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 0x308744c2445df330f1f8dedefeecd9daddb253b63ce73b91a7e3fc217683a7ba. 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/a234d3db-f3c0-48a9-9b05-b293de794109.json and https://artists.proofprofile.net/proofs/artist/a234d3db-f3c0-48a9-9b05-b293de794109.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 0x567a5449be563c523563eaee7f42ef5c5dcefa5476a1770954e40cef9b67a140. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/JPVI01640770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9366d56e6dab4afa15d3527529ecc84ad97bdcf07863991f6ff733017e2b9dca. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:03:09Z), 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/JPVI01640810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc614cd7488ca7519d8ebefeeaaf859868537e55a290b23d9183b510672e5928d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVI01640820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cddde685addaa9bc2fdca52038e3b183227ad0c17238781739afa77c0687b74. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/JPVI01640830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0807cb95681d5ffa7bdab320495a353f3767fdf034a19987671ceb1de14bbe. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPVI01747960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136a62dcfa18d331dea3acd7d6ce49525bf5d29b8bf69dd5259449268f48c3de. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/JPVI01747990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c27ae810203f6e8422ed00b33f85cbe9b2d9348c159a366ee9d682e53ae20e. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:37:41Z), 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/JPVI01748010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095bc300c60c98e1622b62a1893f29857250c8d4d3f99db7f2d178c707cf268d. 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/JPVI01748030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57efd3cddb7716d52607bd82dbf82561952fe09556acd98593cb2fcf947ed30. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPVI01813951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb08650528b182c768783bf24d4fae53ed02139b4aa081935440146f3a41b52d. 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/JPVI01813991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9108d21c5b25d20703bcd76a97c545e521d313300e76c722bc06cc5fbfd8e098. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPVI01814001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fc2a7c9f0c2b6afcd199318b7d4af2f716b2c078a2f59113f74b343ead0800. 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/JPVI01814011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc21ba785283884c531cec3317470fe56467f6a54067dfc277f97fc8ae64a31. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:48Z), 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/JPVI01814021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb19bbbadd5ff5f4c586e676c0c6f7d1ca78ffa1a42c04a1e8f32a68e91ec53. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPVI01814031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaeef232e7233a4422b02976c1a304c81a965eeb6aa41d4cea366504dbe56fe5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPVI01902766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acbc082d2ee61ea39ab66e2aa18bdf5a857002a12ac55e805e5f5113400bc12. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPVI01902764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69cba5cc4a00e3c96a4f5e2fa5d9256de8dae8fb757209bab703ca6c58fb94e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPVI01902763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94638fb26836af22551d64e30635d00805d761265772f272ca04dc0ca4e60ec4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:15:09Z), 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/JPVI01902767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0928e2d8aeb93f43051fdf0a06f7ddb21dff339e30334fae67a5e0c913f10875. 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/JPVI02001153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926dd551621471b16e2683d414d1e72863c6e2e87418e704c93109d12ccb98f8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:26:57Z), 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/JPVI02001640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04459a58c5f5f9a39f89e4766cc31580ea15e00f3f83bf4145b9b42bc940c817. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPVI02001641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c79bef6063c11ad0e5472eacd0901e3e3dc64acb76591a1a0bd51ad7e27314. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:25:25Z), 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/JPVI02001356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cba159a0289e65990f2baa6a4ad1c2feda227bcc41e4a05ae7a8fbd07a318c9. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:29Z), 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/JPVI02001642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7083db9aee209b90be1ca447d789dcd611e3217ddd877b211d5c7f19dcd84f05. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPVI02001643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ce5c73bfbf8beb9f693f56030336fc6820d8bb756873ef75bcf248bc853bd5. 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/JPVI02001154.