The Brothers Four is an American folk singing group formed in 1957 in Seattle, Washington, and best known for their 1960 hit song "Greenfields". History Bob Flick, John Paine, Mike Kirkland, and Di
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 0x2f6e369b2e57a33ff171667a0451a7c84b06f822154f5b43d043aaa220c3811a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63a8c96e-d806-416d-ac45-1dc93095dc5f.json and https://artists.proofprofile.net/proofs/artist/63a8c96e-d806-416d-ac45-1dc93095dc5f.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 0xf73d2926ad59c9f1b9fcbd911d8a6c02c8616b5050f12ace53f0ce480f8e981d. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:44:48Z), 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/USSM16001560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ae5a40c92588d703336fef38938130a9cb9507cc5eb882b85a719c0e6c0944. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:42:46Z), 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/USSM11800259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4895cf96bb4a2333ab7ed9a857f93816e8fe51dc5e9277ea73c8c114732c4e04. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/USSM11800260.
Hits from U. S. A., No. 11 (Mono Version)
Vintage World No. 143 - EP: Riders In The Sky
Vintage World No. 144 - EP: The Green Leaves Of Summer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2903e0622481af46a2ffcbca9b8ccd3cf0b3a88cc3f4a66b4b27217460710a7e. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/USSM15900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc87364de933d396638be7e20fc421ee1c0b2275aa7a9d10bff2862a6a7929bd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:58:44Z), 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/USSM16000241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999991973e7adcd91e4a7eead171d32d1422bb4afef1716e0d36c87d85ad8204. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USSM16100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048c673793c32173c8b7ff247f41d6a481021263d5287f9bcc61965582304ac3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USSM16100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6538cbe3959f4c83119fb2e6239954c491bea1274bf610f2d615c6f4ceda96. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSM16000242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a51ccbdcb5ac39cb757256a63b8b03a5c3e80bfe212b9ed174f89709982b34f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:23Z), 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/USSM16100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04675116122b8b87ce611790d310a105d3a4d746cd1ff868b235be6f0c62701b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:11Z), 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/USSM15900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1838c6f8f0b12614f77466f95c49570c3c7b615e04ba4ae5ec6c6b5b3e4d7d. 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/USSM16000244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c742d21ee49cd7f3d309a4f6c8d941d272c70dd1acb25b38d72be3ee57a6a6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USSM16000245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf924ca2a20350ebc8b90af4e3e568cef63a359caf2995c15e2629f7a836bdb31. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/USSM16101608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c88a17b737951491209f5eb4b520f34129fdd8fce042a7b4e48665fcccfcae. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:49Z), 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/USSM16001561.
Vintage World No. 142 - EP: Blue Water Line
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb385a711ccec6b3397903d1c12c400f1918341f9e00edcbbbf95eb63a060d4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USSM16001564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dba8360367858c683dced0638caefc405f4e0b74bb252409f48bd7f44e78170. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/USSM11800250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483d024ea2f020e26facab26b7c3a29d707e9f757352c5b43018844ebdee7693. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USSM16001562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37007931534eeb94e3c01ea57e8f7d263a9b13be5bdc86bbf7252930bfa84fa. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USSM11800253.
Superman / The Green Leaves of Summer (Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2765be2cc9b2965f3292ac0db2dace1cc30a5a78b61038813ce8af057b82212. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:03Z), 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/USSM10307929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a51ccbdcb5ac39cb757256a63b8b03a5c3e80bfe212b9ed174f89709982b34f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USSM16100180.
Lady Greensleeves / The Driller's Song (Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc164ec5938500cd177d2c28fa5be2094b8c7f4301ff619cbdd3d485c36c36b25. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:10Z), 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/USSM16301490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72efb1dd83ef4aeece5d647b7427f40436ddd0d399805664c185c6e6471654c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USSM16401353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec0ab57196746c94cffa173c291c5658ab6ddb1a669f95a7cab11ce9443c507. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:09:06Z), 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/USSM16301486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a608ebbeb48bed95fd7b138a43b4d91ffc637dfe9b56835dd919d580e4a01a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:44Z), 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/USSM10307928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d68e49d2e701f7bbd45eda0183190f61c2b55239b22fca1c23bace227f7f5c. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/USSM16401352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2946693cd3804eca64839815b1c3827c2c7f5d038f18c6e27888100f8c4b363. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USSM16401349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c60c7ec5b9e6c5f0ec212be262ad8950b046b892d1cee66cab3805ed030d50. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USSM16401348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabada15aa6fb7f24d068fc9096e0701c9394ef329bfde7acf65de356a967ef43. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USSM11203177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5d9023beff421e66d504dc295b33df3c728eeb7bd76553b0cf78e07c0732e0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:23:54Z), 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/USSM11203178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca49f2e2fe4d7f253948a764dad28b396307b036ddd297fa4a858026819253f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USSM10413822.
Beatles Songbook: The Brothers Four Sing Lennon-McCartney
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b88b0b310494f89d81569661173601d1c098863a5dc0e6cffa5d2ae671abefe. 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/USSM10304863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d8a25e05fc18255b6aa5f4eff4ce3f3ba9209644f978d4b82c9e14944e2d0f. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USSM10304867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51d6b33707751d8582cc8c9ea07f640d50b329fffb6ed12c26701953101c089. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USSM10304868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a2aef9bb7594c1052c288f7887e8a0dffdc2fce7e9c745b4a1027944593832. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US6X81700025.
Greenfields (Performed Live On The Ed Sullivan Show/1960)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadecfb584f67562f83afa68e7fb0e60bccd8075b1c8b7433d544c3ce26ca547d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:16:34Z), 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/USCGJ1065327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87ceca751c1c8dc6c71919eb3ae3074ff97acc13ae43f5d16a2822b8f7f32ca. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USCGJ1065330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514cf829bed5e118bb195881d0a3506ffcb4cad6f34119be76fa03fee3e857f9. 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/USCGJ1065336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca30b5065d69627eb682cb8d94f69aae7f4dd9f376a0cf26bfda37c086a6cce. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USCGJ1065338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa7380bd3c052e8edd77ddd5a0b3ad570a2bdb9e243abf1c8786d3ecb8e5c3c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGJ1065344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8754c6600c1e182e1af6dbb7d70b27994ad94089414a4fc0fb3804d3fbe0ba36. 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/USCGJ1065345.
Roamin'/B.M.O.C. (The Best Music On Campus)
The Brothers Four Greatest Hits: The Green Leaves of Summer
Nine Pound Hammer: The Best of The Brothers Four
Greenfields and Other Folk Music Greats - First Five Albums
The Beautiful World of the Brothers Four
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650223edf8bf65c38273f70c7c84a1551c78b5fe497279e962df5318d46b3bea. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:38:50Z), 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/USHM81405836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d91351fd37fad03ba00b7ce2d9cc9a76723115dafbc828cd507a14caa0b354d. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/USHM81405837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf4371f38b24bba9442a7cad367d4628de07cf0bf62bfe928fed55dcd8631c1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USHM81405838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5ed3901d3f3e421f3d7667b4e562c0929b9b2fa8d5e408694741451ffe34d3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:53:33Z), 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/USHM81405844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496aea5af61cd156f972ee4a0fed0a7cb6510e8559c172cb087daff295ae2846. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USHM81405849.
The Diamond Collection (Original Recordings)
Goodnight Irene: The Brothers Four Song Book
Four Strong Winds: The Brother Four Folk Favourites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005d2a73022a6d64987372672c6e6c03417fecd75dfca362ff50cb22bdb556af. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBELT1205184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedf35e9f19c83c0f57c1da4abb93c428769b1692aab6fca354025a901de867c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:47Z), 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/US6X81200176.
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The Very Best of the Brothers Four: Renewal
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Milestones of Legends: The Greatest American Folk-Groups, Vol. 10
Milestones of Legends: The Greatest American Folk-Groups, Vol. 9
A Night to Remember: A 40 Year Celebration (Live)
In the Name of Brotherhood: The Brothers Four Live
Flowers & Green: New Songs From the Heart
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Let's Spend an Evening with The Four Brothers
Anthology: Their Golden Years (Remastered)
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