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 0x35cf8e3a5916efca4b5a0c34b9118ebc9b781931ef1485009f0946068be3ae6a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29073d8f-cbc9-47b3-b65a-b6c90d00a7e3.json and https://artists.proofprofile.net/proofs/artist/29073d8f-cbc9-47b3-b65a-b6c90d00a7e3.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 0x482385bd8a51a8179c58839593f3a5f00f02d66b7525b245c009b48ad368e8d3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:29:46Z), 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/FR52V0400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ea50299ae111e8cb4fb3d57df9638b29f0c51aa02e39a7b3d09eb38b486fab. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/FR52V0400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d2181bd2512c96579ed6e8cf98420fda80d4005e92098908ade3f313ee5b51. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR52V0400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04413bbfaafe40199d456e985fb7798b9520e83287b14c6bbad34cea9b4ca539. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR52V0400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b54873d780e9f91b3a1616633ab9f57c9df9f629fd240fd6fd32be37cbd4b2. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FR52V0400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942a203dc7a98d1eceeeae7dac429d6e6980c0387dcf34937d2c1a827bb672b8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR52V0400311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482385bd8a51a8179c58839593f3a5f00f02d66b7525b245c009b48ad368e8d3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR52V0400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ea50299ae111e8cb4fb3d57df9638b29f0c51aa02e39a7b3d09eb38b486fab. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR52V0400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d2181bd2512c96579ed6e8cf98420fda80d4005e92098908ade3f313ee5b51. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/FR52V0400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb7d87b029a7e57174aef1fd293477e136dd7bc6d2b07364c959f504c3319f8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR52V0400306.
La Bonne Attitude (25 ans - 2022 Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672a943fc5db25050ff501e5930b9825bf88668c5a3976fc546ac22e096ceb7b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR52V0100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca42d5dc1a7412e5509a24dce17ec432985e9e53dc802e1ab8198f59b0abb097. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR52V0100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6300b2c6cba3f2b908bfbea427e9c1f0abf19bf935443c39be73699a2385702. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:24Z), 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/FR25V0100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ab1b4ae87cc5fc797660c43a444632539ebd6253a388541838369b6108f433. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR52V0100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5ce89ae0ad1d263be9c9340d1a257d4782a2b919038950f12e17dda917d63e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR52V0200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb0774c0248824ff623873286fb9ce18827a284cd148660c912dbf6800d09d5. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:06:17Z), 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/FR52V0200520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226b57b77f26d984b1bcfaf3c77dab6b06ca44c9d78e6dcfd222617b40658502. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR96X1931606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620ab2e6777dfa8358818836ad847d7e1931a1ddbd374ce36c783c5545725ef7. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:29:52Z), 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/FR52V0200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8457a73107c98fdec4d287e523cccb0e3b6ac210671cc7de8a7bb7c7a6d550bf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR52V0400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8457a73107c98fdec4d287e523cccb0e3b6ac210671cc7de8a7bb7c7a6d550bf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR52V0400501.
Ma vie en l'air (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775e0f7e7956e4a432fd50b839bdc70ea68466ba8e3d7ad11ecc7096e46c7453. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR52V0400101.
Ma vie en l'air (Bande Originale du Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775e0f7e7956e4a432fd50b839bdc70ea68466ba8e3d7ad11ecc7096e46c7453. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR52V0400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8fd08e01d204c0b3e79e4cdd5c4888f83b27995153604f7e7d314536a5050f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FR52V0400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda796de0199d1d19981a46713710fe3234f9308005d9b10513a132e041bb091f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/FR52V2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10054f05ad9f4e6198f276ba7cf579f942c7ff5b48eb7f3f2eeeb1f4de6cd41. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FR52V2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938342adced20eb6ff1f4357eef618c337c73a043ac13f62648adc021e181c6e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:19:03Z), 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/FR52V2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77250526200f5fb266442619b99821580edcbd0f7b19195f810a8d2ddc9d4667. 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/FR6V82251602.