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 0xca75f05ff84c10ad3babedaeaab14dcc5fcb400a836b7d4b8c084812ac45135d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e83d587-9969-4d46-bc86-fafa13d73569.json and https://artists.proofprofile.net/proofs/artist/6e83d587-9969-4d46-bc86-fafa13d73569.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Spontaneous Instrumental Worship, 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 0x3d51d9fe1768d6ae2d6967f633c26e6430d35f0e9993024b895354a5d0e77e60. 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/BC3SU2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fb6cb29c71fe28db553a60d52025d4066d769845be78389c0077115fb345a7. 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/BC3SU2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2bd18e1c38d0756682e95c63c764a172077c8d906aa98c132a7aa9392d7e3f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:39Z), 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/BC3SU2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fe7326d06897596f7954497344d15da7c8aba21fc2e1d8d06b52e9b389c177. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BC3SU2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2c35fddf5979a62e7abbc83d3d2c4576b0e1a44e4251fe1c193aa484f06ca5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BC3SU2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27d0e19d21ed324d007b95cad7519473dd92fe85b831c22c1d58e81c7505c5b. 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/BC3SU2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd861e445dbc84e7e10bd10ff3cbfbc0fd5eefba8489df12da0d1079100706a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:23:33Z), 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/BC3SU2400002.