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 0x269be30f18a9d2b3cf512289a857ffcd1c096f9dff99607afe7133a30142db9b. 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/bdc023d2-9074-4d5d-97ac-bcf043e739cd.json and https://artists.proofprofile.net/proofs/artist/bdc023d2-9074-4d5d-97ac-bcf043e739cd.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 0xa940ea916f9e5183b861ff47194c05e6dab4021febf956c857491dfd55e59435. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:52:40Z), 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/GBAHS2000785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de5565b0e9bd51c5f31e597839fd8307832b2416ee1398d4f7e85c68e57da52. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBAHS2000956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f33d059313313b641911545d386403d586e6b0818602504f20d629df33d5358. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:47Z), 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/GBAHS2000770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3804600c6a4a55936c08a99634e617e0778b95e966de76f72e9159969b307e3f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:08:42Z), 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/GBAHS2000958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b41e154507dcfa87692b40a0da167fd126267609afa5ac93e30181265000d5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBAHS2100216.
The World Isn't Big When You Know How It Works
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c72d89492a5d8442cf3941cfc6edec87a49392b93f156ecd58f008771862d6. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/GBAHS2200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59de91995110d11c7ac962fe1013d8aa59e19a86b1dccecd735ba0dfd8d4355a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:23:46Z), 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/GBAHS2200289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b30ab11b609e7d27eece1545160595718f8ac9d91b0226617827fcceb99b3c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBAHS2200291.