Warne Marion Marsh (October 26, 1927 – December 18, 1987) was an American tenor saxophonist. Born in Los Angeles, his playing first came to prominence in the 1950s as a protégé of pianist Lennie Trist
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 0x67de8f0b62574a54958eb411934cf8b4f8b8876b8ba4954b157ce0f168ce1b89. 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/789487fe-5fc6-46e7-a9f2-9a95eca7eebe.json and https://artists.proofprofile.net/proofs/artist/789487fe-5fc6-46e7-a9f2-9a95eca7eebe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Unreleased Art, Vol. 9: Art Pepper & Warne Marsh at Donte's, April 26, 1974 (Live)
Storyville Presents The A-Z Jazz Encyclopedia-M
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 0xfc597841d2ce2428f153f3e6fd093113ae1382f2cf838268eb7bf9cf78aefdbc. 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/DKEFA0701903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ecad8f453ddabb1d023451dc446a5dd55c54776fa932e8846be5634786da6d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USAT20506299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0f8a431b3c2b0bd7b0181d6d947c8a544e202129515510322a0f5ed899d46a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USAT20506300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56962f4b596e04473a2fc4672be0028b146962fa77bb113c6cb871ee2122eeb8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USAT20506301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99db3b1efded4a39d83ad28261b1298cca8d873fbf707647d79e050e1e1265e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DKEFA9703001.
The Unissued Copenhagen Studio Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524aa3f21bb4e2cc1438bb345ddc10e0ad753f8862ddf8a086c3ef31578b610d. 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/USBN29600524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf5f4b73975558e09b884aa8851fbdb474e84558b0841e736a51dcba756d188. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USBN29600515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c1e524361c17b158e47e4395f74b6cb0be4f68dc1bb4fbcec4b6a362279c2d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USBN29600521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b27c26a50f5c282f0ea3d2389af111aa095cc8ddcbeb1a7c34a0654de6d6ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USBN29600523.
Tschaikovsky's Opus #42, Third Movement - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70b699a86465f591962aba86f9a7cb31ea2b1cb1cfa4abb018819e5ad41f7fa. 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/USBN29600525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d189ca4220c59b09d198c78e36cfe4ecebd27d52b7b7c9fe286f60d70452196. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USBN29600516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f341724e4bebd85d39e3f681c5d1aca30160ebe7c17e0d733a249f53a58dc22. 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/USBN29600522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf836de4c1fdc6219595d0ebf36b1ae073ce999f086109e27529d8976e276fb52. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCA29600741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2347ea27f77f3ff5e1bbd7b0561e16cdef8a238d6240fb28006ba16b82aab2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCA29200411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba065c3ca0e795f4b6880c479c6fae72b371bb2bb79658de4e9215ec6452226b. 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/USCA29600745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce6207a8dc78e736dffafbcf5f11885b140c0664b936f3b63948b64bf8674ff. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USCA29600744.
The Duo (Live at Sweet Basil, New York City, 1980)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ecf02dffd0bad74ceb86b6c30c0c0463b308b0b791576bb6462d15444e1f69. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOKTA8101060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465359f24dfb23e8f9ca522bccd67e62f56865c932e761f32f6d6e8a64445f42. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USFI87800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384bf703f16d5eafdf5fd7b658fb93636a727631d48854e377986ef2e89bd256. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USFI87800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dfb5b47779d42793e5ad76eb35873bb3b139982653860c2c6c5ce6b02824b8. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USFI87800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd466ec91491a12823bf52355ca84c7149ce87128d14bfa3d142ec03361d104. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USFI87800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9085c33bc60123da81581f2c88030f56ddcaaf19b4dbf4e2a7323a6706f295c5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USFI87800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644fe8d082db8a1e660be1b856ceba71a9b1286f180581fb48787b5bd550c0c0. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USFI89200068.
Modern Jazz: Lee Konitz With Warne Marsh (Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524aa3f21bb4e2cc1438bb345ddc10e0ad753f8862ddf8a086c3ef31578b610d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USBN29600524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf5f4b73975558e09b884aa8851fbdb474e84558b0841e736a51dcba756d188. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBN29600515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c1e524361c17b158e47e4395f74b6cb0be4f68dc1bb4fbcec4b6a362279c2d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBN29600521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b27c26a50f5c282f0ea3d2389af111aa095cc8ddcbeb1a7c34a0654de6d6ef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBN29600523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70b699a86465f591962aba86f9a7cb31ea2b1cb1cfa4abb018819e5ad41f7fa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USBN29600525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00df24f904386c8d302e3fefb21af7142077ad0fd8fbfb98f73c2cd7f96ea82b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US99P0514462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f04dbdfd340f578cdf397628c40d0aa5003ccbada0b3983176c3f51a7cd49ea. 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/US99P0514464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06d959ac23d30baea13816b00efad76829501385c7c63e230bcf7b44c8199f4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US99P0514466.