Haywood Lee Mann (December 30, 1952 – January 27, 2022) was an American guitarist. Biography He was born in New York, where he studied acoustic guitar with blues guitarist Reverend Gary Davis from 19
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 0xf366d8e142eacca8af5626f26a090c3f20143b66db58b91027548faefd470eb2. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b2f7605-f92e-408f-af26-7e74f2d0ccc1.json and https://artists.proofprofile.net/proofs/artist/7b2f7605-f92e-408f-af26-7e74f2d0ccc1.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 0x1776c9b6d2bcc9ba8c98b340750a78a955420fe1fc235a0411cfec0ce1d47cf2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DED339547580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb026d9448679f5309ebbfff25cf5d0fc3dd2afd1f4c1b32d1d95d2e23ba94cb3. 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/DED339915150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132539baeafab82e1fc1fae3370c720290a604a7c2fc5542b26403e5363ea705. 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/DED339915160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c05de2ffb220327a61bac6ce31ce1119567939886625c53f5b50d5fbd819ee. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/DED339915170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d20e8513bd8d8b1cb53a832363c8c179280cfbcba7bc03535f8976c246b8e9. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DED339915180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fd5996a0b786800fe3b5a3ac59947f763d68fde836b7b5c032e03be96b6d50. 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/DED339915190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1edf70e1b085afde681aa1a58836ded526ab4ca50035fda6ecfd3a581fa679. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DED339915200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe49e2a9544a9790c703f85f9318388f98b9d10993b20686a0ce72eb27591d15. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DED339915210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5685824f07c7f5cc12a05c4c8f1837fa8065147de625a62fc4d058fd4fc746. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DED339915220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb11213c843256f89d0b6e9d3eb89990cb9a0c0356b1c653b8ead0b461a5fb4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DED339915240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5691205df31235e7e0cab8526f203b8a279ff3488dcce6f358377afa7c46d295. 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/USL360910284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec8f44add488d7b07e4a42f7819d526e64a2d55b8245b743349ad46ed407240. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USL360910285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b40077115915bc3abb8fdbed36d98e91b3491154cbecd2c1c5b6ca246986f6b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USL360910265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07c409f46df43307f91e2266f46d9af7a36016e71b711b5a0310d99b1915f3a. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/USL360910266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fdb5a6a3aeca4b372accb65a9831577e6fed3e707ae9deeeef090f5f67c4a8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL360910267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdcea3b98d44ffc1d833ddbe8aec815d1ad7518136dfc02631571f773655496. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USL360910268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e21fccb4ec42f1cebe2f73954b676878b483db775b38021ded4fd5c9343b39. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USL360910269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18342875044e18b1d97d7291ccf4b6fd30463b244fc820462e2d092f7c3849e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USL360910270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8689e34106d567fcec116dc1ba95566158c573bef48695a604165b749b108685. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USL360910271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7418b82ad0156c8335f393e880d306db9b682d811d9356c16f2ab2727cd3161d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL360910272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7308742cc2b090473acb96ab5c2e288ef48c9542bde2ec9620ea63fe513636f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USL360910274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd60fe364db8c7e37a6038b1375c0bb174608f3c4b70b1b5817f3ed5ba99185d. 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/USL360910277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94cff74822a6b26b7f6b37dc344d26f4ea622fb91693d13245722465f5a465c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL360910278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104b3cf64049639c2d1e1d8358ea34c87d6a3309348b1895c7bb8eb8ff5b88db. 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/USL360910279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a78bf0c17d2a5b66268f5948ef3f4b8910ace8beeef091e756ca9cd6cb6e9ae. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL360910281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d10a2a03f62fd0bfac5d4108960a1022b4179d4c7ec1f59aec954edb9485b80. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USX2U0810010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae842fcb6141e11ec3d8f6c9adf846386b005b3242c7adbf03829ad8d016badf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR6V81085017.
Some People Play Guitar... Like A Lotta People Don't
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a06e5b81554dd5456c78c2e0162c822e5496d9b2c180cacd6575f537182f44. 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/USL360910333.