Biura is a monotypic genus of Asian cicadas in the tribe Dundubiini (subtribe Aolina); it was erected by Young June Lee and Allen Sanborn in 2015;Lee YJ, Sanborn AF (2015) Erection of a new genus Biur
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 0x7531ece156b52eb08e96d0e3904f5d8b91998dea6f20a444702018919d8247f2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1429bf50-8942-4dca-a562-dce5debf82d1.json and https://artists.proofprofile.net/proofs/artist/1429bf50-8942-4dca-a562-dce5debf82d1.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 0x1c96163df1f947022fa23f2c25e168f384d8704caa5213e5dc5eb569ae445bff. 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/TCADT1839542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6407d276bc43ff9414e3806d70cfeb5a80b408b98329f094d11a73334d96784. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCADT1839552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff825945f005f04b1511d92508189e72d969daec8ee1ad6751a5ec0681abfd94. 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/TCADT1839563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01fe426eb07594cabc939f215d01aab8e4c3963b95aca4964adfc2513f1a1ce. 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/TCADT1839570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd748803b39232d93c826595b6b384cc9265e19f2d42c14e39dad7544f5417d2f. 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/TCADT1839586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd3ac10520a870a823d8220d8a04e68b134f757314850d282a4b1c6f428f53a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADT1839592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e6609826bdeef2b2e1222bbc9ac1b35adf64ba0cffe2325ac2071fddcf0b57. 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/TCADT1839595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a6b54db184b8b27e9bf98d429b661296053862cccfc9eb2211b08a0ddfd73b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:33:57Z), 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/TCADT1839680.
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 0xb95dcac26f75c09128768979c713478392e926fd54e1f700e3fc27936a4d0d1e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCADT1839548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fb089dcba178ea6ec59b82697200b0d5849282c496b88f207171dd32444b88. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCADT1839558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b52e69d050b4d950619f2748fc3a25468354755668da3d46d99505a4d3a0f70. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCADT1839578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82ffa32e86f8abb966d6656eedc90f1ff9d57d8eb83ef724269bf7399e8ab34. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCADT1839644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eb38ee907c62555b629e227cab06e8e31ad4c018b42134c43c8f223f50d3db. 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/PT2DY2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c969041367d704793dae75d731119de5297a81a21fbb32ac0b9cbe149174f96. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZTPX2438937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac90c42cf804fd57ef4a5d3480df5c52845414f3cfbb349f8d608c4f3cdb111. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZW9L2453382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996bd7d7c3fe1f32b8125d9ad22cea350820e6318c3e0d076eebc32070d2da66. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:37Z), 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/QZW9L2453384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faf1298efb8b666e2ac93498be254a2d103a840fda511523742aa1e3f2fdde4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZW9L2453385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58612c9b9c3e01e8b6a3269e2ec219476116c65c58d33658c23ef780888ed6db. 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/TCADJ1786762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30f837ce21b1e7d93bb04ba120f66fb623a3d86e4c64bec66ad460d8ec3e55b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADZ1863241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd16bf04da00963e558b1bedcffdfa4ecbdcf96e5f94cb8f3432b0185379533. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PT4CA1932478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6405ee4f9ea8e62fe20a46ac8791882d5aaf975bfac998919d2bd7a425884fa5. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/BXWOD2000008.