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 0x63944f811d972be44f8a9dc0b56da42afd941c14d3dbc5e54aafe318833cea2c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4dc4751-4408-4733-ac13-f8a868970cab.json and https://artists.proofprofile.net/proofs/artist/b4dc4751-4408-4733-ac13-f8a868970cab.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 0xcc020e2ee01c4488e1a8ab1b430326be6abbf5c0c623a968c21f94e71ffd471a. 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/DGA052431844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ff22dd13b24158c0cffa7e070638ee7e176f75c0b0dbb792c206a3af676ba3. 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/DGA052431845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35004fd461731fc4621a9567a534742a54ea036ccd1d0a898bc80fa4cffb9404. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX202414480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81a4b24c65d252cf53303e58f556661978ff70a01583b605e41b0543ce9305f. 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/DGA052431846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed7636e1801ca822d6e3b19e13a19202c012e55819bc6a9b7c24259755b16f7. 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/DGA052431847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0040b62d9b5f45e2b872a8c8ca948f3e57fb38048016c8302de9a682b2778391. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T16:26:44Z), 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/DGA052431848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c32f4d64f1c35ee63e276a34ab39e6fae3693a5e1aecbc5aeaf81b79185186c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA052431849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e54eb1943a9559e55bf5b618ce96a612da63eb74c840555c21a0e6394bc4102. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DGA052431850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a763b8b5e03be155807f7991fa9d7a2dbb278d3e55605f4075a8fcbc463742f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA052431851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa67f4a06e81f538446cc6e93a361f8939c2600911c6c0a98ddae2d36cc5860. 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/FR2X42441918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba23449721f0f1bce07afb6f72bf7c271c29bfd0c19f72e67fd7adaea481836. 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/FR2X41735915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dffa4df3c53ac134f043e0d4fef8a3dbc01f426dc32b90a5e92bc1449fc18f. 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/FR2X41735918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cd729ca08c0c77581d88f17137824ce1a093bcbd459a8cd266dfb1f54822d4. 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/FR2X41735920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642b6054f90be4f781658b836d1d94c58f2df3db2040fb61297e94b8caf3fd68. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR2X41735921.
Le choix dans la date (La trilogie : 15 août, 31 décembre, 14 février)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e60069d8aece1d254a9d6b21b56f851db5abc3a262be1df0f52cef51c4c8f3. 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/FR6031501020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7523c83cccac195e77884bbc58cc2a50782fd54ac7a1480eecd1182e2de4dd96. 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/FR6031501070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2438e8d21a6225de921b2a5b50fcf0b4285102dacbdcd2d56e239dd7a1259e75. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR6031501090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e79128dca827bc81570b6982bae33eaf83c7d3e576df10e365368c12625754b. 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/DGA062486285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce975dcebb183fb4953d3edeb7a1c7bfd10bb641e94a3dac94ce36b5c80c2f5c. 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/DGA062477484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35004fd461731fc4621a9567a534742a54ea036ccd1d0a898bc80fa4cffb9404. 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/FRX202414480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa67f4a06e81f538446cc6e93a361f8939c2600911c6c0a98ddae2d36cc5860. 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/FR2X42441918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c409657d7342dcf8e0c53168111033cd7dfd128234bf80b00a3cb2d563a4987. 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/FRX281975915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd94ad67c273a9f8e8ed3af19ef37f805024d1bf4d373d2010ddc394421b86fd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX281975917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2933c503055f1773036c9a21c77b3f149df4dac61f4382eef539ab8d9ba80acf. 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/FR6031500940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc9d2d72160c0c4708603ac9626f3312c747ff3c8110f5b4fe1bd2b89f53c23. 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/FR6031500960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe426ebcf4417c7af201a97e8ffa0d28550d7fdd36c82ddb4d16e02a8dba0f2e8. 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/FR6031500900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9a6e7b0c6c5833e426694d06960e3927f2f003447b41fbeac8c2f58ed86301. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR6031500920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c85a7ba5fb6cf5117e984312161031bc4b218314ff4a23801dbb0e8b5b2be7. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FR6031500890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596e792be1fa13fc36cd145fdf70f9821327b737ad78c061bcf3f04ebdccb0cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W11616315.