The Delta Rhythm Boys were an American vocal group active from 1934 to 1987. The group was formed at Langston University in Langston, Oklahoma, in 1934 by Carl Jones, Traverse Crawford, Otha Lee Gain
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc202931a4fc0d665e4237dfb8d1f3973ce55275b2b82a0a4e51f88d70bc31353. 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/6c047e0a-94b6-4e45-855a-376e2b01224f.json and https://artists.proofprofile.net/proofs/artist/6c047e0a-94b6-4e45-855a-376e2b01224f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ffcf380d73436476a4a5ff5e0eb69ef856aeeb4e0647b7ae3a266e86607e6a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USRC10500014.
L'amour a fait de moi (feat. Jean-Pierre Landreau et son orchestre) [Mono Version]
Patricia (feat. Christian Bellest et son orchestre) [Mono Version]
Vintage Vocal Jazz / Swing No. 124 - EP: Allouette
Come Softly to Me (feat. Christian Bellest et son orchestre) [Mono Version]
Vintage Vocal Jazz / Swing No. 118 - EP: Tom Dooley
Vintage Vocal Jazz / Swing No. 130 - EP: Swingin' Spirituals
West Side Story (feat. Jerry Van Rooyen and His Orchestra) [Mono Version]
On the Sunny Side of the Street (feat. Gérard Lévèque and His Orchestra) [Mono Version]
Negro spirituals à danser (Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a5aed1d3e230536c4aa93f640142f748c26f9b5a916895b927dd251f51b3f9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMBZ91932550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde50e8beaeed9eafbb8363f48e2b59b52e3ae7b5f16cbeb0355c09a33b8ba206. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEPQB5213080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f4889cc87fba597b2905ebd23e4a5412873026eb8d42537113444a32c47df9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FIFDP6500009.
Just A-Rockin' & A-Jivin' - Anthology, Vol. 1
Jump & Jive 'Til One O'Clock - Anthology, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca2e46b4b10e0e72acce95dccbb4e2a6388e4d283a976e573e0d7a2d4bdbd28. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEF970057129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2beb794609d60ac8c7ecfb6fd6c6bd33f71f9b264a6b56f71a3da4b5b2d4f7e0. 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/DEF970057137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab225bdfa14d41734f64a4a18493c6a511a5f57a040a3423072055ec37106b52. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/DEF970057142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c20219a065e146a09acd0092f5616691fe7e55656fd2fd1a6fefa2a6d479432. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USA371251288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436b296b11cd2ebafc39c056a9b860e39c7ba4ee913b1d651e13acc8bb7385b3. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:47Z), 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/FR6V80584732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36177a6265eac5fe1b3a062b280fe3ba99b7816043e765e72a44bf91721c3fb. 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/FR6V80584734.
Hit Wonder: The Delta Rhythm Boys, Vol. 1
Jazz Elite: Best Of The Delta Rhythm Boys
Top 80 Classics - The Very Best of The Delta Rhythm Boys
Just Jazz Presents, The Delta Rhythm Boys
Essential Classics, Vol. 629: The Delta Rhythm Boys
Les Géants Du Jazz: From Harlem to Småland (Restored Edition '25)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54845444cfabe1b44a343eeeeeb062db4618b7326ebb261cc8c365d85ce0b33. 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/USMC14572798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54845444cfabe1b44a343eeeeeb062db4618b7326ebb261cc8c365d85ce0b33. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USMC14572798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817720778734ce3e0a5f1dcbf6b6bf0f8e38325cfd9b6802ac650f70622f4d93. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/USMC14673669.
The Complete Decca Singles Vol. 3: 1942-1949
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54845444cfabe1b44a343eeeeeb062db4618b7326ebb261cc8c365d85ce0b33. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USMC14572798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817720778734ce3e0a5f1dcbf6b6bf0f8e38325cfd9b6802ac650f70622f4d93. 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/USMC14673669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54845444cfabe1b44a343eeeeeb062db4618b7326ebb261cc8c365d85ce0b33. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USMC14572798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a100fe15f13486c040175d921790f569271dd04f5cace1d13064870102d7ada. 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/SEPQB5113030.
Metronome Records - 40 år med svensk musik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6cf7ee4921c3bf7f617bed452afa1954b4d137d8fe7fd62d8958ec059be3ba. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMC14572800.
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