La Nef (French: The Nave (of a ship or church or a medieval boat) is a French-Canadian early music performance group founded in Quebec in 1991. The founding members were Sylvain Bergeron, the guitar a
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 0x7f46e79b0a11dd339ba146b799678544d8f2615823d4e3048a964b8003bd6b11. 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/1a855caf-2f58-42de-9e65-adb2a1755c07.json and https://artists.proofprofile.net/proofs/artist/1a855caf-2f58-42de-9e65-adb2a1755c07.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Battle of Killiecrankie: Love & War Songs in Free Scotland
Book of Songs, Book 1: Sleep Wayward Thoughts (Arr. by Seán Dagher and Michael Slattery)
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 0x2bb6725f85a8747e7263452e7bd3f5ac9245e2981a012d576cc13086678571cb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:21:41Z), 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/CAJ721265001.
Book of Songs, Book 2: Fine Knacks for Ladies (Arr. by Seán Dagher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb0aa6e5d5b0e616ea29298c613dbd5f511d6c937ff2135d7056dac88354f0d. 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/CAJ721265004.
Kemp’s Jig / Mistress Winter’s Jump / My Lady Hunsdon’s Puff
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ca0966657f384a6151b8760d53c1222f996f716e495bf09c1844bfc6716bef. 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/CAJ721265012.
Sacrum Mysterium (A Celtic Christmas Vespers)
Sacrum Mysterium: Part II "Song of Mary", O'Carolan's Cup - Manx Gaelic lullaby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f525081c1b8b6df8dc11e4557ab21d7f469a2e445fb84aeddedc4fc9e59fd7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBELX1204426.
Sacrum Mysterium: Part II "Song of Mary", At Work on the Land / Tatter Jack Walsh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733504d7cb112c667a99bc69709361d6481fd5dfc14155f1f1975e557d16f5f7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBELX1204428.
Reis glorios: Ouverture (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde1f5d59aa65eb75699eae5ed54c4d641b924273bfff0c9b5f79311786be79. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USKC60714336.
Lonc tems ai - Lo ferm vole (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cf571a61c7d5184db3345b4c85ff2b47c3d38651d8205b29dd8515751b91da. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USKC60714340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1176affcd1d81b26065f1afa881b20bdc8dabe098c1c752a7e77b27c8d5b46be. 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/CAJ720858801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8068f6da39da471c118b768d4639c9a8844ef025f6978482eb9eadbae3f1e142. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAJ720858803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaad0c1f4f22df1173e2f52eb25c0ff6fa7ea95ab454569bed924e2ec10dc3ed. 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/CAJ720858805.
Le navire de Bayonne (Arr. by Sylvain Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eda2ca508f580dfb94c247d8d8eb8b6de52c6579842d3ef197915993e4abb97. 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/CAJ720858808.
Le combat de la Danaé (Arr. by Sylvain Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156be45d94d4857df9dff878ea671cda516e81cfae359cb3d34e76985d935202. 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/CAJ720858809.
Oikan Ayns Bethlehem: Celtic Christmas Songs
Bergeron, S.: Perceval La Quete Du Graal (The Quest for the Grail, Vol. 2) (La Nef)
Bergeron, S.: Perceval La Quete Du Graal (The Quest for the Grail, Vol. 1) (La Nef)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaec91916cec9a866be52c35b0fd3088385fe159a25a0e6059edecc0ea5f678. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CAJ721774901.
Go To Sea No More (Arr. by Seán Dagher and Nelson Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc18768268ddc8ee467a27e896863de3408cb99c08b346e2da80ad271940352. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:02:53Z), 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/CAJ721774902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0594fe7896fe6cec4a93bc6c658c03459469f76b85b05d5ffc612fdb805016a7. 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/CAJ721774903.
Out On The Ocean (Arr. by Seán Dagher, Nelson Carter and David Gossage)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d83a33a328e8b7779f159de5f1790173e6d2feb5cc0b92324f07e08cdf34cba. 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/CAJ721774904.
Over The Hills And Faraway (Arr. by Seán Dagher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1254f6c7f13ddf8b0f441286283d25aba586b7d927a57759859ac46e60c77cda. 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/CAJ721774905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd207d1bd31d6ee38fe510f740d7b8846d0142d54a3a27ede8b8a58fbbb4d6eca. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAJ721774906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1b1d57aea4dc9cd886ce4197dcd51b1abfe3ca6506c60abcc5b68dd472a630. 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/CAJ721774909.
Haul On The Bowline (Arr. by Seán Dagher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1a96394e1d8a3ca71d61d0a6b7d814d163ed0a4b3b374bf45d14c1beacf1f6. 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/CAJ721774912.
Musiques des montagnes: musiques et chants de la Grèce et des Balkans
My Love Is Like a Red, Red Rose: Settings of Robert Burns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c8b21c4469dda0eaa7cb50acde1a1ac65f18b69948eb5906abcb2c103a42ec. 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/USKC60710461.