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 0x1e1bf16ba359cf1135030c3cc3bed69ca9ff7009ce0e97aa73fd32e2259d04cc. 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/730894cb-7d22-433d-81cd-eea95ccd88e8.json and https://artists.proofprofile.net/proofs/artist/730894cb-7d22-433d-81cd-eea95ccd88e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Remember 1979: A Trip Down Memory Lane...
Remember 1971: A Trip Down Memory Lane...
Remember 1972: A Trip Down Memory Lane...
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 0xd24ca8b79fb87d10e981bb214ada641acb4eda6311ce4d95ae3704e1f3d5a6e1. 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/QMVRR1445086.
Remember 1974: A Trip Down Memory Lane...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca77a475955a697fca21a8784345247e702f588bcd0749260af10d263143e33. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:36Z), 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/QMVRR1445027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41151ecc4aceaacda819f46a000d6e44f45a750dec66eb99bebbba3f50241f98. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMVRR1445030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a404d3affb73079e1654c522f5a42710c19d306315b824bd05c009cb10609e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMVRR1445044.
Remember 1976: A Trip Down Memory Lane...
Remember 1980: A Trip Down Memory Lane...
Remember 1973: A Trip Down Memory Lane...
Remember 1975: A Trip Down Memory Lane...
Remember 1978... A Trip Down Memory Lane...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a653f5107ac0ccd63f832e158f7f5ea590d6f9e030c6473c3f24722a625103. 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/QMVRR1444930.
Remember 1977: A Trip Down Memory Lane...
Remember 1965: A Trip Down Memory Lane...
Remember 1960: A Trip Down Memory Lane...
Itsy Bitsy Teenie Weenie Yellow Polka Dot Bikini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b62475d9d1772a9226f9a405e6c752d64beb6aa6c44ec3844efa3e837ebf74a. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:37Z), 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/QMVRR1447151.
Remember 1968: A Trip Down Memory Lane...
Remember 1969: A Trip Down Memory Lane...
Remember 1966: A Trip Down Memory Lane...
Remember 1964: A Trip Down Memory Lane...
Remember 1967: A Trip Down Memory Lane...
Remember 1959: A Trip Down Memory Lane...
Remember 1958: A Trip Down Memory Lane...
Remember 1963: A Trip Down Memory Lane...
Remember 1962: A Trip Down Memory Lane...
Remember 1957: A Trip Down Memory Lane...
Remember 1956: A Trip Down Memory Lane...
Remember 1961: A Trip Down Memory Lane...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5501da6992cdef85f270bce124985485634b442f7afdc8be28fe511bc5a76b71. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMVRR1447139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ab1587c031c33d615a2c2639cee125c5f040014aec95e6d4a8b750fecb815e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:35:54Z), 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/QMVRR1447141.