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 0x8a01350c4d25333b9e0ed3fd2f662bff58190339928ef0c46bf1d3fde400bac8. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70e63378-5e2a-4e07-bb18-ee76b91171b7.json and https://artists.proofprofile.net/proofs/artist/70e63378-5e2a-4e07-bb18-ee76b91171b7.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 0x9525a01b8c5088e85b2e09b28b3a088b856aa5c96e585d657b52d0eb0f371fac. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/FR59R1823066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5641e7cf5cdca8f90cb603cdef75b3faf3dc4be7947ef4ca780b7bad656ff393. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR59R1823067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160ee023a52e37ef4a9f9674e4ccbda0957b71d009bd04037b3f7848f55e8347. 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/FR59R1823068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6415a8b00867ef157c6e9ef3acfc524a5eac3c80d4d4766f32b1353a071c16cf. 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/FR59R1823069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336c1f3f65ed883c15c9e6f0c8038594f0fb2060eaa7bede6d5bc8740e7838d2. 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/FR59R1867671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bab8066e994b27283fc8bc0902dbbc4a65a09b91a32d64e865164e97d394f99. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR96X1882813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93588fcd5204d07f86a330248f74aceade6cb449e7d2d6fbdad40b349ea1cf6. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:46Z), 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/FR96X1882814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d1b129536a2b8acea420800f18cc0cf9d83654bb9ffebdf2ba3b8c28d1f148. 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/FRX201938173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2f3cbf8831130c8db183b808ba6e7b461af1755d2fd3614e4e201d073f8670. 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/FRX201938174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022de9be7e37bf52acb0996b1b2686715603926ebf95c02594a5b25cc6287067. 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/FRX201944466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012aa23dcb077b2328ee9f4315ed8f656de691b999f133588026f7f866dd26e9. 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/FRX201944467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8a67ac3ab4002263132741b747c0a598a6afdfc11fb76a6bc3d92890fdd2dc. 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/FRX201944464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3235c2932e2bde91a14a7c2cf657ad49174d7f08820fdd5e5a6203bb331545. 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/FRX201944465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844fce4b4ea11707c8d80e444c20f2849b0fd253063cc865f9325bcea3d3fdae. 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/FRX452056522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aba95e0e5ad2953016b3d0bf39feb70672fa5fa66a12fb4e675a27796ef2bab. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:57:05Z), 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/FRX452056523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc07dfeadc07bb85cdcfe99dfad1f7b1bb240f4c16c6f71b17bc52e94ab25029. 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/FRX452076484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca2b85e7fa35d434d58e22e906cd12821e3683833c9f72e1e27f568ea76c841. 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/FRX452076485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4e7fe4a795bba4fdb0ec4cffedbe0b3505326f69e5e88da91038dc0bd4c1bb. 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/FR2X42055208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afba80686c5e080fff39723eabee2e29c5c07dd2f9939a56d4a816fee2d6d1c. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FR2X42055209.