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 0xadd20b8a3d156b3e2f7b47b5abead55eaa72987710bb6c34d6338808986c5d8d. 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/d1a5a119-6c7d-47c2-abc8-4b65f549bbb8.json and https://artists.proofprofile.net/proofs/artist/d1a5a119-6c7d-47c2-abc8-4b65f549bbb8.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 0x8d42d662b38d33b566fbef0268140fd3e8442f4b9e304e0163ccb08a0f3f8f44. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEPI82510819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95af29146214911431f4d55d14122e4e02328f9f25736e70331221a3b322693e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEPI82510790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3954e7d055d762521b9f3686b5002b223e96ec0c88c0865c5437bb273976b8ca. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:42:02Z), 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/DEPI82510804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8109d3a394ad4ef4e6477b8b54e0d538c4b74bb708a06c58371204b2206ab67a. 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/DEPI82510805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720a84498af8eb01c0e48eaacba4c0dcd8b00cc6fc7bf591009979c99db612b9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:59Z), 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/DEPI82510820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c5995ba11e7512b88a9a9a7cca3e39c8f4d9fce02bbbac78ef3ca3609392b1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:06:57Z), 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/DEPI82510821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ff44ac4bb2a115494b4c65ad03b44635f13292f2f16ae0a3ead20d88c37a16. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/DEPI82510818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c53fd761bdee84d29dfa846acb8e122a7b3111fadd7063b6a0883d75028ebc2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEPI82510822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885503999f215e8dea28dd0ab125bf826bf3ccd3e79b7c9cdb5f57a81cd70dd5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEPI82510826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80dfc2972435d6b9bf8760611067432bcc7f57463db957e26e30a663274af77. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:28Z), 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/DEPI82510825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac3c3756fd75efb0c0525552f9b897d44d5383644c8879e8ae1977e013fcd14. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEPI82510823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ac05ce9e638d67805157361016097d15003abc0a0477dc65b5e061544e7f45. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:20:56Z), 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/DEPI82510824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f3a550680d9601b113d0e014a1d1720e087907f8f9fd0078be65f50a2b493a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:18:50Z), 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/DEPI82510827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd0104203a3133186b118be4181908b14b0cc3f4a60a9f0b527a93bcd36b513. 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/DEPI82510831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9a82f005568f72f5435406053350d198c00743f1d811124bd41f507396742c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:44Z), 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/DEPI82510828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e00d570c9c667a3e0edd3bbd740e3cc60d4865898aa6ebd60ce102d81065946. 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/DEPI82510829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88031c50b2f318000b69ad1b5322cc4945b2fa392e13a697b9252e9877eba6b. 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/DEPI82510830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc689584df3a06f68a0a9fadaed3d8b7e19a16d2e0cd349585ddb0c7424de18df. 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/DEPI82510832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3060043b950b3d7d9ede4b3eff251b014f8b59b789214aff0d1cb597cc0b71d1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPI82510833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455bd6f519d7096e83d4edbb1ad509b9449a0e9ec1b3dbed8f45aa9356e4b4c1. 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/DEPI82510834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adcad975c9a10b729ab59e10917d237807525716b229d324d7caa569cb53ed2. 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/DEPI82510835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8094b6b4a35dceba5e43ada50c8d8d7421ec0e73c26b44aa96af5384b10a82. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:53:17Z), 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/DEPI82510839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51789e9b78cbe0cbd6ce7d45e9fdcc01e65c3d90886c889254725caf93b51930. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEPI82510838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6731ff4735241055fb2d91499ab400e574d4a2ee091c1fba31e2b4655fc33d56. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEPI82510837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9e1b5cb60007524583e91de6bdcd16d7cd18a2ddea4f544da27e9516fa68b3. 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/DEPI82510836.