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 0x5eb2b2324f0adeef5bec04a3daae0eb076bbfdd539eafe713e974c20721561fd. 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/6644cd8b-637a-472d-9f50-c6cebc6dac91.json and https://artists.proofprofile.net/proofs/artist/6644cd8b-637a-472d-9f50-c6cebc6dac91.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 0x6a297de0d35b66043639bcfc4a18c0fb8d37735a3f90044f4b72c9f8506f0f88. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:36Z), 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/TCAFX2102938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad96608014f7089bf6395ed20f97f24ef299dbf7e33ae3288d54146ec438853. 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/AUGBT2321853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412cfffc996f5f975b5952b15f5be39864bf69d26a73ea4539049248f0f60a76. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GXBLP2401032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53595e2c6e0b9a5ab1affdb89275dcec66290ffcbf13e259053c2ee88900567c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:58Z), 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/GXBLP2401345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020eee3afc81ea808ec8f2a2053cbde92f4234ad321126a43c3cd5e2b28beb5b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:44Z), 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/GXBLP2402084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4562a9ee7c42ce18f1c559b309d18a4af6e86740ea6637fb3d5a0a05661c0b9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:40Z), 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/GXBLP2402148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8499e59c5028c340927bf5bc0a22cfc64a1a4cafdbc4bcd4691c4188f791e982. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXBLP2501255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a4cdc107691ed713c44ab9fa38f7fe55c5d87f24525cb7ff6d289a6a6f8bc9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:40:38Z), 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/GXBLP2501272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e92b23c5dbc59fcee7a2d78124ed81e3c540ca2db91e6ab3b4c361f08d778a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXBLP2501274.