Chris Pureka is a genderqueer American acoustic singer-songwriter. Pureka has received positive reviews in the long-running radical feminist publication off our backs and other magazines. Their music
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 0xf5c815c99a244a17505a273272046305bbefc8c9700220ba3c726b0a4dd19211. 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/a1d56c75-6756-4114-9c85-491b6eceb224.json and https://artists.proofprofile.net/proofs/artist/a1d56c75-6756-4114-9c85-491b6eceb224.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 0xc4bd05fcb4cf46d0c50209bf0a960176d25d06d79ba8c087a77c963e61a600f7. 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/USHM80446217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1679da7592019a341efecd2002ca7ebf288fee3e912a53f1c49d2419f7a5a1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USHM80446218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d6edef97b84ebc2b2c508259c9804ea637b89ec909b53635f99f2465ccf58c. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/USHM80446219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44c055b52bbdda434f47d679fb215d7d7bb739ff8dcaa80ad10331611607e3f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/USHM80446222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86a53ed9cf0c5c3abdb6df730a2bb3ef26b66493f9f3c962a6120b938ce8597. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USHM80446224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbff7888c3e41b9558eba03894e845119760baff6ae23b85fcf52e13a4c18cb0. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USHM80446225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db3704a413ab397baf5d79bee845e469ed6b5d27583e260f8123971f394aeab. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/USHM80446227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444cb18ed34f8101dbbf64741225eb2d7615713c608f1a611ac2c758b3adb863. 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/USX2J0600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715febfec41d8983f83c4299e71274cf890df3154569b0fb2c420f3162ccba8a. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USX2J0600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dd13a6ed1d00d0b7dba83450d32c3f80e01a30ab29a2e04a99c191150fea89. 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/USX2J0600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5f4af356b75f899fd7bfe35625e3d2be854353bb92c9b9da19f49dc125d772. 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/USX2J0600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d3106d2f1829ca70479ea1e6b6a1de4d14ad0378d884b919f2d688b89b11bc. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/USX2J0600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7866cff90327c4dd2cb39ae569775b39ebee1ddac20e2b8c4aaae06c4d70199e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USX2J0600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100312d7a1372348fe7804b1195ff39c043105505473bdea20cda28042a38db6. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USX2J0600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e238520103975d0174bbc8ade416e91188dd23eb2b9d968df962c77fdd11339. 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/USX2J0600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629b094a070bd44a8230b1925978451a09bc57dbd59a3773b4fc23f0afd33af3. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USX2J0600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2303e58cad74174a0a74892a140697706a8a7af7b7de39fb2125b8434fc780f2. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/USX2J0600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb09395763124d53d4f062601b53dbe80c53380b6dd7f42b29aec21516ccdaf0. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USX2J0600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83977712bbbfd74a2781c489dd57cdf0c1f3ce7ac42fc644d659dd9cc6b3d07d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USX2J1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb989e7269b158a84d61f950acb44d44516bb1cbf64bc3a164a8b51c00603e3d. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USX2J1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51eb049179820c18f242c70b05169cff49943c7dd3a5bdccbce390c29b940925. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USX2J1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7d88531604a049e909c7fc4bbcc20ab70ac9691aeb2b45a2b414f2f1632ab4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USX2J1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31003591855ddb5e1fc01325da1ab9052d62e3f7eda83cc2fc693bb6107b1496. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USX2J1000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7055aa65169dff6616f596dcd06860c00f9ca92c1db3fdc4505faef734ef26. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DECB81300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7f52dc53934d607479097199d88220e6985ea19a74a42b3ec033f047383297. 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/DECB81300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0da204c21c312f84f46a7885da7f48e4ea6ee3c693244378dd9d6674b80d7e. 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/DECB81300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7d48436ed6369064228743835778484a2e04f9367409b82873cfb80b2c3973. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DECB81300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45607898d0efc47a968210187049b121afbb6f791da79698a288b844aaed70e4. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USX2J1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbf9d0738c9657a6664afaeb59562c379d9001103b7e7ce622489ba0a82e074. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USX2J1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f0ab9d3db5a1477ec4dde391c8643b5ff6a590a6eda38bdcbbc1f66cc3d909. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USX2J1600009.
Live at Jammin' Java, Vienna, VA (April 17th, 2016)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f6439f2541255e5a03ece972e94b76e4ad65b45d99a8852a4d63adea82b078. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USX2J2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f3f9883621b5a9b337c327bd13e00dd0807f3c5628fe2c431cfaa7e78cef68. 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/USX2J2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b861c45b75d1824c8d5d04f9beb00a997de4d3ceb3c74ed59e880618ece26d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USX2J2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47767b16e55bae762d69ca08cb85dc31fed3ac15f7a8303bf5ab636532095ab. 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/USX2J2100004.
Shameless (Music From The Television Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9e5a02812b368ab964a55cce4dd98497121ece3e9b5e33a3fbb6941224d15c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US3M51425910.