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 0x1ede9d3ed39c1a08f7c92085fd0f8d8acbaf32fa3df8f405f044221a1709f77d. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a64a19b-d795-4a6e-afff-98d4cce191eb.json and https://artists.proofprofile.net/proofs/artist/2a64a19b-d795-4a6e-afff-98d4cce191eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Echoes of Grace: Choral Music of Patti Drennan
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 0xd7a085db8c65846a31a0f0cedabea81c31b695219cb0e6c87b5a707c78445a40. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZWDD2490534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fce96f163c05bd0b4008058ee57ded2bc9bb67938ef01dc0fbe9800bbbcbd3f. 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/QZWDD2490535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac88409456d612c2beb290a6198cdb9b3c046c203a90651e57f3ab2750b75beb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDD2490538.
Life and Love: 3 Settings of Emily Dickinson - II. Heart, We Will Forget Him!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa801d7fd94089999384713464ec032d403505cf559d0d76f2867f3e67c38a1f4. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZWDD2490541.
Life and Love: 3 Settings of Emily Dickinson - III. If I Can Stop One Heart From Breaking
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ddf4e059b1401234ea473dfae19db07488aac2f1b372a7a1624281ecd1470d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWDD2490542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875154a35942a1fef7fef90b7cee51b8488042411fe3de3470927892b781dc69. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZWDD2490546.