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 0x72f1ec7017c81313151b3d204aeb8d3e3dd815f504e2be43e4de348f1b19746d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09a50add-e436-4c01-a821-31c46ed7ec63.json and https://artists.proofprofile.net/proofs/artist/09a50add-e436-4c01-a821-31c46ed7ec63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jigs & Reels: The Thornton Jig / Chloes Passion / Are You Ready Yet? / Rogha an Ghabha
Reels: John O'Groats House / Traditional Irish Reel / The Ladies Pantalettes
Puirt: Siud Mar Chaidh an Càl a Dholaidh / Nam Biodh Agam Giobal Bodaich / Gobha Bh' Ann a Hogha Gearraidh
Strathspey & Reels: Seonaidh's Tune / Glenlyon, 'S Daor an Tabac / Lumsden's Rant
An T-Aparan Goirid 's an T-Aparan Ùr: Òran Do Sheasaidh Bhaile Raghnaill
Puirt-a-beul Set: 'S Toigh Leam Fhìn Buntàta 's Ìm / Tha Fionnlagh Ag Innearadh / Hùg Oiridh Hiridh Hairidh
Tunes Set: The Thatcher / Peter Byrne's / The Tripper's
An t-Aparan Goirid 's an t-Aparan Ur: Oran do Sheasaidh Bhaile Raghnaill
Puirt-a-beul Set ('S Toigh Leam Fhin Buntata 's Im/Tha Fionnlagh ag Innearadh/Hug Oiridh Hiridh Hairidh)
Tunes Set (The Thatcher/Peter Byrne's/The Tripper's)
M' Fhearann Saidhbhir / Nellie Garvey's Favourit / 'G Ioman Nan Gamhan 's Mi Muladach / Jerry's Pipe Jig
Rugadh Mi 'Teis Meadhan Na Mara (Me Zo Ganet i Kreiz er Mor)
M' fhearann saidhbhir (My Land Is Rich) / Nellie Garvey's Favourite / 'G ioman nan gamhan 's mi muladach / Jerry's Pipe Jig
Bothan Airigh am Braigh Raithneach (A Sheiling On The Braes Of Rannoch)
Co ni mire rium? (Who Will Flirt With Me?) / Trip To Galway
Brogan ur agam a-nochd (I Have New Shoes Tonight) / The Cat And The Dog / Mu chuachag 's laghach thu
Rugadh mi 'teis meadhan na mara (I Was Born In The Midst Of The Sea)
Bodachan cha phos mi (I Shan't Marry An Old Man)
A Mhic Dhughaill 'ic Ruairidh (Son Of Dougal, Son Of Ruairidh)
Ho bha mi, he bha mi (Ho I Was, He I Was)
Ho Bha Mi, He Bha Mi (Ho I Was, He I Was) - Live
M' Fhearann Saidhbhir (My Land Is Rich) / Nellie Garvey's / 'G Ioman Nan Gamhan 'S Mi Muladach / Jerry's Pipe Jig - Live
Oganaich Uir a Rinn M' Fhagail (O Noble Youth Who Has Left Me) - Live
Tha Brogan Ur Agam A-nochd (I Have New Shoes Tonight) / The Cat and the Dog / Mu Chuachag 'S Laghach Thu (My Beloved You Are So Nice) - Live
Turas San Lochmor (Journey in the Lochmor) - Live
Biodh an Deoch Seo 'n Laimh Mo Ruin (This Drink Would Be in the Hand of My Love) - Live
Tunes Set: The Thatcher / Peter Byrne's / The Soup Dragon / Isaac's Welcome to the World - Live
Rugadh Mi 'Teis Meadhan Na Mara (Me Zo Ganet E Kreiz Er Mor / I Was Born in the Midst of the Sea) - Live
Hug Air A' Bhonaid Mhoir (Celebrate the Great Bonnet) - Live
Tunes and Puirt-A-Buel Set: Thornton Jig / Chloe's Passion / Are You Ready Yet? / 'S Toigh Leam Fhin Buntata 'S Im / Tha Fionnlagh Ag Innearadh / Thug Oiridh Thiridh Thairidh - Live
M' Fhearann Saidhbhir / Nellie Garveys / 'G Ioman Nan Gamhan 'S Mi Muladach / Jerry's Pipe Jig - Live
Biodh an Deoch Seo 'n Làimh Mo Rùin - Live
Rugadh Mi 'Teis Meadhan Na Mara (Me Zo Ganet É Kreiz Er Mor) - Live
Tunes and Puirt-À-Bhul Set: Thornton Jig / Chloe's Passion / Are You Ready Yet? / 'S Toigh Leam Fhìn Buntàta 'S Ìm / Tha Fionnlagh Ag Innearadh / Thug Oiridh Thiridh Thairidh - Live
My Love Is On the High Seas (Tha Mo Ghaol Air Aird a' Chuain)
Tha Mo Ghaol Air Aird a' Chuain (My Love Is On the High Seas)
A Ghaoil, Leig Dhachaigh Gum Mhàthair Mi
Òran Fir Heisgeir (Gura Mis' Tha Fo Mhìghean)
Puirt-À-Beul Set: Fodor Dha Na Gamhna Beaga
A Ghaoil, Leig Dhachaigh Gum Mhathair Mi (Love, Let Me Home to My Mother)
Danns' A Luideagan Odhar (Dance Dun-Coloured Slattern)
An Roghain Dain Do Eimhir XXII (The Choice)
Smeorach Chlann Domhnaill (The Mavis of Clan Donald)
Cadal Ciarach Mo Luran (Sleep Well My Beloved)
Puirt-A-Beul Set: Ribinnean Riomhach (Beautiful Ribbons)
Oran Fir Heisgeir (Gura Mis' Tha Fo Mhighean) (The Song of Fear Heisgeir)
Siud Thu 'Ille Ruaidh Ghallain (There You Go, Handsome Red-Haired Youth)
Puirt-A-Buel Set: Fodor Dha Na Gamhna Beaga (Fodder for the Small Stirks)
An Ron (The Seal) / Ann An Caolas Od Odram (In the Narrow of Od Odram)
Dh’èirich Mi Moch, b' Fheàrr Nach Do Dh’èirich
{"copyright_id":"0xfc78bc41ec8653379634e8e6fbb107e0a419aa875bf2ead973810130b25368bb","isrc":"GBXNL2100001","name":"The Hill Burns (River Dee)","registered_at":"2026-06-10T14:36:02Z","spotify_id":"5cHWIjSdZd9JYV8t1dcSv9","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc78bc41ec8653379634e8e6fbb107e0a419aa875bf2ead973810130b25368bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5cHWIjSdZd9JYV8t1dcSv9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5cHWIjSdZd9JYV8t1dcSv9.
{"copyright_id":"0x95e3b26dd901132eed239ac3d81a1f65fabe1db3da625abfb7df037960025b03","isrc":"GBXNL2100002","name":"Craobh nan Ubhal (River Tay)","registered_at":"2026-06-26T10:56:04Z","spotify_id":"0NCGsCxV5ed94Bb4AD6MFf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e3b26dd901132eed239ac3d81a1f65fabe1db3da625abfb7df037960025b03. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0NCGsCxV5ed94Bb4AD6MFf.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0NCGsCxV5ed94Bb4AD6MFf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad4ef836029613709d9d62563e9de70e66293a5a3575e89214c5d8050174600. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ZlzTklJQ2hrlG8mh2am6J.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2ZlzTklJQ2hrlG8mh2am6J.
Pólcaí: Cathaoir Dhonnachaidh / Turas Reachrann / Pólca Aoibhe
Fidléir Ghleann Fhinne / Masúrca Ghleann Fhinne / Fáilte an Fhile
O Éirich, O Eilidh / Ríl Dealgan / Sliabh na gCloch
{"copyright_id":"0x577bd972c34e223d6fc16f2641a693ef7cf6a9a73239d4a8adb4d4671cae81c6","isrc":"GBXNL2400008","name":"O Éirich, O Eilidh / Ríl Dealgan / Sliabh na gCloch","registered_at":"2026-06-28T19:34:54Z","spotify_id":"58Ol5PaHNwrhNK0gIvxb5U","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577bd972c34e223d6fc16f2641a693ef7cf6a9a73239d4a8adb4d4671cae81c6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/58Ol5PaHNwrhNK0gIvxb5U.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/58Ol5PaHNwrhNK0gIvxb5U.
Ge fada mo thriall (Catullus) / Ailí Gheal Chiúin Ní Chearbhaill
{"copyright_id":"0x52f0dbcc87e4056f6345684845ef5f32a5987a228416a2f06c476d9a7b97413c","isrc":"USWD11262921","name":"Touch The Sky - From \"Brave\"/Soundtrack","registered_at":"2026-06-01T23:58:25Z","spotify_id":"2dSzuz0m6CVUYZ0bFykYZI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f0dbcc87e4056f6345684845ef5f32a5987a228416a2f06c476d9a7b97413c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2dSzuz0m6CVUYZ0bFykYZI.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2dSzuz0m6CVUYZ0bFykYZI.
Into The Open Air - From "Brave"/Soundtrack
{"copyright_id":"0x2b83adf5644eb6441bb077e5fb20749a7cb8b3a34b5e237b961b2e6b5c165386","isrc":"USWD11262963","name":"Into The Open Air - From \"Brave\"/Soundtrack","registered_at":"2026-06-04T04:54:06Z","spotify_id":"0buWWJU9TGVJUWCkEsHKos","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b83adf5644eb6441bb077e5fb20749a7cb8b3a34b5e237b961b2e6b5c165386. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0buWWJU9TGVJUWCkEsHKos.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0buWWJU9TGVJUWCkEsHKos.
Hug Air A'Bhonaid Mhòir (Celebrate the Big Bonnet)
Transatlantic Sessions - Series 6, Vol. Two
{"copyright_id":"0x3e531607cd53bc9bd15390981634664f5e7ff6e2765fbcaceddea831f0242bbf","isrc":"GBQSK1303604","name":"Hug Air A'Bhonaid Mhòir (Celebrate the Big Bonnet)","registered_at":"2026-06-20T23:25:02Z","spotify_id":"4Jco0O55dyaJXn8FbPS59d","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e531607cd53bc9bd15390981634664f5e7ff6e2765fbcaceddea831f0242bbf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4Jco0O55dyaJXn8FbPS59d.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4Jco0O55dyaJXn8FbPS59d.
Cailini Deasa Mhuigheo / Eadar Alba Is Eirinn / Mrs Ramsay of Barton / Tie the Bonnet Tight
{"copyright_id":"0x1d4a5c5252e3d3f192936f5792d8a1367c358f7184ead3b40c83878579bc3060","isrc":"GBXNL0800010","name":"Cailini Deasa Mhuigheo / Eadar Alba Is Eirinn / Mrs Ramsay of Barton / Tie the Bonnet Tight","registered_at":"2026-06-22T10:33:42Z","spotify_id":"2TZrwCCumnAp9lpiHfvLAw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4a5c5252e3d3f192936f5792d8a1367c358f7184ead3b40c83878579bc3060. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2TZrwCCumnAp9lpiHfvLAw.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2TZrwCCumnAp9lpiHfvLAw.
Transatlantic Sessions - Series 3: Volume One
Transatlantic Sessions - Series 6, Vol. Three
Transatlantic Sessions - Series 4: Volume Three
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f0dbcc87e4056f6345684845ef5f32a5987a228416a2f06c476d9a7b97413c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4hzXn2TMQHS0oFlKVdtNz9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4hzXn2TMQHS0oFlKVdtNz9.
Canaid Lia Fáil (feat. Julie Fowlis) [2WEI & Ali Christenhusz Remix]
Canaid Lia Fáil (feat. Julie Fowlis) (2WEI & Ali Christenhusz Remix)
{"copyright_id":"0x6e6ee0bbdafa735f952b3d03c624eac4ec6d6b6d1a39c3a84c1949ca890aef88","isrc":"USLS52194701","name":"Canaid Lia Fáil (feat. Julie Fowlis) [2WEI & Ali Christenhusz Remix]","registered_at":"2026-06-08T03:08:34Z","spotify_id":"1yXN3LK84C1xBPQopmSBVi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6ee0bbdafa735f952b3d03c624eac4ec6d6b6d1a39c3a84c1949ca890aef88. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1yXN3LK84C1xBPQopmSBVi.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1yXN3LK84C1xBPQopmSBVi.
Transatlantic Sessions - Series 6, Vol. One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc103413d8d749a3803d505ed7c9fe8b235ff5fde523a80b0891f44443171f28. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4t4p1RGTJPkkTfZ6Txfmdy.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4t4p1RGTJPkkTfZ6Txfmdy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4521e3ffc011707f96847d33fe0f2cb198061fe405e1604b906b25bd82d83cbf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6abeiF2mh4gq52yJ4nCPY4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6abeiF2mh4gq52yJ4nCPY4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1781e7db1c5704d4658d5a498266e7bb7e33a274c45a91f76fca546c92f723. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7mklxi87PbWueIR3jk4zEJ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7mklxi87PbWueIR3jk4zEJ.