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 0xbffc7e435a51d285eeceb6270ef045f108408936a1b2c1d8982715383e9b1a6b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/489b8087-a567-4224-93c1-02d0eafbb1c2.json and https://artists.proofprofile.net/proofs/artist/489b8087-a567-4224-93c1-02d0eafbb1c2.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 0xab2537ddb69fc60029f7ecba8df3883050b1f21187b0d665be462c2cd8db0825. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:00:47Z), 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/EGA181427845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c093b5cf95af6ed896b9de21328b021e75138424a8000dec57dd2dd9f71a649. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:24Z), 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/FRX201617610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a9a2a5be90ef385ec7207e5cf9420aff7c5d43b4189650f27aead1ee952634. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX201617613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f127d1d2b0dbdf65a1e3e59546d8ccf7d1c1312bebe920bb1226e7dc2b5f2b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:18Z), 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/FRX201616860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ad68b7a9d9b1ec4e24e4577a9c254271541c9c33ea58807340e5af1f6cd925. 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/FRX201616862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6ec5d42173285c478347f8dba5041071cb60fd9f2d6d2d6d5cdaf36ad4511f. 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/FRX201616863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c180b8bfa22603f354ee6835d436df4c2f10ea681238975b2f2f4e6bd063a56. 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/FRX201616864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178050a97e160a21728b892fbc428f50d8f3f1d99bd2aac2a256600d3fa6acb4. 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/FRX201616865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f0a64c666da67f71f72662f18203b1ad74db27301eeddf828d883ffd7b4c13. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:55:00Z), 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/FRX282272073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf299d1c3c348de79945d7a669295f687b7732905f5bc4cd0c176552cc0276c5. 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/DGA062446469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9d9cc8a7e31655f3938ec1b22dd986f6d74418094f0a486c1692cb3bc12a15. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FRX201655492.