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 0x553fe53582ec9f8baa7ea78cd8ada737004f0067e2f09cc57a68aab19c679e7e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a2021db-854a-4edc-8719-15e3b197dd74.json and https://artists.proofprofile.net/proofs/artist/3a2021db-854a-4edc-8719-15e3b197dd74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Das Rheingold, Scene 2: So schirme sie jetzt
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 0x96299ffc781278e1453ca008516af50afd9a285533fb2ec64c3bd9d8b7fa461a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEF056731416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96299ffc781278e1453ca008516af50afd9a285533fb2ec64c3bd9d8b7fa461a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEF056731416.
Das Rheingold, Scene 2: Du da, folge uns!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f78a30cf247500744463b6e641005ae3d76f968fcc8676aa32b9864af90fa54. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEF056731419.
Das Rheingold, Scene 2: Schwester! Brüder! Rettet! Helft!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63c0480b14196673f872fa45fe218e7b3f0ce5f211c701e728137cb7711ea85. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEF056731424.
Das Rheingold, Scene 4: Gepflanzt sind die Pfähle nach Pfandes Maß
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86a3b4830da8618c86f1dd844256b7ececfa024fdf4187d825b5b364edd0387. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEF056731439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96299ffc781278e1453ca008516af50afd9a285533fb2ec64c3bd9d8b7fa461a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF056731416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f78a30cf247500744463b6e641005ae3d76f968fcc8676aa32b9864af90fa54. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEF056731419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63c0480b14196673f872fa45fe218e7b3f0ce5f211c701e728137cb7711ea85. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEF056731424.