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 0x6243d48a5c85c6f2674ef18e83734fe99f46428e11c05d8bdfd83598d91ccfbc. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6059752-fae9-420e-8b28-cad201add113.json and https://artists.proofprofile.net/proofs/artist/f6059752-fae9-420e-8b28-cad201add113.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
At The Village Vanguard (Live At The Village Vanguard, New York City, New York / February 22 and 23, 1961)
Junior Mance and His Swinging Piano (Mono Version)
Smokey Blues (feat. Larry Gales, Ben Riley) [Mono Version]
ベスト・マスター・クオリティーズ
The Soulful Piano of Junior Mance / Big Chief! / Junior Mance Trio At the Village Vanguard
Remastered Mance (The Dave Cash Collection)
The Vinyl Masters: At The Village Vanguard
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 0x55e48e74440d7807465058e7c15ece2272e51c446408e0a9703182043b2c3c46. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI700209301 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1d24f1a08b1e5739f6a366fc5824ddd3b9af4c1ab916b34b6c6a77aa6db3b5. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI700209304 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881040d2680810637e3a64a90124c5af5e5fb1f1f27f659ce3b50d250547a8e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI700209308 — a six-check JSON result.
Groovin' Blues (Junior Mance's Birth 90th Anniversary)
Deep: The Classic 1980 New York Studio Session Remixed, Remastered and Reimagined
ライヴ・アット・グッディ・クラブ (Remastered)