Marc Ford (born April 13, 1966) is an American blues-rock guitarist, songwriter and record producer. He is a former guitarist of the rock and roll band The Black Crowes, the former lead guitarist of T
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 0x0d666216601da44f97aa1c48ba2bf72232501c0fc5e2f65a664ec44058e98d57. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b89702d4-faaa-43cd-839e-19cb8d3d0baa.json and https://artists.proofprofile.net/proofs/artist/b89702d4-faaa-43cd-839e-19cb8d3d0baa.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 0x0072499b6b045fbb6b6b7c66cc42800fbed31cb49bddbe3712e8a008cbe0528f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USCGH2076778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a3efe65854358af1f8a1eac6f93ee179a925bbda8c938f10595cbb85c1e2f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM21651661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a9fd6dee83ce0a43c0cef10f952a839c6d6ead4b3bbed6d6eb58c780b3a0e4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USHM21651665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eadaf73849dc38590681a4f1adcf86294775646f2b6c4a42f8411285003d5a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G1511881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169f38846f5fb941f6ce70cbe7608a528eee95025fd10c342c87832b73371a82. 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/ES71G1511882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1012d7834ce96513e48eac530bb9c577301dfb2a23bcf0085bf333dff91d8841. 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/ES71G1511883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0cb641593902fc0b2eed7a2e93b039584a821f137d754a68726ea0f3d9c176. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES71G1511885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79972c817669e290f2639a6329e94f00741a2224a8b347503433a1a484a0f181. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES71G1511886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fb59d0b364c416dd9915c81c3b59f44dbba1e1d96d830d042f69031aad2314. 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/ES71G1511887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f20076952970ff684c917ab98153222c223185a31606217d644c6415fff3f65. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES71G1511888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50014e2b4f2c09bc57cabc868b63caca4c2f432cc9f71ca58bb0a5c320471549. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:32Z), 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/ES71G1511890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81b030d7c7afefb67f7a1ddc3fed57902edbf594e1e7dbe992c6c89a870a4cd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2762303151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85498b922454d260a46cf179a38cd268431a9b314c490c53925b5aa4921f7682. 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/USHM22499140.
Songs From The Material World (Tribute To George Harrison)
Blues Bureau's Slow Jams Vol. 1: Low Down & Dirty Blues Collection