John Coda is an American composer with a focus on film music and television scoring. Life Coda was born in Los Angeles and began composing music when he was still in his teens. He learned to play the
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 0x65aadf2b558dec0624ebb2b50c8241aa5b5f71db88dd5bcaaa5f99947acbcbc9. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4a5a4bc-1ef9-4a1b-815a-4ecf0a53031b.json and https://artists.proofprofile.net/proofs/artist/d4a5a4bc-1ef9-4a1b-815a-4ecf0a53031b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Sierra Nevada Gunfight (Original Motion Picture Soundtrack)
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 0xf1c0ac83f471add3f11b496489b8f06f966c0323916364927a65deb07a2f7671. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USCGH2072994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde381273dd5d6b9f08a422fd4cd2024e69c2d2ca1ff58bec6a1e4d4e9d783c3. 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/QZZ8B2499718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7cebbf4935ed35927f592d776b1837c37f6da9260124f61f28c76714b36969. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ8B2499719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf244cfb4320ebf9d0928dd417d8f3f25a7fb7eab09ea29194e7147c9cb79c2. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZZ8B2499721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4b1e2d2e13d28f2dab4d44f3a5a65480000f1df614ab52d29a56875ff62090. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZZ8B2499722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce1efc87f59baf9823633aca1ae4f541935bbe5b9e5d57efbfe13a6003f2219. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QZZ8B2499725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee064bc689f3b795c0f556669c21916b550e0190ff9a75cd5e1ed1a5dedcb9. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZZ8B2499733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbc42b51977f5dc8802958cfde804d324c49e2ba741c42d1ea243600a8f8759. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZZ8B2499743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cebad7f6f4feffcab2b328dfb036f1e5c708be3a99583851df2b6afe0851fc. 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/QZZ8B2499745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd53028d5f53f45885073cb4d25e146bbcda0e882acd528b58585db9dd934e0. 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/QZZ8B2499757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b338d08818ae994a2aa99a0633bef5c9a623938d3b771cbe7ce7fa5efb92b74. 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/QZZ8B2499760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4185f66219ced7a65761ab9259d23765fb8d1c1070e4d697b532e5e7adfe832. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ8B2499765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db0a79ae69509edfc6bb1be34f151b835fc053db3b47dd56aa0439596295792. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ8B2499769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106644e4f4664e785d7c89fc9375b36f0232bb827d5a7970e12ef2fda34dcad3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZZ8B2499770.