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 0x7d40a872a20ef4427d1dc68ed920b1122db293198fb172ae7257c8ebfce378a8. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3971ada-ca66-4dbe-b29e-d4ea476499e4.json and https://artists.proofprofile.net/proofs/artist/b3971ada-ca66-4dbe-b29e-d4ea476499e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everet Almond's Royalty Free Music For Creators, Vol. 1
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 0x9944b7824c09942544172a3e56c1249705484d45338207e3d24a6ece3e5e3433. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:38:19Z), 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/QZRP42482283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff745de605aced277731c32666ab3713c619dcb906006c25fe8cde000602606. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZRP42482284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b4bf6354250c5743148e0b1a2c2796f695e21ef328b531923dcc01db338ca. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZRP42482287.
Everet Almond's Royalty Free Music For Creators, Vol. 2
Everet Almond's Royalty Free Music For Creators, Vol. 3
Everet Almond's Royalty Free Music For Creators, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93e83f0b867c68d1540d65f5d01f5986307a48f8776523b21631f720d2c252d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA72519324.
Everet Almond's Royalty Free Music For Creators, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc80985801241973c11c306bc8848f05f2394ce38127553adb258b5f73f39340. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:04:11Z), 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/QZWFR2512787.