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 0x2ca89aef7472802cbccfdf43fa13b033345ae9e32b1002cf038fbead7769bcd6. 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/db80f677-c979-4786-84b8-e449b2aa1ace.json and https://artists.proofprofile.net/proofs/artist/db80f677-c979-4786-84b8-e449b2aa1ace.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 0xaefae1cf89a2b2a2b0f6af348e012ed04c8ded52d61724f904693abb2ece3bcf. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM4TW1799476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b86e918d78f3aecd0e6c45242f72c5f62de548a6c48fa2b3e625d023989bd82. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/RUA1D1810832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419038a188f64d9d2adba3aafb2b9f7c491d010a570284e9af3f08b7eced6472. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:00:13Z), 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/RUA582104026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbbf20a2dd92896b6e2f29c78523e920122079435ddc74d78ab116de0463b1b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX202189680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267d30114ee14d6abdc9c22fb727490b323a58bf383b32887318a2359f474ade. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RUA1D2175554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec28a4bc74206f0467a77ce9ccf653c9fe74d2e65335bda499f24bc38d86fb31. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:36Z), 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/RUA1D2339511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53da09f5b8d7267f8de44010d21706f9cbb311e4481ddb49be19fade03fcae0d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DGA072301097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0309b7fdb004641c69661bba98d7ef70408b8f88ecfcfc5ffa5c08a03087f8b1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA082332790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151fabea90e70ec65b1c1ed395a20c318b1f0e38c483b8ee4e7c7243dba606b1. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/RUAGV2304235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85279b3fbb752037875b01a5820356470bcf22f800dc8727da7d585e20031545. 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/DGA0M2377671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe922bbb42ec593a3cbb9a19dadd257febdd9b286503ae6dfb6b7f81771da7aa1. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/RUAGV2305655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f059bca6ea033eb0ac5ceceefed37ea391d8e92159e33a2b3ffa85958a383d. 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/DGA0P2386019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdadae56bdc8f8488c4fbd79b581f494d5b032945bb292dcef19a000645bbd48. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/RUAGV2400979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649144a74424f1806c6f1bf7061092ee2e024fbe0ecfb9937b202b0ac283402e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUAGV2403172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f590c677def492ed8df4318437a92f3e11e4f82d7d4502feefc1edfc68bf01. 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/RUAGV2405059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568ee3db48d3a44707a8a4a9070c30a266256eb6182c71b81648caa909e7164e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:06:13Z), 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/RUAGT2423550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97331af009393cbe0ad69af41cc151f5597172996e48c96afdd8907d2a64241c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:30:45Z), 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/RUAGT2437097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29bed8d818cc1ece2473eafaea4c881ce608ae52b39883473b1f6593b2e00aa. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:31:27Z), 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/DGA0P2442508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda6343a2a932881cddee5b13eddc182dbdf4a9561ea0325a17e18b719cc7778. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA0R2414539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba14261ad5043652fbc60dac08913e61413a2614065cd02b151235d309ad3d7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:15:54Z), 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/RUAGV2409807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407f8117b155abef4bb50e4219c6b7271745a5821ee24e9d6ee8e3cbb98e3fa4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RUB732075247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37131468326303cc37fda6f572692663bb80a1d40ce650988d0f0cb936195bd6. 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/FRX202570568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6c92c12774d64a04b5d6fbc53482a431bb98b28db3927e6c6a664f9459ac4e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX282507155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1248d4a4ac787c4cdea5773db99261850585fc5df2187b181f6b9980940ec7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUB732075235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c07845d0eb6b298fea5678d0023a500b30d25632218bc3210565f82f07ba19. 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/RUAGT2501601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063b54ca6c2a6826c6f7c4819e3210682a3ad8ea568c383c0d93e253d304a53b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:42:39Z), 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/FRX762528387.