Marshall Howard Crenshaw (born November 11, 1953) is an American musician, singer, songwriter, and guitarist best known for hit songs such as "Someday, Someway", a US top 40 hit in 1982, "Cynical Girl
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 0x12dc3f08282bed696973591f9eab252c3c820c209d80ad678ce814d2618de152. 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/c96e258d-5dab-4bd6-a0c7-c1169d9e580f.json and https://artists.proofprofile.net/proofs/artist/c96e258d-5dab-4bd6-a0c7-c1169d9e580f.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 0xe3fd87aa732f9b502989cc206bbf3be6fd57bff87ab37c6bc707b393f03d9c64. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/USY1R2202705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bfeb6323f85f51d28819f6bb7c5a960180fc58103c4be407ac94dc9d2227aa. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:57Z), 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/USY1R2202706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867b8e7f06d95e0cda12ad44f497221ff19a4bebbcb5a5858576324758022244. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:12:11Z), 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/USY1R2202707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bdee92efdbbe159150cfe1d575fd9d6163317f6330e01b6603510f602a2e75. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USY1R2202710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe959c92d618ff15ae1527d0bfedc3b0f5067a7f531261a1e55963dd6fd278070. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:43:20Z), 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/USY1R2202711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6a31347dc6725349556d16fbb88dac6d2afa17d8cd9dd8868433b921f76eff. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USY1R2202712.
Whenever You're On My Mind / Jungle Rock [Digital 45] (with PDF)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554eaa36f39da07474572443af26e58c7018119e2a718b9502bd31779dd06524. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USWB19903279.
Whenever You're On My Mind / Jungle Rock (45 Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350f1c076ae71436a9aa8cf5f4ddf6812f39d1cfc6deeeeb133be99b6e306a0a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USMC19134420.
Live At The Wxrk Studios, Ny 22 Nov '92 (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8004dcdc9e524e1d4cf4fb81b7ad09499ae4de6345f16f85b6d42efc069f5a7. 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/USME32100291.
This Is Easy: The Best Of Marshall Crenshaw
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f99c3bf3278eafb69aca7075cebad5d7549d5a21a9241adbb04d1b556f9eef3. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:03:27Z), 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/USWB10302939.
You're My Favorite Waste of Time - Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b91ddae4200a403b5f86740fa2bc9143cfaf78fb57f92043abc0bec6a3c0d15. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USWB10302943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d0d4fd9bc339b7cb2ba02c7d2b3642f87e3ac37c86d234e1c72435d3f59444. 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/USWB10302940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc277153447b842156d79ca247f61cb8e8182fe88c43b34196a68cdc0246d3aea. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/USWB10302941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721b995e0c46a8110dbe2b0c7eb9e392b7aed18ab6eaa1558abd8973a24bb228. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USWB10302942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b91ddae4200a403b5f86740fa2bc9143cfaf78fb57f92043abc0bec6a3c0d15. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/USWB10302943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6128177ed5ed0ff64fa04d5f70e0b00070abf8a59ab365e0c5d722f833e5457. 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/USME31900831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7985b99062d3e00869582272325f7951bbd411410c1b17cf42499c40f4857923. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USME31900837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be120f61791eb699a41a71be41481a8742f2dd2481da26726de0fffc4cd80d9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/USME31900838.
Calling Out for Love (At Crying Time) [Live]
The Wild Exciting Sounds of Marshall Crenshaw: Live in the 20th and 21st Century
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719608c9bfd0aecd4281e1582e87163a610bee967c8039ed378cea48a121e210. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USBT21625252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cd261e0f76dccfc356bf87a7f493e5ff0486b74deb771fb50ae1529ed4bf8a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:43Z), 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/USY1R2305803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99529dcbfabe684111ff63b39d6c1189de2c2c821e42369a5a4a9396b22e9df. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USY1R2305804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246429d047391daaeafc3de7219f03b05980388554f3639bd63db1e1d61f31fd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:55:04Z), 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/USY1R2305806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2753a9ba47cb111e1e7f135d8be8e7682254820687d97ed5750b4c04176da3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USY1R2305807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b91a18f826c5e10f6b0b98b72e1737babc4cf9aa2cecb4e61b45287ca28e978. 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/USY1R2305808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5def06678ab6f2c5118b491d9c71df793be52da975366781c31cf3a887193859. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:31Z), 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/USY1R2511405.
La Bamba (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc55774c3aea3249c2adf4c5ee8b41b60fcdddaa24874b9d13d0102636060614. 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/USWB10604178.
Bleecker Street: Greenwich Village in the 60's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3598397ae4b08d8bdfcc057f0da157a675b19017fb3aa01a75a17357a91cd3bd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6P41826619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dbace8a6ce863d0177dbc628db87a2f029818073fd35e9f822b5fc0c763064. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAAP0001011.
For the Love of Harry: Everybody Sings Nilsson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b34b81628aec492e2eb9363a24d323062a0aeffcfabc8af5f693dab4ab3bcc9. 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/USMU10820841.
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 0xc56fb26f1fbf0694e4abdadebc9827d16c95a179d4e19f325214126fa49825d3. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USA5N0300311.
Tulare Dust: A Songwriters' Tribute To Merle Haggard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a541df773ac8516d863ca53ab39e42462b9df7dafd5d1b7f34a598b94ff636. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/USY251706696.