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 0xf7a6c6608d6b6744e88e60edd7bb4d1ce9e1a62ce259a033d459df1d1e81d65f. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f463d27-8633-46eb-9eaf-770b34382117.json and https://artists.proofprofile.net/proofs/artist/8f463d27-8633-46eb-9eaf-770b34382117.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chansons et musiques juives traditionnelles (Traditional Jewish Music and Songs)
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 0x8d1c022b8b511828ecfd88f6401ec3c74db4879e11e497fed5eac488f926dac2. 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/FR6V80094183.
Chansons et musiques juives traditionnelles
Jewish Music and Songs (The Best of Traditional)
Jewish Music & Songs (The Best of Traditional)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cbb2a681b02ddda58ecd7d1b0338931e085303d0007f467ddf1cb04af49d43. 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/FR6V82239686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d3628634cadfe3412f93fdd5a985744b20a43918ab14d631f18217d3b4c653. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR6V82239697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654b5899b3222d0b3cf3dd716262f1c77bd46e14aeacaeab75d43af6d40ae4e0. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:53:53Z), 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/FR6V82239702.
Jewish Music and Songs (The Best Of Traditional Jewish Melodies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57702b1c09ca2e3f9bc8c19617c03a60a82d11323c2754a350308484165cb6b2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:58Z), 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/FR6V82239664.