The beardfishes consist of a single extant genus, Polymixia, of deep-sea marine ray-finned fish named for their pair of long hyoid barbels. They are classified in their own order Polymixiiformes . But
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 0x41ed2c076bf576b9084308ce4c36bf663667785fe14d923887caaba0c98032a5. 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/7e37f8ad-78e0-4369-9f10-b0bdc2975f39.json and https://artists.proofprofile.net/proofs/artist/7e37f8ad-78e0-4369-9f10-b0bdc2975f39.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 0x2c1863a45723cf050d4fdeb78642504abba4d15e00fc115ab2e3bbd3edc6a509. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GBDHC0943303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0367427b0388f34e3e448725ce4c348cee30fd35ff711896bd4d8d6c0846b9. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBDHC0943307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aa542f4ca2f0eac064683e1948827d350fd0a779202b23ef8a7abb5c141044. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBDHC1054302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fce0f1e4b70959e5feb8c6392f6d94deca30afd5672aa9f7ffd7031b279e38. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBDHC1261002.
The One inside Part One - Noise in the Background
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df307c6648e2a3e6cdec20e73c73cebbb82e9fbe5b52d4b7d2c886ce332564a. 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/GBDHC1570101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345da2ffac0aac40ea6c9ff04ee2dd39206f1e199bfbe55f0afa47e599ed81e6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T01:09:53Z), 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/GBDHC1570102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0bce63f08cbe4778d80c8a6cc3f09264576d4c0ddd2b8050e1d34106fd735c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBDHC1570104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253d136c6e441b31d5da4b5fa5ef0c93b06b1d8f02f9097c2e06b6083b131ecc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBDHC1570105.
The One inside Part Two - My Companion through Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2a31fd60b49134483ebb3c2dd5c72795cd5d3c5fcbf87aaca915e9996b8b2e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBDHC1570106.
If We Must Be Apart (A Love Story Continued)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909d9da176326606ea74ba4284b94ae0fe547eeea3bfded499c133058dc832d0. 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/GBDHC1570108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc78c26ccafbeb202b5d8438012dc643e0946de821674a1cdea83c85afb976b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBDHC1570110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11efa957fa2d1ae50f99c262b76f843d071d52629e0c95118872634e1e800b4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBDHC2449809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4527c266b29ea66ee3e6f069a4c965e8fe93d3ab2cff30befc080ce7bbc40c66. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/GBDHC2449804.
Out in the Open, Pt. 3 - Hopes and Dreams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9e8d5059b9637eb6ce67ce1ce65dea6dc8f8fd269ac517006f2fc8091fba25. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBDHC2449805.
Out in the Open, Pt. 4 - Oblivion (Reprise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d2bdd246d65d078ea4b0122da1af8b541a0a9bcc49a4a51da6d370de46cff5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBDHC2449806.
Out in the Open, Pt. 5 - Around the Bend
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a76756219b097d64adb46100209700d08f4f8c21cf9a9bdada184e66e3aeb8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/GBDHC2449807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfe1413cad4013a4d720888d15e86c086bba85ccf295b685aea0a6a635ef49c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBDHC2449808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11efa957fa2d1ae50f99c262b76f843d071d52629e0c95118872634e1e800b4. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/GBDHC2449809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf470610f7e0817976e91e6dba7dc01b689a92b56903f6a80f3ec4873c87fd4a5. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBDHC2449810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa005d7c32ab93ca2159b5572241190e94f53451c890e5f5a1778c620b18d3c9. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBDHC2449811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cd499414b5a88f174c5b0da713248f7f32ed5583fee22084cd882b28427960. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBDHC2449812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44df7715034bd24598567c1bef74b9efecf29a5f8a1dfaaed66cd808e5d981fa. 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/GBDHC1261006.