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 0xba3c7dd928320c9f6b4b21da70abbba86ee31335e4964d730c7746f2e961278d. 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/a069471d-36d0-43b4-8cec-158225ac87b9.json and https://artists.proofprofile.net/proofs/artist/a069471d-36d0-43b4-8cec-158225ac87b9.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 0x5ebb28f26d18b5a0293521d773f483d0d28bba1a1e461b69a13dad1ec4adb29d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:39:06Z), 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/QZFZ72026711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1105949c9c6033e5f5616f129c5d6be004977f35126edb5183150134fe8c2e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA72042452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4519b59edaa7f36b411a450ef5ce9a5b56040ee30add6d9a7172cd78f55eb103. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMGR32280993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131797d1b5f4982ba203edc136f2682e8d1e059ee56ab24493c24edd4dc1b2d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA42183550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131797d1b5f4982ba203edc136f2682e8d1e059ee56ab24493c24edd4dc1b2d1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA42183550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb962470fa69ec9a24b295eb5511b891608c5c0b45d0b1c3d707295bfed3176. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZMEN2143648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c56ed20cf109a4948b89b59069bf6f0d14cd896dd1d11bfb23f676b92dfe80. 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/QZFZ42290131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ca3179da988aa7b9c78a21320c7abad77546a28bbb7bd2c5e89c7b9f42910d. 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/QZMEM2297320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1cee841912aa0af6c363c150701ee8d17c876ed497e44c6e21550a68fa9e97. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHNA2368794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d390f144dcb2f393fa57a3855058e41bbdc141c33f6e421ff47807b52ff45c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:32Z), 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/QZTB62348400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e35664014f5039910c1e2dd227f8a37b918c40b5c97732ad11d7a211e0c407d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ662491453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7545734f240c3e4752abfb78544c27ec2eb207c683270b841100767d6077c6. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:11Z), 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/QT62U2529358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e82aebb10b1365074f6b66532ce39bca4782ca151ffcb5ed88ac2994475a842. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ32093363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1105949c9c6033e5f5616f129c5d6be004977f35126edb5183150134fe8c2e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA72042452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e82aebb10b1365074f6b66532ce39bca4782ca151ffcb5ed88ac2994475a842. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ32093363.