Lasairfhíona Ní Chonaola (; born ), known mononymously as Lasairfhíona, is an Irish singer-songwriter. She is deeply rooted in the sean-nós singing style of her home on Inis Oírr, one of the Aran Isla
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 0xfc1761a1aee3b1f20c6071a70af11e7913a6e127ca5f5b1e2c1e4ec79fee8794. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9244526d-1ed0-4ffd-9e11-57c1803a28a2.json and https://artists.proofprofile.net/proofs/artist/9244526d-1ed0-4ffd-9e11-57c1803a28a2.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 0x1a28ab3d6dc9be00d00cf2d1efb86da571301ebc7d5fb018c9efb4b1b8dbe368. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IEAPU1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164cacfcd8042695f20664d8aca4c70090cf2c0a2087b3045d626e939f3ba79a. 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/IEAPU1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca53fb147656e15c05866f44cfda9de4cf4f0b93f110e7c24a747e023f67f8bf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IEAPU1600003.
Éilis Nic Dhiarmada Rua (Elizabeth Mcdermott Roe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5556739fe34cf3dbc1eaa57ec68faff731d732ae7626acc6cacc1162534875. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IEAPU1600004.
Grá Geal Mo Chroí (Bright Love of My Heart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0748a67c6c2ea69427b24b67ab4a3df9f3be5925dd5a37f84fc095896b53729f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IEAPU1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57984d7cb659c816ca6e4eb9e5461731d31e789046e563c63acfea14a6f3796c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IEAPU1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca103703039c4b0b7a86150a1726b0fcadef43095c40165baf7411bbe3ab01b1. 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/IEAPU1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29db9f9da2ac028351e629f60fc99a1dbaeed152917f3d005b44609e196b37dd. 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/IEAPU1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0376a9bdaba863c2f9a594584c86ad2ff7472e0cd2c7c4f1fb24ec1e57a688. 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/IEAPU1600005.
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 0x5df5b1fd2bb66da6c75478173cf3cd21dc5aad0abf353225d5b53a7f3721f53c. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/IEAPU1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce17ffe706f55b5046b5142a0da8e71f5bd43199c647d9a04462cf9351c93b6c. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/IEAPU1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56126f8a213a47672a3a445732df1bde833776a90db62c2802d62df409e91ba. 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/IEAPU0500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9f69ce8ad71442e77e0543b82ea908dbb35865ecaa96a5bb4229234bd325bc. 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/IEAPU0500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273a9a150dd28e4bf11e2fc35670668d0bc57c25e362d7e7381e7f8bea4ea1e3. 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/IEAPU0500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6e62233149829fa1d1371cafc9fea1424fbb0142992292bcf6d9c6d615a8f5. 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/IEAPU0500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c80a74d301e9d1779c77cc194772fbb4ef414fcd615445476483be58f630525. 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/IEAPU0500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7601faec0dffeef9f496377dc4fa1f6dc642d9724fc800cfe194d0cf1bed56. 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/IEAPU0500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf15777c0648c31f31ff3af2b142b9283bac21f2b6f5fd9737c6ad82bbe99647. 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/IEAPU0500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb6ce2e1f24645b41bf89c92e115fdf6d9f0376b526b3fa0d01510774c14003. 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/IEAPU0500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938658a37b41ee9fb0d56b7e51adcc5102504ad356b2bb690fd653bc8b791099. 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/IEAPU0500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dba20b53f2f80373d732dc54a9597e2f7993acf83bbe606917967d4213feab. 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/IEAPU0500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17501c8f709bce866ec4b64176d42c63cd44148605ebc504f1780ebdb9491ff2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/IEAPU0500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb1b34a66a78763611643ce98f7d7d251ec3456de44c3d355e73769e48e53ce. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/IEAPU0500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf71cfcbbc6172d7227bc3f7289f38b06cffc86300070455541d7bf09d6c296. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/IEAPU0500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4af1c0d3e0c212148d535c77fcd3e8c2a559512f9d3107c7dbc570ac250f31. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/IEAPU0500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd628db374ad1f1bc65abd18936029dabcc01dfc7c69b274d10e206fbc280a688. 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/IEAPU0500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf672a50be42712c8b0ee19dbc832c21731f38498df980b2bebff7ba9e1c8604b. 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/IEAPU0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ac1c7f79c243cbac7fca6c531a26b7193318e8b44bf28453b709677338b366. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:37:34Z), 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/IEAPU0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7530336b9bc1cb1a128317837a4f76d99c1e9a5c414faac9fb72290328f81b1. 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/IEAPU0500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceb94f8f0341509e399f53c1fd781d908e5b797254725d720e2dc8d3b894dd7. 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/IEAPU0500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1300207028ad09f1c07cd110df2cc0317b644c267c74af3629325b89e825e559. 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/IEAPU0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905683d1503fe1b6c4bfba04b34f44ddb8e0e76428d6213b059af996790b72e9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IEAPU0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce8eac9dfa8008e602b09cb7f06a598b8925d6eabaeca21c633710b7c2159b0. 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/IEAPU0500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b36ef7ae83560cd76a6099d9fe124dfc828dbf93b40da9e8e00e2d3b9d73479. 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/IEAPU0500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecec0abd9774defff2a221f45efffa3446352a4def88ed9ed2843a6cf722bd1. 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/IEAPU0500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db4d72de99cd93a787cf432127fb2af237a0a388dfb29c5621bfb3949ca33af. 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/IEAPU0500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb764a6349e481df818e59f32fd57352955a4597cb9f7c86509b24cca394a80. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/IEAPU0500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0058e66da9dbc1be367de142cc398a3a92cef20e1a7d4bf0d5b6babe43b2da52. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/IEAPU0500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb366e8bfc56a4598c25948e12d3ee273ab3f054182fb867c3a40b31dc9c40d6. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/IEAPU0500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4998ff2fe5e5613a5bb3b00cb6a9b00be73fed0fbceff1fa941cfb0b14e336. 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/IETSY2100002.