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 0x4bdd18a395b14eff591f77f564b2e90d5e8d6caaa697c1749eb8e69675a54ae4. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a69061db-91c9-41fa-b730-9e4f8e5c05a2.json and https://artists.proofprofile.net/proofs/artist/a69061db-91c9-41fa-b730-9e4f8e5c05a2.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 0x5d80428e84bda45189f5e5d2a70c456e61ca1e8a70ff8c47a4d27c7595ab5daf. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:04:16Z), 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/SE66N2373336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ea817bf5e77f5d5b77dde3e2ca101dd01e403ea9b39406c0248a07c1c8b8cc. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:21:07Z), 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/CALVP2492982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee0421c99052266ab370864482cdef1a51bf23ef4512707a138a339e678e34c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/CBEYJ2403619.
We Wish You A Merry Christmas - Music Box
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a570e29f501165ef02c53ce52eb7848fbc410b0ceb1c11e5e6883e51d165187. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CBF8B2411224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad032c3c1f02e505be1dffbdde61994bb9652efc0d1941931b50dfaea75b888. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CBEYJ2479113.
Under the Tree (from "That Christmas" Music Box)
Ser du månen där du är ikväll? (Tillsammans igen)
Ser du månen där du är ikväll? (Speldosa)