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 0xdc9fe3de58dcadc2c492486c22251693727fad1a7f3ad110cbd92e6bb259530d. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1189ec20-f7b8-4bce-8277-ae7bb7c24bab.json and https://artists.proofprofile.net/proofs/artist/1189ec20-f7b8-4bce-8277-ae7bb7c24bab.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 0x0c0a5b6ad2c2242cad39300af2209e880142a994934ae0a991c488d4dbd67621. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USCGH1668691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12461f000cf7b122909ff8fad81f2c4830322f9130a5f9efd198d0ccf4b2125d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGH1668692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdf371b221843c7b8b74746fccc0d2b2f28ea58ebef99aa4bfcf37cd0afa60c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:22:00Z), 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/USCGH1668676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ffaca826f115c9b15924da916205c9f9ef693460670a6d0e988bb82cbd01cc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGH1668649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8f178d2a1fbe97dd1008432d6b458d4dee1b685d70cf7904bfbb1906793da0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USCGH1668653.
Star of Wonder Medley: God Rest Ye Merry Gentlemen / We Three Kings / How Great Our Joy (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e082e1c536ea01babdc8c10797a2b9c4f29c72f24315674e79ed2c58264482. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:35:13Z), 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/USCGH1668616.
Nothing Ever Can, Nothing Ever Will (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c95f32dda51486021f823b1a1bac332a13891b735928fd517d3dfce0ec9c6f9. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/USCGH1668640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05c76b79637a22e7e047fb2ba33b0d881ec4d2d4e82aea51be39bb55bcc18d6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USL6T1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296f333fd99b54ed6a17ddc5f63d29fa58db6931118a3c8c750e1b9c265bc649. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USL6T1800005.