Charles Michael Kittridge Thompson IV (born April 6, 1965), known professionally as Black Francis and formerly Frank Black, is an American singer, songwriter, and guitarist who is the lead vocalist of
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 0x13bbe38b568cf2e83618b71adf3e9a6bffce145e720af433a2a0a3395aeb54e7. 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/9fa54e15-b85b-45f4-a603-98cbf25999e7.json and https://artists.proofprofile.net/proofs/artist/9fa54e15-b85b-45f4-a603-98cbf25999e7.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 0xec09269dd3636aab2bf05c489ddb5af8e8399f57ef1d1666c709ea1fd89bb3af. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBCEJ0700565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6cf0f9f30d73f8be40922990838ecdb3be3aa5205f99d10ade959ce2b9f3a5. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/GBCEJ0700566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496da9664b7c0f35ac7ac3c51602aca92f9b08c3bd271e4038f62116f1541b38. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBCEJ0700567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca7bf19de5c9fa33dec037529f489f6a84974e5cbd6398af869fd6d86a9e3d7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBCEJ0700568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4240d84dad02fcd7b17007bfeca60f118518d3c795721edf15576209377ec9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:19:57Z), 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/GBCEJ0700569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2c3fb15101750d9df05699ca12a759975ab84c22837d36aa32bf5e60a758e0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBCEJ0700570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebbf8d16cb010014496ce2842d779435b3087808c1134c17d254672108602b1. 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/GBCEJ0700287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585a30b0cf2d29485787a607ff61ba23e87ec8122f141e641adbd96ba9c76353. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:35:25Z), 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/GBCEJ0700289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6ea445ed1caae921dafa98258d9c81ac0da79414b7562a83680d8d3b8d2d87. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GBCEJ0700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97780e6235d6753033c3ad82a296f85881be39b716c6a15360e188e7eab1626f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBCEJ0700291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043d548e5fc25d1518d39b2109086e249a9a982f1527413507f4fd6ce204d515. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBCEJ0700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358c0e8c8b47a8c54b75f9b9754b9566a31889fc2cc079cad0bbb6a6aa6e5045. 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/GBCEJ0700293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e80b1979f987af568b1ed7f9388282325c4ff5a5a6a79b222bc94c80e8d9cec. 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/GBCEJ0700294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254bfea733d5cd6e9039b035a4d9e8897d8a327aa784a9ec9ce9b3b308e2f2c9. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBCEJ0700295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036570888a2907a2f26889dc3c1c9116fd53d2de2e09ecf3c8fa5c15c0e83294. 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/GBCEJ0700296.
New Tales To Tell: A Tribute To Love And Rockets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60acb070ac1a6ea8161e27492c5efaa20f851f1b60602260584653bd1e362d7. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USQY50949685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884862754529d3ca1de1452b7f99d86c1c0407554df124e14dd5f3ff02ae6729. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USQY50949697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a9e66a91cf8c45b358c4b51cf2aec4e91df0e00c2732eff15e176c522ada19. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBAYE1000506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0804a475a51873bc567ce7e83be619bc19db0d7ef45c9ee3b2d92ce20bbb80d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USF461200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cdec50f9fc10d8d2f4e1e05e20db307c3206c8d7764ee0b170be011a4c92f5. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBUM71027157.