Donaldson Toussaint L'Ouverture Byrd II (December 9, 1932 – February 4, 2013) was an American jazz and rhythm & blues trumpeter, composer and vocalist. A sideman for many other jazz musicians of his g
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 0xcb5f332f7f0eebdc975d92ef21c779f32909e257c29e9b2967fd9d2cb43d1407. 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/2492ea91-0245-47e7-9a9a-bdb99496ed42.json and https://artists.proofprofile.net/proofs/artist/2492ea91-0245-47e7-9a9a-bdb99496ed42.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 0xf5a04079bcc7ec43612fa5032d2f8429071bb40a9555d1d09515bb1515a9b56c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USBN29600359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5f84579cf25734fae19f2102b6741bddf9bc2b133c90261aa5f206bb8254a9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USBN29300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8b02bff9924ed412c5416e1fc69f31432340748e505164e3e3f22e65f06a76. 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/USCH39300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4578c39c861a54f0b237effb8374f6c5b0f1f91ff846c1b375d711b2b6aaeaa. 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/USVI20701251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1b1bed11ce206ea1ea8690cc97ff7cdaf232e5d2d75a7468b0f46a63026257. 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/USBN29300084.
I'll Close My Eyes (From "Two Guitars") [Bonus Track]
All Night Long / All Day Long (& Bonus Album "Two Guitars")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53583772d110665e18c2d320950ef2a42e7e7b0cdecbd0a35bc67dbc9440a28. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ADA010822215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741822a46e0323a2e06b4dd54e649929731de85c0df0bd1d1a5e37201dc7dac5. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USEE10609294.
Best Jazz Albums of 1956 - Gerry Mulligan, John Coltrane, Hank Mobley, Vol. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4125ea359e8460d494a9a0abbb8ce32931ca110077e9feaba7b55286f4fc2e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEU240700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1442c3cc55e47d7691bd4b275b0ec80436789de15f6bfdad6218cf438da48ba3. 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/DEU240700074.