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 0xcc21308e6edf643f1ccdb493b90438cba88829ec969894a318e8d048a4043272. 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/ee876133-6ca7-4196-9aa4-bfec584bea2d.json and https://artists.proofprofile.net/proofs/artist/ee876133-6ca7-4196-9aa4-bfec584bea2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les trompes de Chambord (Musique de vènerie)
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 0x03bcc14f5b8290bf5fd3f27d5d04bf8b928b39991b075099de53ebdb83f0d341. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRP811200830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081a699c48673e86a77ae0bce391d031d74a449381ee3dcd6738c3f02ad001c6. 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/FRP811200840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c703fb45d82692594b02b905f1833fa2f8dc7cb380e48da2346950b0317122. 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/FRP811200850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e2c88377bd33d0bf7f3053cd4f57bfcce6b616973f0b74a89035a8c69d6ca6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:44Z), 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/FRP811200870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac1c56d879b9a29458d5e7784efe08806d05151cd2db331d4742339d3fdbef7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRP811200880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de0ab416c766bc9b5cd4a105ee4d143e60daad2345469a09776e0626b9a3627. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/FRP811200900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefb122089769803d4cf800ee5bfac7db5cb62fef52944906ff43d38f94a0610. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FRP811200910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f65cf93c47a63d14f5b6d2330c4e295d1ecdb6e1f3744b436f144df9bd7ba0. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:07:05Z), 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/FRP811200920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6df59ccae3c4a3fac73bca4abeb11a5ca451c57cf7ae27498b50ee857b1c3b2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRP811200950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70463a30ad111a9fd02185493b545df9bf8615a794070f737f2694466201d9e9. 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/FRP811200980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21284512cfe49a3bd138030c2c033d69076345ae8a47c167c4699b61d7838207. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:25:26Z), 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/FRP811200990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca632e06dd71e92b3976d6d3036d38ee47cd5564555e894eaf99011fce19a972. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FRP811201000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8ecaad3c19b04728606f25b946fa224cd3a60551a7b9328e6fd940b8c9df1c. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:31:46Z), 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/FRP811201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd39f31f28bae39e44a8af124c06ef47740b7d139dff6968b9ff5b5540a1f69d. 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/FRP811201060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe3e1ba50c4b8b5924b4c4674cb1ec8af9d293ee6e7e84c686e2e406a1e5225. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:36:13Z), 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/FRP811201070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25012d3755012941d20a346b833f077cdc903887ee93ae8b70b434bcaf75f58. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRP811201100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43e2facc88610042cd0dfaf8faee54df2a973227210ee64ca398c48f51a2211. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:21:43Z), 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/FRP811201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cab37542a12e685d5e94b35610b34160411d523be0fc4230ffc00bf126a18b. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/FRP811201160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac44d2f25d50005cd69713888f6cc3faa69c317f541ae6e15922d15bc19034fb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:25:09Z), 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/FRP811201200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc68d1cbad2d9fb6763c782759a33da047954b711ad329d373e915a02d71a50. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:21Z), 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/FRP811201260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba84053fca88903516a08abbc540f1f64bf15e8b32c457bbb973842a1f09c806. 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/FRP811201330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464c8897cf11ab29c4ab62cfc2d1fe84f2114a3c89dab1212473c394382ea4f3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:12:25Z), 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/FRP811201340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e0e5e723bd5c011032af0c57a0a4b7a542d1ed8a260301048f086a080367ac. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:27:42Z), 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/FRP811201360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4e020e2189d4564172e4fff226bd2c1e376e855fd1d9891c4ef302b860ebf6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:49Z), 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/FRP811201370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd76f1e03730023d430d2b14f597b6271514451225e2969b3448557c7f2ceb8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRP811201390.