ad4b4b3385b05e403e4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR6V80090549.