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 0x2b7c6c7e6a11e65b0866c64d343432ef901e030db6cdc0e00601c709debc9273. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/864205db-d83b-4151-bcf8-69c7477dfc8e.json and https://artists.proofprofile.net/proofs/artist/864205db-d83b-4151-bcf8-69c7477dfc8e.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 0xe4e3748fabf8e7faab6ecde0128dff05c91e627713db033d0cf1d49ee435926f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWX2505951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaff5a1a02829ad3e51730085db9834d0dae6e89b13c96b4311df06c7361544. 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/QZNWX2505916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb495db38d0dd610a4a4fd70bc530132f52bd58c332a3326bd37c3ddc66cac3f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWX2505950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591021cd56894f59261ea3cedc41a181764076167d42f10d0cef5f94e03e2b53. 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/QZNWZ2513309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bec0ceb67540aa132abe6e560336456c3e7e0afd97f493229c2234bd73fb4f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:04:51Z), 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/QZTAT2527083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86ccf58614ea3a3bcb9b635f8e98245cfc6287abff5768f2836d8ccefdf6fdd. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:44:48Z), 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/QZTAZ2540797.
This is my World (Artwork by Elise Mosca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a76617a3c2be964e1e3dbdbe5bde02b92261307bbff9bcf28d2426497d5cba. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:04:20Z), 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/QT6E92559944.