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 0x50d7797baa611804e3ca69e8da4a714308cac9fe2898f8dcd3ac2816ee4e2344. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8836b310-d05f-4436-af9d-a73ae029376f.json and https://artists.proofprofile.net/proofs/artist/8836b310-d05f-4436-af9d-a73ae029376f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vocal Recital: Mattila, Karita - Schumann, R. / Brahms, J. / Merikanto, O. / Melartin, E. / Sibelius, J. / Schubert, F. / Dvorak, A.
Northern Lights - Music From Scandinavia
Merikanto : Oi, muistatko vielä sen virren, Op. 52 No. 3
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 0x828afa5787632f81f2ad2450880e16d5d1cf2a9801509857d181d812bbe61cd5. 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/FIFIN8100400.
Sibelius: 5 Pieces, Op. 75: No. 5, The Spruce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389b6ebe86bb7ccd58170442e07c4041c008d605e098d094afb42f1422b18630. 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/FIFIN9201100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43ae4b133284d6bc4c222d0677c3ffd34cde0d5b8d6d04715389ad5e21d2ab0. 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/FIFIN9100011.
Classical Music for the Christmas Holiday, Vol. 1
Vocal Recital: Sirkia, Raimo - Sibelius, J. / Adolphe, A. / Madetoja, L. / Franck, C. / Berlin, I. (Valkea Joulu)
Rautavaara : Cantus Arcticus, Angel Of Dusk, A Requiem In Our Time
5 Christmas Songs, Op. 1: No. 5. On hanget korkeat nietokset (High are the snowdrifts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ecc8927ef6cfe9b5cfd059cb8b1734ea70350d8f6ad91e81fa1bb2210ab1f5. 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/FINDE9600130.
Englund : Symphony No.1, 'War' & Concerto for Violin and Orchestra
Englund : Epinikia, Symphony No.2, Symphony No.4
Schubert / Arr. Wilhelmj for Violin and Piano: Ave Maria, Op. 52 No. 6, D. 839
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39063d265101b93dd02cc6f9060470ee378a0c47aaedc0a863fa7a21635bf127. 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/FRZ209301050.