John Graham McVie (; born 26 November 1945) is a British bass guitarist. He is best known as a member since 1967 of the band Fleetwood Mac, and prior to that, the rock band John Mayall & the Bluesbrea
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 0x227b94c74dec64d236f1480e0201704744777d04490b7e7460a5f54fea169bd4. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70a0c1be-bb39-44d5-87b8-6ef14302fbd2.json and https://artists.proofprofile.net/proofs/artist/70a0c1be-bb39-44d5-87b8-6ef14302fbd2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hypnotized - Live At The Roxy, Hollywood, 1981
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 0x6d7a6d6be3786bd909730ed7d5f3fe480131e44620a2a856b2434a052703b5b2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL2008489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ee0c71117592952dad1408a758c209f5812fa838718d225baac5252ebe9179. 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/QMBPJ2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1105f7047f263788312214d42df87b4b7e9e9809e2add7552464fb3ff765ef75. 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/QMBPJ2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac15c410965204f1aeb63593807502340b80845e50df93a3e4cdb575eed8c317. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMBPJ2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9506c58ac12091440839e9aaf09d7a08e2f056886b27278940993ec7583a72. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMBPJ1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ac27e2f60632d792cde975450888425636e3106e3562581032dbbdfadf57bc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMBPJ2300001.
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 0xb0892bc9579e368dd47af6d1a64534962f30c35a8de7d2d3ef946ff7c67db0f3. 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/QMBPJ2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fd9ed8f5446e60ba83ea4e6094330a84ab419ced24b73bec00e9c9d63f0271. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QMBPJ2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62b064eff459b2b1bb36a76e9bc50dbde5090273f221604b17bd5da265a0658. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QMBPJ2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54db1156972dd41a5f61588d0ad2373f8670bf343b410b4165491b0964d0ab85. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMBPJ2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72bc53ede19dac3269c7e812b495417a7b5dbcf697a04b75222ba0fe56a1de2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMBPJ1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72863d4f1441e40a65188f04c767477920769eb45f4933c2ee5f473372be362a. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QMBPJ1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdfa971b4960974b7aa46475ded9fdf08c28d92a4b6efa0a086662a3b065842. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMBPJ1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4d59bbc401a69ea9dc12d4dbaf039b1d71d6c269905f7ba17308c35597bfc0. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QMBPJ1600009.