Dave Maclean (born José Carlos González, 29 September 1944 – 17 June 2023) was a Brazilian singer-songwriter, whose repertoire sung in English was very successful in the 1970s. Biography Born in Braz
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 0x53e35bda371f0528e6695f340e22e1a7bc34a9725b5818783986e46a68020687. 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/c23799d3-a7b0-4b64-bdc1-bdfae58ac7f2.json and https://artists.proofprofile.net/proofs/artist/c23799d3-a7b0-4b64-bdc1-bdfae58ac7f2.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 0x9fe9b7fa25a6e6a5879569a70016e7fc660fc09a41749fe2f0e53e74ea8d0545. 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/BRTRB1514168.
Dave Maclean & Montana Country: C.O.U.N.T.R.Y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ec906df2e3483f725956a5dd8a84edf77494dbd3e5bfa92f44929a595aef23. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BR19C1301278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba1620b1ef427e5af07bc6260409cd6164ac6b36ad9773cd54218ca8c347040. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/BR19C1301286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2a98d45a0af0a17e8209a266febb9dc4e96a48c50dede9da2f79d51790ab99. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/BR19C1304040.
O Melhor de Dave Maclean and His Friends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435b5b6173cfc49364ff185872a4ae14ae2377f82224a87ca871a0b29e13e401. 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/BR19C1304405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c731454a82aed086fdb720dc6ab03f42851dd605be27c791814170108a0301. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BR19C1304406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c33f3cfa8e555dad1d54545f142d9c8c3d0db6eb12a9779fc174e806721347e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BR19C1304407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d01d5aff0a13ea7e41503370e1247489c4b62efdb9c14638bb37ccec807f41d. 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/BR19C1304414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022bebaf09d812211e17b501d018b31f143ef2fe44c885feb1bcae967ad2a3f7. 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/BRBMG7400075.