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 0x00c04930d06220b569139967d6d17add0b3e99db5524940437c07871390f5829. 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/a83973bd-e9bd-45f9-9394-defdee316e1f.json and https://artists.proofprofile.net/proofs/artist/a83973bd-e9bd-45f9-9394-defdee316e1f.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 0x7dd81681e1ccbc017ed09cae0505a1b10897bce494851f98bb1edb3bd9e9242e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:02:27Z), 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/JPS801956028.
イントロデューシング・リン・マリノ (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b3ab7b0bef47ac0040899c4b75a086f0f18c6c8100e31dca73f9025c3374c7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPS801956018.
ア・ハウス・イズ・ノット・ア・ホーム (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40fc7f55f41f448122eae1a7fcaa37dce139305a9699cd0d00eb5bb1d962ee8. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:20:07Z), 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/JPS801956020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414b5788546a260d715cf51b7f9208761476570a3bc060023ab3e8947bc1d31f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPS801956023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e65c17d1ae18a81f0eb3159380a791bfb4f7e737051284a79723c1a15bc2fa. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:50:32Z), 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/JPS801956027.