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 0x0ce3dc7947925049c6b83bf34488a37fc05e2418beb990fa32c1915051faefac. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/011b2739-3574-4f59-8b13-be2d2a0e8cef.json and https://artists.proofprofile.net/proofs/artist/011b2739-3574-4f59-8b13-be2d2a0e8cef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Walküre, Act III Scene 1: Hojotoho! Hojotoho! "Ride of the Valkyries" (Concert Ending)
Wagner: Der Ring Des Nibelungen - Highlights
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 0x4597c32084d094d43ef915220dd154315149da1b9a93291dd880fd4d2403827a. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DEF056630003.
Die Walküre, Act III Scene 1: Hojotoho! Hojotoho! "Walkürenritt" - War't ihr Kühnen zu zwei?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1061f56f3bd1479c7f90b6d4f09b473a6dfbc4b45c7f5a09a9495ec593028782. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEF056630041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1061f56f3bd1479c7f90b6d4f09b473a6dfbc4b45c7f5a09a9495ec593028782. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEF056630041.
Die Walküre, Act III Scene 1: Schützt mich und helft in höchster Not
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b98fe4d468d20ea417cab1175fe9ee3d4c656ea7b745eac22cb93bc19290b42. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEF056630042.
Die Walküre, Act III Scene 1: Nicht sehre dich Sorge um mich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d3e45f15af1f5acd63d5f0c75e8c657a165c7e21f4e63eb1f3c0cae7eb058e. 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/DEF056630043.
Die Walküre, Act III Scene 2: Wo ist Brünnhild', wo die Verbrecherin?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7176b878c3c5f1c4978c620da3d086bb298c7fd9718fd4dc12e75cd2cb55cb5c. 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/DEF056630044.
Die Walküre, Act III Scene 2: Hier bin ich, Vater
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f034e887b420e84e31e3c2432076fa0cb5a20bff1edb5d57aa9c0a14e20ca0e. 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/DEF056630045.