Hugar (meaning "minds"; ) are an Icelandic neo-classical post-rock duo, consisting of multi-instrumentalist composers Bergur Þórisson and Pétur Jónsson from Seltjarnarnes, Iceland. History Bergur and
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 0xfd82a96e5be42180d5dbf2de8fc482e60f2d9f60028e31578b444fa5e4363530. 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/dae76e9a-c489-4c6a-8edf-4f889e1c0cf6.json and https://artists.proofprofile.net/proofs/artist/dae76e9a-c489-4c6a-8edf-4f889e1c0cf6.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 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 0xd642c235db368707ecf6c01580ba76e83ee8929d0a986656a6ead5df354795d0. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCABY1482841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5543c3c47a6e9bffbaf8c2a2dd9019864d59bd172d494498ddfc651a9cec4dc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABY1482843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5147192253b621009fa2b37cfb7e244512e9777827ff47f095dfb33ce91a49b2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCABY1482844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca0d6ba0c692c4dd1ca5efdf4870cb3f1d4f0106e8a099da28a1967613aa058. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:04:02Z), 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/TCABY1482848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58027bac7c2406184370101732875467ac40604d2564ab02cc25e567cde80da6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCABY1482851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1fb82bb7f50188f1aa80b03eaf1934952c82ed47ae627c0796ce7321653c69. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/ISV441627601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0c0ec371a8a8ff48b10f6251191efd16ba30614be0b0b191208bf9f883e279. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GBKPL1674926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdea82fcbb79d98627935df2cf9af767ad1f8a7d6f03499f3c6ef1ed55ed192. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/USQX91801358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4844601568f6b7b897a5b997b0429b92d87b8587358bd4c5552a2d1bd94172e8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USQX91801359.
The Vasulka Effect: Music for the Motion Picture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0aeb260da4c6d47a77bfe3ca1ee05b0eb88d3f23329e72e10d2d29b8527b2d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USQX92001049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef93020d3d62ef613e472d392bd39b0a35d9951cd54010f3ecae9b0675a0c6c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USQX92001057.
Hátíð fer að höndum ein (Icelandic Christmas Hymn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790a5b7dba47d628769e08063daaf59c860bf6be39e3f0a658eeaccb2a009d8f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USQX92100887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48161ed6c9b409900fecbb81a9f69c85dba953b17fd7956049b854afd1e1b923. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USQX92100889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c6826e8b925981bd3ced93f4b5772dd04022e4e0a61dafe82c75b76cf2fcde. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USQX92100886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9b79b6be40924fba37cf962438577987dfea6b83e8208d637f1538e7490c5e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USQX92103238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a56612727b5fa3eea6a25d003f2ca1323467cc516700c7f39e559d266d3f4b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USQX92103241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99efa62fe74711377523cf1f6a218058f1c37a096ce4fa15b95a44b18758ac0f. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USQX92103244.
fall (Hania Rani Rework) (feat. Hania Rani)
ok (Dustin O'Halloran Rework) (feat. Dustin O'Halloran)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae59bef805cd4f50b770a372696514732be8776578281c6d534ca5d00c4dbc0d. 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/USQX92301411.