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 0x8090eb6a5226077dbdf8d25ca156a442d884a1eea31e916217be8809c8925a59. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e794a3b0-d555-4fd8-b457-bf51caecee7c.json and https://artists.proofprofile.net/proofs/artist/e794a3b0-d555-4fd8-b457-bf51caecee7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
the music of James Barnes: Danza Sinfonica
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 0x19ec1ba273f2c0b91677ecc28333a741ea9446b9bffad613289f83c98d11d226. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USVZX1311102.
Yorkshire Ballad (version for wind ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7978ad3f077db92a5165b513ed9068eed250e173b2ea03f75a4e409e57054c71. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USVZX1311104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395e78d10144de911cae81fb132b62ceeef5fcd615cd932a970332262b5b9544. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/USVZX1311108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76922588611e29235d3300d3b11bfdf83911a72a4d7be7cf4dc43af12bdc57c. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:47:05Z), 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/USVZX1311109.
Barnes: Symphony No. 5, Op. 110 "Pheonix" (Live)
交響曲第3番 作品89 - 第4楽章 Finale. Allegro Giocoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eaac9a4c252649fa7510913f1bf1727c88943e65bd8d13e5afad7fd557c1155. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:08:21Z), 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/JPB602200548.
Fantasy Variations on a Theme by Nicolo Paganini
United States Air Force Heritage of America Band
Usaf Heritage Of America Band: Proclamations
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a914bc48862e8410d649522da2fee082fc1055b6571d8c662e06918bb193085. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US2WU0900524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3effaf2d2040ee17845d3afebe35f65df69f60d973fbbfe1a66d5b37fc905aa8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DED810703020.
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 0xf9406305b7e155ac07f62cc2b3f13d48f5147ce2fbef3cd2efea4f9075349545. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NOCJB1300920.