Brian Carpenter may refer to: Brian Carpenter (engineer), British engineer Brian Carpenter (musician), American musician/composer Brian Carpenter (American football), American football player
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 0x5f404c0544eb33816b47524d0591bb8f2ae589e9e377408a2400c5cd4935b912. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d572c724-9b47-4eb0-b48b-13b7698ccf43.json and https://artists.proofprofile.net/proofs/artist/d572c724-9b47-4eb0-b48b-13b7698ccf43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Songs & Symphoniques: The Music of Moondog
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 0x2ff881e8a56b7d1847df490ddf91b14859160394c8f04f48e7417d9329d93799. 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/US3Q52310611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c9a73e13b849df042a3b92105d1776835fb373311ea8396f8fd5af3a687a3f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/US3Q52310613.
Long Time Passing: Kronos Quartet and Friends Celebrate Pete Seeger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaeec6db7879bbdccd83df857de87aa5db2ab032fc720fc8b02f99dee942220. 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/USSF12024004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4bc0272e5165ca03be2faf8fd9e369aba3d96b0706b62f942eb8a530dab72f. 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/USSF12024008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f05b3b938261e37541110948d8fdbbd3c57e7d19da99dd2c0718556f0f647d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USSF12024010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74eeafa7e26ab0578ea0422b6e3e13a6efb43d71e5cf40498fd13227e153331. 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/USSF12024014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba5dbaf43a639b989d466e9bc1618eb31ce37e342bf5de3cfab1dbd4878040d. 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/USSF12024015.