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 0x1a5183c5bd0d406673072b6d40da65a2fe2b71bb9ca01bb778d36e06b11b6c35. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec3d2f63-e5dd-47df-9ec5-69477e56abe3.json and https://artists.proofprofile.net/proofs/artist/ec3d2f63-e5dd-47df-9ec5-69477e56abe3.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 0x37e1ea8a94d40e8f6dc674907c6132de42d97c0ede988680afe338354a2c109d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:45Z), 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/JPA961780019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570953e14e2baaab3a58a0e4fee67b82d2063db4ef71fe0eb5a624f86d8d03b9. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPA961780016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e9b375721deb9e164de8d339bfb30d393b7af570b8f8d76407659c34710af8. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/JPA961780018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea490bb01375a580b085b403ac404487421fead0563b808cd5b0037b47c6e9d5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPA961800105.
夜明けをさがして/さよならともだち
ときのほうがく/ラッキークレイジーアワー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52355267be5dc3be8eab42d0a773fc612cc24c9bcab8a322f60b25355e516ec7. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:33Z), 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/JPA962000110.