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 0x3b4e557bc9d9343535ad476c5389546579aef2e10ec4ffc414cb1465ea924204. 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/678d94ef-432c-4131-b388-68366ecfcdf0.json and https://artists.proofprofile.net/proofs/artist/678d94ef-432c-4131-b388-68366ecfcdf0.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 0x353b4d226c0e48125f367ba7677ff65a6cbe09d5a8ffe437ada5cc01ce7e6a3d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX281929476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93e3fea3560801e337b4c46ac378b01262751be6f654a891902957752a59204. 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/FRX281909396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feeb49a51d3f3a09d136c3dbaead70a62350796da837580f35711856e4e76c6. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USANG1916581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd86c9dbc94657555c6b2dbc9c22420f6ff170680e5e02b4b7035344236854b. 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/FRX281920695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdfae05fce7b5cfdd8942fcab80499f9f1eb5dfdc07248ab4c4d6e22e78e1a5. 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/ESA012034285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5221fff2a7c976622f058db3f8fcb6def621637258b82e45fb136d87a6138d1. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ESA012034282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264cafc368238a00fe943497315713437c2fcc079792e7b11ff2d1dba081ab67. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:12:36Z), 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/FR96X2039550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded4835d1c7cda5b367f7dd45b100cdd82d51aa632f9ad062570276eda57efb6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:20:58Z), 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/TCAEZ2078816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca3d18be8a94b8b804fcbf0b243693ea163812072373a20963f8d269a7e5d71. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/FRX202099253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552053669be3142db65dc4f07fb9c186b84f8f66e82be458bd007562d1077b30. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:36:52Z), 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/TCAFA2055109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801d2a1c6a08cc1331405314daccafc2157e9ee9dc63f6cf6e47d535a3593011. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/FRX762020384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb7d676f3929ac7f451b683432d00e3e6fd93be2d7ac84c3b0981da30d69989. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/TCAFF2011744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a49c058e34e9de860ce4f3d89ef0ee80d48e5a8304fc84388e5382c63debc79. 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/TCAFK2143896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddfa4380849a6567db26971668c657ac14c9419c1bbd9b055117130397929b5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:18:27Z), 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/TCAFK2144021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ade28db5336f3488096d35b67c86d1422827a05aa586eebd20fc6ef18bed43d. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/FR59R2106210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025ec7a7572cea8106acc4e256abbb23db37ed971f230509b4e26a66452a69a5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:11Z), 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/TCAFR2174422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a68d50790d0c0ae55ccfa8d63466f4e7a053fe1dcc9247fc8a8944cd1043ee. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAFW2134204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351b8808217ebde9388315510d4b687ca33c6c73bc7f471096927c625b91bcb9. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAFW2134016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f888d7c2bc9b555d11b913e77678ac34bc4b9bfbbb0fd5547eb95f42736c8a. 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/FRS182142682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc147deaed0f878420875b3f07471a02bfa3e3aeb4654e68014d3045223f62486. 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/QZN882202533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc840a2ef03401f629d87797edd339e0e1230d06b8e20ca38ce3be002dce779fb. 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/QM4TW2297256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b158ffbb354b518278eda286c37ddbf68a760b59b48c55c5a7ce0cd551d881. 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/FRX762274095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2e56f467c4d1c2acb21fd71ef4b1c7a2dca1834474cea22d82db891d198aef. 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/FR10S2399391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a7fa73d9640fda8de189bb48e8ac0573d9a7445752637436124a221364c34a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAGU2320024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc6f04b51270f0ce6c054647039c2c8388595fd852143025bf0ce14f446cb8a. 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/TCAGU2320336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4c7cb1fd8353c697e0c1bcb0bdfeab505fba8879d0896aeff986c9301b9cae. 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/QZAY42300641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b24e26070df2f4d4c9e728240658016f53577e4c1e26c622e4bf6f1a0bb662. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZYFZ2360948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83f900d4829264f8692344be3069ea98d88eeb46e1b676477dca65b4645065e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZYFZ2384102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dd9d8f8009a0c627097a1d7b8995448a8b8a69e070c12004c46cd98bd7ea27. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:45:15Z), 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/TCAHP2371984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a8c5a476c8e3b7a6bf5b5a84b9c5abd8404321d32a289b372599259805990b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIM2446399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2b80ca019e3444d379254c9c3cba3796d2e1380508951b6b46bb1bbae99d9f. 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/TCAIR2468037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c393b8b09481df0967257129dfefbb24579087e022e6c7338b429dfe7eca78f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAJR2505719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fac78d5ca723be1213de84dbc729e46ba3f330480bb0cbbd2d613b69670e69. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRX452596486.