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 0xef97b3ff1c028bf988269b89b05e258dbb8dbc7fadb05abde28a10daacf96b91. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fead718-4587-4a7e-9628-1b813c9a154c.json and https://artists.proofprofile.net/proofs/artist/5fead718-4587-4a7e-9628-1b813c9a154c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grieg Piano Concerto - Peer Gynt - Holberg Suite
Piano Concerto in A Minor, Op. 16: II. Adagio
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 0xe9b5b09c3d5c6320ad3674482ffb4b0ff9b9e0ba91f72532a4e10ebc3dfa2970. 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/USSJ10805452.
Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8de8b70eb9b0b34521b4fe01051752c750c672b3206915bd58cc12e74f53ef9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSJ10805454.
Peer Gynt Suite No. 1, Op. 46: IV. In the Hall of the Mountain King
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1859dbf9945b0aa48b6a35cdd8e83c509e64bae1be482d997279c6247061a934. 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/USSJ10805457.
Peer Gynt Suite No. 2, Op. 55: II. Arabian Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5568dd754dcd15f440171dc0512eac6d8a74d23ab4f180dbc4a5a61c5ae2f09. 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/USSJ10805459.
Peer Gynt Suite No. 2, Op. 55: III. Peer Gynt's Return
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cd3b1ece2e6b79b1dac24e647d75168bc3b4b13e0a27b1e216e4969f448a52. 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/USSJ10805460.
Peer Gynt Suite No. 2, Op. 55: IV. Solveig's Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3670dd465ece0ca8daed23add8ab2f655abdee770f4ea113cd580ec7b1edaae. 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/USSJ10805461.
Piano Concerto in A Minor, Op. 16: I. Allegro molto Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d185db7faf4c4ec85f57711ed5d5a647bb841079bbacdf4623e402d4cac757. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USSJ10805451.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Piano Concerto in A Minor, Op. 16: III. Allegro Moderato molto E Marcato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6c595e64bb9eec02f9a1933f3e919d045739174c6f92a5c1d5fa4dfb144172. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USSJ10805453.
Peer Gynt Suite No. 1, Op. 46: II. Aase's Death
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2674ef8716f4f2a75a4ac4fff0f4cccc87fda868546855cb13cda14db5a8d0f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USSJ10805455.
Holberg Suite, Op. 40: I. Praludium (Allegro Vivace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9925de65feda55e976fb00b1a6e70f7ada6759c0567986acc0cdcc0c8db4ea. 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/USSJ10805462.
Holberg Suite, Op. 40: III. Gavotte (Allegretto) - Musette (poco Più Mosso) - Gavotte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dccb46ffbb8968dc478bb1206c039b020572834889254b438ff669a681f053. 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/USSJ10805464.
Holberg Suite, Op. 40: V. Rigaudon (Allegro Con Brio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5978a8328d8bd6d6722a173efd89170b78de0c1461a1c506fc585b5582f32367. 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/USSJ10805466.
Holberg Suite, Op. 40: II. Sarabande (Andante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77149301e4437149a3a0e0a916a88c8c9df6d1439c503caf05ce992bdf811096. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/USSJ10805463.
Holberg Suite, Op. 40: IV. Air (Andante Religioso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedaaa0248a1a6f4bf256633ed743da1d33a23fa495563374eb82e880bb7e3de. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USSJ10805465.