Nollaig Casey () is an Irish fiddle player, and has an international reputation as one of Ireland's finest fiddle players. By the time she was eleven years old she could play violin, piano, tin whistl
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59373f872e6ca70176214b44924cdcbb710c810a3882c2d1068c8ab06617fa1d. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b8f1fa4-e0c9-4fb3-9de0-898653aa8b66.json and https://artists.proofprofile.net/proofs/artist/6b8f1fa4-e0c9-4fb3-9de0-898653aa8b66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il sonno (After Vivaldi's Flute Concerto, RV 439 "La notte" and Concerto for Two Violins, Op. 3 No. 2, RV 578)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bfb1e21f9d6ab792610657cd19d48ba18b793b42eb0eb582629857c296c9fe. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR34F0100050.
O'stravaganza (After Vivaldi's Sinfonia, RV 168)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6e14e7010db33cb4f3cc82580f9a600fa44f37ed19b5faf1228b39a41e57a. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR34F0100010.
Il duello (After Vivaldi's Concerto for Two Violins and Cello, Op. 3 No. 11, RV 565 and Violin Concerto Op. 8 No. 5, RV 253 "La tempesta di mare")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77fc6f385cddb4f0c49d60ec891942321624e19c8939999244b1a8b65e60484. 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/FR34F0100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b848c130e00f7b107f25efe2858a893e60157a452c731f73218cbc97e1c75c9. 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/FR34F0100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbccaa8aedbd08ce85670fa5d073495d36aff142083104053a38136215dd3f71. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/IEDXR2000008.
Jigs: Wallop the Spot/I Buried My Wife and Danced On Top of Her - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbcd0c384a81a8de2d486b61e5a8c1548e87389327a3f5e0ef2dce3bc98c5c2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/IEAQY0800032.
Lios Na Banriona (Fort of the Fairy Queen)/The Cross Reel
Transatlantic Sessions - Series 5: Volume Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60b028871d272bf5755f035509cd09180a410321656d6eda04c39860aff2e18. 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/GBQSK1202609.
Classics Reframed - Bach, Vivaldi & Mozart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6e14e7010db33cb4f3cc82580f9a600fa44f37ed19b5faf1228b39a41e57a. 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/FR34F0100010.
Eirin Sonata (After Vivaldi's Cello Concerto, RV 407)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3e5b6c924a19c0afc97fdf8902184710d6059be9c7beb521b1e0f9859c4bc7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR34F0100100.
Estro-Reel (After Vivaldi's Violin Concerto, Op. 3 No. 3, RV 310)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1819b3a1e9faef811a396672550b2cde97b0325f24f0145340b9c1d81498bdfc. 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/FR34F0100040.
Damhsaigh (After Vivaldi's Lute Concerto, RV 93)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d6952131bd59ef784b727581b65c18254217c8d745ce2501bec53e8d08820e. 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/FR34F0100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bfb1e21f9d6ab792610657cd19d48ba18b793b42eb0eb582629857c296c9fe. 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/FR34F0100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722b67f3d9dd8b29834c01b5aabcb3e3c0af9e41007807372bf48744c978a407. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR34F0100140.
O'stravaganza, Fantasy on Vivaldi and the Celtic Music of Ireland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6e14e7010db33cb4f3cc82580f9a600fa44f37ed19b5faf1228b39a41e57a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR34F0100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d6952131bd59ef784b727581b65c18254217c8d745ce2501bec53e8d08820e. 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/FR34F0100020.
Berceuse de Gráinne pour Diarmait (After Vivaldi's Nisi Dominus, RV 608)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3577cadfb74ceecad6dd06b68db0d3c8b97d1bf583a49d9c14f2b166162cd8. 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/FR34F0100030.