thumb|right|Trummy Young (right) and Jimmie Lunceford, early 1940s thumb|Young, left, shaking hands with Louis Armstrong at a 1955 concert in Oslo James "Trummy" Young (January 12, 1912 – September 10
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 0x6deb5117eec57091b3622ebe1a84b414a82de974cfc32eeb7d86f897bf7a5429. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e31ff079-18d5-4932-8ef0-56c2f15158ad.json and https://artists.proofprofile.net/proofs/artist/e31ff079-18d5-4932-8ef0-56c2f15158ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Top 25 Classics - The Very Best of Trummy Young
Louis Armstrong: Live at the Orpheum Theater, Los Angeles (2021 Remaster)
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 0xb3db8e65c5f7c9129b71be8f36803ccf8e9d1734e441d19abf7fef4b8b7e226e. 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/QMEU32100223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945f4bb0e9687027fb8b6a5bf3103b85ae629003c0aad1b1f540e926e9fbd53c. 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/QMEU32100224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bc5176f50ce02aefbd0951bded36bc0f82f1b3e1172724e9c6ae164b6f7c2b. 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/QMEU32100225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd594a6a0a9cba4cd55c087aac1572635b5aedefb122e88725b1bcf26996c73a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU32100226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f2af3e361c875061dcb9ffe41af5fab859025576b7e4b2715b71c144465023. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QMEU32100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab503001f7f275f9eda656b657c62d231fff9ef8c5723efd8e78c78a72fe2cdc. 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/QMEU32100227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde558cbd2c8a2b133926efc7786735964658fbf0ec4f4b9d62827389ea45db6e. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QMEU32100230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f56d9bf3ee2572722b2ce2c37412201ec1206fe1a7b5ebf2f324876da2c5b4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMEU32100229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7835f5d3e113afffe7db5d6baf8680cf79943025ed8cea7e0d09b8262b6d9a6. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMEU32100231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8532724dc01da587d635b02bdaa10e04774e880f9a179c030ddbc84cab1b2a98. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU32100232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d8b8ccfb9cffe3be8e9a46236b4e7a243286619bf748c7390ab67b22253a56. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMEU32100233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49327a79d49543fc5e663899f0dcff0b7eef21ebfd516e7bcee1c5660c8ab91. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QMEU32100235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713ee6cd730e11781e85338e1e8b9dbde1cf6c38c57629232aec261234efacd5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QMEU32100236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92691c04e87e6d21fb95bae705f83971f591af12942275d4ecd7046df50cc1e4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMEU32100237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1f6ab5ccde2274696b0bd0c501100899f0c9427a84d709bfbebd5252776da9. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/QMEU32100234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef44492c7179a12e29407bc49f6b0c8140e3f018653c9876b154ccbf2ab89be7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU32100238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9c47d0aa8f3df0e9b7b3878e7e10184145d07f6fefcade1af129d0e02ace72. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU32100239.
Coquette - Live at Titania Palast, Berlin, Germany, 10/12/1952
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1914e2aec6e988d158c2c8f6668be6a841f40f1e97be51de0c751c62c16feb0b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM2KL1900641.