Blues Cousins is a Russian blues band. Formed in 1993,Russia Gets the Blues: Music, Culture, and Community in Unsettled Times, Michael E. Urban With Andrei Evdokimov, Cornell University Press, 2004, p
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 0x8d116312a50b97b06c552a458ed246d9df6b3c81d0b982f2b495b54c1d7fc371. 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/5e561343-2d2c-41fc-bc7a-ebd57f872e96.json and https://artists.proofprofile.net/proofs/artist/5e561343-2d2c-41fc-bc7a-ebd57f872e96.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 0x2db7b9f734c1bc56da0aff0032487bd213baa25059981169e7b41687b80117bb. 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/TCADU1822274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29f1246396a3ffbf265fb6d45ec2fb96c399496b90d238675f0be722cbecf72. 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/TCADU1822275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43de3745780cac64503d4c0fe9f595f7fdf8d44ad3bc99504cd24ea63b876fe0. 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/TCADU1822276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a930e8f40d23a20f8c07c6308e08514564b07f528d3e7568f5426c08eff3ac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:42:59Z), 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/TCADU1822281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ff5a110ad034929a4958546f41e39e47783bafc67c947c190b6b1f6a8222fc. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:54:04Z), 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/TCADU1822284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07b1a10f27d32f17d271525edda5484cf68faa758e4a2ecdee40f127a5fae12. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:55:21Z), 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/TCADZ1842048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837a0d8085c11ee83e20c28e641b66d0156cec98ce165e93eedd16e31c7422bd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCADZ1842057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26b3e2727498ea7b68a6092d2d9bf67f73a81ed2b6c7f4a5d956fc9f98d9d06. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:22:11Z), 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/TCADZ1842059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a151b4007150b8965164eb8db90d95de15571d8e25bda662fcf2c140356ba7. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAER2013884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dd95f577c87b259da970bd8d89c840c59c11386b44e5ae055db923a9206ca4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAER2013902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c72677c5de61f251c3f676088ba24bff1790d211fc2f40eea2d961c8e0636d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAES2066094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdce1dca85afa5b95f44cb46e5453a80ec8896fe31236f69d35225b4b094407c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAEW2063372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ce04b9219683d2b06a12492580c3ea3cf604df874984612285a02175f96fbe. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAEW2063391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7090fd5f20058d8287a2d7b9aa45c2d26c812a649d0c71a4ceca305b127af3f1. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TCAEW2063395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb31e028db367f38779aac0e805a381da0b1b1ac5ecba897ed81e955c040d73a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:07:38Z), 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/TCAFK2196111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e82e1808b736dbee727037978ced99b567e447599db4cdb01afdad34f9ee864. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAGT2322943.