The Lettermen are an American male pop vocal trio whose trademark is close-harmony pop songs with light arrangements. The group started in 1959. They have had two Top 10 singles (both No. 7), 16 Top 1
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 0x3ac7174dd34dbcb78ff4bd3208dce332fcc14ac03cfd744e5ca938be9ae4d9b9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/590241d9-1cc7-4803-b420-d7b42f74a8d7.json and https://artists.proofprofile.net/proofs/artist/590241d9-1cc7-4803-b420-d7b42f74a8d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Way You Look Tonight (feat. Jimmie Haskell and His Orchestra) [Mono Version]
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 0xd3d11251329a4fd94e9e5e420ab10fbfaca356037076a9ab9d694f379d3fb9f3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCA20201515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52911e0709154e194c41720c816589efc50079ec7c2ccd049c304f892c36c81. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USCA20201514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13efdcf5a7d414a189016c517d63d0c4186384b97b9b82036056036d2952067b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCA29001485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5628170c367edbd71220094bd9647c5386eedfc3d1fce6359cc65f88e9e36879. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USCA29301430.
16 Reasons (Why I Love You) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97c34e7589373a20ca1ce587e40c766c0414b7402b01da7d85238773fd28417. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USCA20201521.
Turn Around, Look At Me - Remastered 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68211d276beea288b472d0de4261ff901e8d4385ae15f07a610907cf540d947b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCA29101633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23ed78fa9c74aaf9035439062053075ebe5a1417bf4c938610cda8fc2840714. 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/QM6N22121534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c40267fcf2513d73e7d3a21707ff145c14b22719fac7354ca9bbca764dddd2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USGZ21139460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351459b6ed2fd79cec0141f4d9be3d0dddfba7dcab849e10f4d1b03c61f90b8a. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/USJ3V0814881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb524db2060a375672b387c4d680b300b2ff56b58f3a1860fea46fe60b669d87d. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/USCA29101781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f39d16532913577b61caa24d28ad898076dd530cc70800bc8a4bfaeccdd039a. 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/USCA29101782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dca262db6a74ba0130a8719f2dac67b4f72674a35315a963930924db05f8bf9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USCA29101783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036d1472a3154734b637bb17508d91f3a6c90f4e9d663b03c0555ad7b6b6c8c1. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:02:16Z), 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/USCA29101785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96a7ce9a0f89ee4c67bceb26c3de6ee57b8d42426b3558c99fd1f37ba5dfab0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USCA29101632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ed8c1782e5d5177688477fcdfe40b11f3b62b03c255b8aa9463c81179f6631. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCA29101787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cce21573e92232618cb0213e414d1f4cbbffef52e4dda334cdd6cb87307cbe. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:30:37Z), 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/USCA29101793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576b8ce4314c7d2b6c70a5cf71f1233a9f56cc53ff021e551a8d6a0ab3ce381c. 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/USCA29101630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4794979b8e70b5879f7c8a58695a1c36737a7049a46d07a12ecc773764cd18d6. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USJ3V1366192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c4bc2c36e05ab5c0184997d953916b0335ea5b228d06a13964fb032fea8f68. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USJ3V1366194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98cd43a4fcb3f717d1071d6218ee2d385f05dd66e334bf784ed179ed5e84275. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/US2R30610369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2558e18b5bbbcb5218f1c808847976ba2206d771782fec386e03bf96015bdcf. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:14:43Z), 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/US2R30610379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b42a101edd3a14256b91f3ae514ff6b9f78b4bc90d7dcafe414a56ed07b5bc. 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/US2R30610381.
The Lettermen Collection: Beautiful Harmony
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe520e6cd0720c3a00c2d2c1ad789e52ebad74608658b6f0aad9d8171e5485f97. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:36:49Z), 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/USCA20905110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c4ff834e2149816aed1b638e3b2c79f656d54248a93dcbdc6ce57674790958. 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/USCA29101177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576b8ce4314c7d2b6c70a5cf71f1233a9f56cc53ff021e551a8d6a0ab3ce381c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USCA29101630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246396c0fd256a0cec9dda1eb485c9cfde2c37cb88550171e0685c8776ed2d51. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USCA20904941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba242508e378e5fdd058566529e69a809df4c091e330817b0806b280a53869fa. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:26Z), 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/USJ3V0815173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a6ba3ee51fe650cf0c816c927924c4b039206aeabea2f24edf8997278a1181. 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/USJ3V0815178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d7e6f9b106e1ae0ef21a1365533fdd83bc5769e5bf2706e4ca1cbf08621fab. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USJ3V0835105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cdc56488f74759e68a9f2db8a755a80ec95653adf00cc4dbbfbe5fe293c4da. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USJ3V0835109.
How Is Julie? (Performed Live On The Ed Sullivan Show/1962)
The Way You Look Tonight - the Early Hits
The Lettermen: The Extended Play Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15409e306597fb28d1c96bcdd2981dc63ad8ba6f28f3a7c2a0521fad2994b290. 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/GBDAG9302428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc9d16f99adb9a7a67614c4ab9d904c2bcc54a10cd454c5d39741b72b1fe54c. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:40:08Z), 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/GBDAG9302444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03724ca24905972c59d6f6b0f1466f3908221e461295212495f0726744bdb00d. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/GBDAG9302445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd5a68e8730eeb682ee82fddde0c18f0a0ab2506207c62e828cdba9efe7f84b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:17:41Z), 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/GBDAG9302448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d98eeafd5b359421f1787f7aae8caf442f8484ba2a10b1c7cfb69aa936e9509. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBDAG9302451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359435753027148293ba0749841f98c0ded63c8dbd10c47d27fd491f14234abf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBELT1205848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93adae8931cbe9cd7c5ca4eaa0c168fc48f54baf69c9b20b05271e7f4be6926. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:45Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBELT1205854.
ア・ソング・フォー・ヤング・ラヴ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8032c92cf3be9cecc24166bea4c3502ce67260c1828811a5a047a19e3ffe89ac. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UKU6H1913564.
I Only Have Eyes for You (Billboard Hot 100 - No 72)
The Way You Look Tonight (Billboard Hot 100 - No 13)
Traces / Memories (Medley) [Billboard Hot 100 - No 47]
Goin' Out of My Head / Can't Take My Eyes Off You (Billboard Hot 100 - No 7)
The Way You Look Tonight (UK Chart Top 40 - No. 36)
Put Your Head on My Shoulder (Billboard Hot 100 - No 44)
When I Fall in Love (Billboard Hot 100 - No 7)
Theme from A Summer Place (Billboard Hot 100 - No 16)
ア・ニュー・ソング・フォー・ヤング・ラブ
ア・レターメン・カインド・オブ・ラブ
A Song For Young Love & Once Upon A Time [Audiophile Edition]
A Song For Young Love & Once Upon A Time (Audiophile Edition)
The Lettermen: Teenage Love (2025 Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd4b9f1cf63102df966752e11ffdcc87e6aae9a936dc504174c58e1b1e6845c. 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/USRE10500979.