Fursaxa is a United States–based psychedelic folk or freak folk project led by Tara Burke of Pennsylvania. Her home-recordings feature acoustic guitar, simple Casio electronic keyboards, accordion, du
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 0xc7f3537d1156d07917aec9c6bdf5c4ce4434e6ef754238cf69db8367cb09cfb9. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a74b5d65-e157-4459-9314-18ac63f5dd2e.json and https://artists.proofprofile.net/proofs/artist/a74b5d65-e157-4459-9314-18ac63f5dd2e.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 0x195dae092e04edb39ec5cdb769ab0ff60e55db01d834f549a26e354525f5da2e. 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/GBMUA0900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe2a63696de002f2fd2823903829e36cc0bed8c243622b60d452b01db5b40d7. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBMUA0900047.
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 0x002a6914cdd184de9607802d6e297b1e1d040b663c80f406ee0a6571e94e75cf. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBMUA0900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6eeb00cfdb606ed88b4366a874c782ee7d97e3039f75c769e466bca9b56828. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBMUA0900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6462f4295a21ee89f3f7d09c3d357fe7cf6464d61dda925ea624a346caf5b7. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBMUA0900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e032d832f95c510c112adcd5ad6a67424d55c96313942c23c0cfdacf775ba40. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBMUA0900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18358ec6086efef8e9dbf3325d22c15cf3e5512a501e66f7c45ebf2f42fa1a0d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBMUA0900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0211e6768e6d1e617b37cfa02a2811e092644c35327b19e271e3b7c18ab7ddab. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBMUA0600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710d3499d5b31b1e83e51b811664d21433f9547fa250aff8c340a20bad836894. 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/GBMUA0600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d693b7a3f5ed6abf9da0c6f31a17f143d47a6db8ab1f0496ce04b3de096fd0b. 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/GBMUA0600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf515fba884b28cf912566b0df8087353a9edd530fa1ece7e7f7a8522c887e4c9. 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/GBMUA0600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fb608d95bb035c07ae04485476daddeb6787f2a026cdedcaf2ecd5873ce26e. 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/GBMUA0600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87720fa78a49473f89f59000debf84bb7210a85d78d78f1d756149222e2e09e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBMUA0600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed4b195c70df3dac3b071f18bb7475d70c234f68d5726a4900a4013399c897b. 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/GBMUA0600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986f50e3782171f3dc497f564894e39549731140681ede84d6fb97b5921c6def. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/GBMUA0600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f133fe06036c39451fe30096f64808a8f88182fbfd6fbfbdfadc2e45381fd05. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GBMUA0600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115bae6af697e3261ec3bbe0d70c44cb560f362cf004f46b70a2cd2d70572976. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBMUA0600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbca9862c93c3e605d2b54fec9e6177671426b8dff733b8f8dd844aeaedc870. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBMUA0600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adebb44f7d0840e6e260b68744da7a2ed0c14bc77861da7c26a9504bc9b934d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBMUA0600048.