Cheekface is an American indie rock band based in Los Angeles, California. Formed in 2017, the group consists of guitarist and lead vocalist Greg Katz, bassist and backup vocalist Amanda Tannen, and d
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 0xbba4722f1d4c06764b2825f777af75266d4f91364e8c33941bd9c087674b6e8f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b963a81e-1c54-4481-bfd8-cd551ac4efd3.json and https://artists.proofprofile.net/proofs/artist/b963a81e-1c54-4481-bfd8-cd551ac4efd3.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 0xe62bd7b5bd07f76cfea150ff15fc1f4b90fdc15cc25019b6975bb62fa4deabe9. 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/US3DF1901366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8911aa8a29de1d62a7eba781c0c0a4a36cc5e699b67ea89b44c23a2a90fda18b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US3DF1919613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a5da89894ba236b7d38b9787384cff48eee9c8451ac744a2025da4587b7166. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:02:23Z), 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/US3DF1919615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daa8ac08bc41d67cc4abfbefe78a3d71d4b8a5783ea58e812ec6da26bd3fb1d. 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/US3DF1917769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819f8fab2a9f6c6bc33266ee685e0dd7bdd24bc2bcd115e0c67223059a96ea52. 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/US3DF1803466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6dc05a97a57a89ef1447fa3f02f32df513394c2d949e63f18003f29505d46a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3DF1919620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd77d90e53bb13989964c1b64f02a82d79ca7d3123b431a31d9daef751c2ec9. 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/US3DF1919621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa620a666d125ebc746b93d95eea25d4af096dbab872045989ced827bf4c402d2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:05:19Z), 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/US3DF1919622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120bdb9064c06944db102c2620203b1450fd081c6b696287dfa2e1e702866469. 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/US3DF1966236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f6f296c14492e685249d2ce1aa122d9296fe87ff51d041d036c4c5d88c9d59. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USANG2058046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa277ee074be0435845825123588e4084be2086d529b0bd54692a7262d0e726d0. 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/US3DF2052115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df6af2cc05ab1139668bd7806ea49eb86357f12d2fc08b30012a2926a7f1b7a. 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/QM3DF2001524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3126c8ca1e0fb67da0cb916da55f1d9534d5170abf103ee2a9caa114556411. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QM3DF2001525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ce2df2cc791b971ac9c6ad8662a3348194bd80485b9d710e5b7b0c93c1b3a0. 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/US3DF2114422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d66f96d2e176eec43a5d47bea50ec9d396f7290ab5e834f6250e161b00b05. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBZ522123702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ec02819532021c2d513557b33500fc70529c83af7afa53e4fc7dae78dc27df. 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/GBZ522123703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6966e0b1773637b14de105afa6be6b250a7c432c6dc767de92261acd339392. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:43:26Z), 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/GBZ522123704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2ae0b2d886708ad8f5a04af6fbe825251a740106195e16d29205000efa4700. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:48:07Z), 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/US3DF2256616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9574f564910b88ffbd348e7c041deb75ee054c07db70ad71a750c8903220e3a1. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USANG2217815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff191e58138a0abeea64f34d1a97dbbe6b70412c213424237e2a76e6ecb1f680. 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/USANG2217814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86206498f8a5966876b43727866630b8853f0cf9e5f4f60c5bef11552348d48c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USANG2246297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7486a56ae51dadd06ce9cb6ba8c8eb864e2fc1ae044f776659a565bba83c4259. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USANG2278679.
(What's So Funny 'Bout) Peace, Love and Understanding
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe0767576073dbe686b8bdc1f7e200acf5c3b4d02a0164e5cd3c861550a76c6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM3DF2241586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231f83944b723108fbea33c969bf4f151a67b9ae271e4f442b93b2f25f36a71c. 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/QM3DF2276117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7ed5474808a67a2aa7c2ff42e2671382157389e40c22ae5dbe8113b3822b54. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QMANG2206404.