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 0xd1802c637b9c7aba8fe77f7e4505e61396645e0fa4fd5fc533050a11bbc042fa. 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/452064cd-8eef-4717-acac-34351c0cbbb0.json and https://artists.proofprofile.net/proofs/artist/452064cd-8eef-4717-acac-34351c0cbbb0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Swingin' Uptown: The Big Band (1923 - 1952)
The War: A Ken Burns Film - The 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 0x339b396d4187728e83574a185405a5ce819738959e8a6932cf5a253d78d57e96. 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/DETL61613283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3dda0b3ba4918d4411b6542bb1c62ec6c6701a45356b89f03e858149848fef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USSM19925934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc81b70f31ada55c9e86c7e7b51ada07cc9d31f927565d4505f2985162ca3188. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USMC14273930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8793619a01dc04465becd0f8294a45f716a2295b1c255bd996b0fb55d151df43. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USSM10703324.
Three of a Kind: Muggsy Spanier, Mezz Mezzrow, Erskine Hawkins
Three of a Kind: Leon "Chu" Berry, Flip Phillips, Erskine Hawkins
Erskine Hawkins and His Orchestra the Essential Series
Erskine Hawkins and His Orchestra's Song Of The Wanderer
Tippin' In - Digitally Mastered - September 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb30cb94e7f709aa5be5226b3d923642660603570895044553a52a050790f5ad. 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/USBB19101454.
Erskine Hawkins And His Orchestra's You Can't Escape From Me
Erskine Hawkins and His Orchestra Selected Favorites Volume 2
Erskine Hawkins and His Orchestra Selected Favorites Volume 1
Erskine Hawkins And His Orchestra Selected Hits Vol. 6
Erskine Hawkins And His Orchestra Selected Hits Vol. 5
Erskine Hawkins And His Orchestra Selected Hits Vol. 4
Erskine Hawkins And His Orchestra Selected Hits Vol. 3
Erskine Hawkins And His Orchestra Selected Hits Vol. 2
Erskine Hawkins And His Orchestra Selected Hits Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef5343334e8cab1f945eb76395626ae6621ffe0463c270311241d54fadf9612. 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/USBB10400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1678eaee27f4dac5782cb413c2e978ef4845089c509a150f16802d9ec4dc1fd4. 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/USBB19101048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b36ad6af39f0ee9f9be8792beb47abd2638f5f8fffd578bce0623f57e4f6b7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USNO17700301.
The Fabulous Big Band Collection - More Fabulous Big Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c27ddbe5175615fb8041dcf76af29afa0f426a82c7439482204c8a87123d2ac. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:22:46Z), 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/USBB19700692.
Big Band: Swingin' Through The Night (Bluebird's Best Series)
Saga Jazz: Rhythm and Blues Big Bands (Jazz That Rocks)