1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6727b518d7a0b53209e6be24e4fc9104db60af20815315012fbd8bf0fe069b0b. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7a82815-2237-4698-a166-a7ab9ee09e58.json and https://artists.proofprofile.net/proofs/artist/b7a82815-2237-4698-a166-a7ab9ee09e58.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 → block OTSBitcoinBlock must exist at that height 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 0x60605105c5b143e1748f3fcb5b898bbcd8bbdbcca28987674a6830b4be34c9f3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SEAGA0027020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8e3618ef7a4d54fd6c6a8c20a2e8072c7fad642565f614317e73a180492f49. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEAGA0027030.
5 Songs (5 Digte), Op. 26: Med en Primula veris, Op. 26, No. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ff442b1107e10c1224cd84ecd51de4aeac882e53924d938059c34fad6e36e2. 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/SEAGA0027150.
5 Songs, Op. 26: No. 4, Med en Primula veris
Ihr Musici frisch auf und last doch hören
Glans over sjo och strand (Shine over lake and shore)
Gabriel's message (arr. D. Willcocks for choir)
Stille natt (Stille Nacht, Silent Night)
A Ceremony of Carols: No. 3. There is no Rose
Pageant of the Shearman and Tailors: Coventry Carol
Gläd dig du kristi brud (Arr. K. Eklundh)
Gabriel's message (Arr. D. Willcocks for choir)
A Ceremony of Carols, Op. 28: A Ceremony of Carols: No. 3, There Is no Rose
Were you there when they crucified my Lord