thumb|First edition, cover art by Bob Eggleton A New Dawn: The Don A. Stuart Stories of John W. Campbell, Jr. is an archival collection of science fiction stories by John W. Campbell, published in har
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 0x0b680116ca79de8332547ed9c9cf6ab372251be46d6b8c20a898e885e457dfe7. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c3b0559-f5cf-460d-994f-ef060d5eb69a.json and https://artists.proofprofile.net/proofs/artist/4c3b0559-f5cf-460d-994f-ef060d5eb69a.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 0x2d45661bbcc18e60a9d47bfdd6cd72a269bd19868162c6a39f9d1944fa6c14ec. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:20Z), 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/QZWFE2352994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006c1ce1006907d19993fd7d4cdb3cd5267905851dd2f418411c030b869bf3fb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:12Z), 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/QZWFE2352996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dcd8e1291f9221387686d540093eecc4345c7eb7b89fb4c3e556f9c92250de. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWFE2352997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197cb5923027083d2a204606838f6b4ac33a545bae5609a93bafceb532cc1b97. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:22:34Z), 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/QZWFE2353002.