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 0x7b081225aa6db12967ad61bb174b85df4b2450e107c36f1118af2a706ad1b2a9. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76c1aeee-a21b-4de6-84a5-dd4fca4a9aa0.json and https://artists.proofprofile.net/proofs/artist/76c1aeee-a21b-4de6-84a5-dd4fca4a9aa0.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 0x179f8f379d64195f053182d546fbdb18157bd0af01c387c8b135592c464bddbf. 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/SEYOK2225049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc918f93cc73ff945dd540cdd53d307c6f89a07db29618cce05512c11e7565547. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:51:53Z), 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/SEYOK2225052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f52c7b95b4e7311e05194b0922c4d7822a883092aac7d67411c02f235b7f75. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/SEYOK2225054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec6cc00157f467b2c7168377a686b9693078292fae03ff0e1955b4d92c26a0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2225055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f39621a79df4454ebad78026273e29a74718138a79171d59cca8e47bb0b7308. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2225056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ffd39e383808ec1c76c67081e89a6284f9f84c5da5931849099a5636c1f98f. 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/SEYOK2225057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59f2b110c62fc05671574e4647b2a4b0b122047c82cd43ee7dbb3d57b2ff9fd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2225058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6737e882bde23d4604dacb62a83e6abb4c98809ebee70ef50a815d68d5e1b390. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QT2VB2465290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818f4c142ad811c2a2ae3d187a5aaf89ed4d2d79fe7802a8f3ef052da971421e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QT2VB2465294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3808979c6abd681c7f696caa4d87cfd158d06a00936b8cc72caca7a35723d1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:21:20Z), 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/QT2VB2465297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476511548271d5659af3b465bfdaa1726ced627eb8c1ac6138b37b30f2091c9b. 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/GBSMU7842317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb52d25fe4e4a14612a474d2172d8872247d5a4dd3655402b7f26c4ae8b8aeab. 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/GBSMU7842318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5a07480bf55052defc474d4831bbedcb0728911302abf0202a0f4c2228e735. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBSMU7842319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c722b1e08af6a9afd5424449cda81bb5977c14fdb6855ba20f8b8b3892a6af6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:16:50Z), 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/GBSMU7842320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f3c50d9f9251275f66e94c5c0944e28ddc1b253d094b26f6139a96ae1c8caa. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBSMU7842321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd300f6b6cba9035d3631047ab1399431e59d8e066d5225bafb1625296b6725. 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/GBSMU7842322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6e49641605e19b23904b8c508453f4ef86d731e492412bd087c56ff71c042e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:06:11Z), 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/GBSMU7842323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3de436594004f9e5310dd357f766f499cd3731fd6f774f47eb847975e35d930. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:47:43Z), 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/GBSMU7842324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941219822d00d1f36467f2ec776352d264a57ccf842e72cf9eff36d234e5cde5. 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/GBSMU7842325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5332bf5b9616ebc422668086c3494b8d785e24fd7aeb860ed71b90464f4ecf. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:13Z), 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/GBSMU7842326.