Marc Ribot (; born May 21, 1954) is an American guitarist and composer. His work has touched on many styles, including no wave, free jazz, rock, and Cuban music. Ribot is also known for collaborating
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 0x1786822e21757c627fe22f059fb5a1b52e4de54c2778f01fc76fa3c4e6a94798. 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/244df742-6631-426f-9933-8c362e5d1406.json and https://artists.proofprofile.net/proofs/artist/244df742-6631-426f-9933-8c362e5d1406.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 0x0e07ac28e205a1c642f3214786dd894bc84a4daace3f5cf3d294f7e6c593c3de. 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/USAT29800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f1119617286ab9aa246df039630f4658b2ac1210365dd8775c781aef8474bc. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USAT29800298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0152ecc88e535e5a47d60129cb9f9655ad0060a1b14e732934d2851f4e6503a4. 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/USCRW9913408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9d5bb780692e3e67b2f2126e4b2c7167c1703cf7f28413460454dae3dd1dc3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USAT20000415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647da65c7ec51f03f402112278da84063b7adac2d60f8b29e3bc24628e435e2d. 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/USAT20000409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fa31d2f86a31b7cf0c464117d441552cfd51c40138face5245b724272fbb0c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USAT20000412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6d2f852b145f19a263de45546e19112716c3c440fdc0ae13bd3df745e99509. 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/USAT20000410.
Subsonic 1. Sounds Of A Distant Epidsode
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c943ac4c9e40c4fb8450b9714062091db380ae88cc5a55a02ee444d84fd71f7. 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/DEAM80800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677d31dfaa39bc333ab94f3b4a400ed4a3c48c268d3a3f88d5ea643fd9c74bbc. 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/US4S41010047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb018e162b4e2bec45597de777e95fa1aeb698ba5b03226337dee749cf7ee8d9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US4S41010048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cb803b0626dbb9e6640d72b43117fab5496e5e2fa98fb5c963749457ace115. 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/US4S41010049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db8379ba3d7ec67ba24f1cf966fc490195f4aa1f22f4df69c61ec9a46ba951b. 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/US4S41010054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc92ca74391c322191c304d949bd5f48c78dd2f4d4350ea692e3fe80106882b. 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/US4S41010055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2490e4e3f3fcbcade5c7cafff4764ac1f02cfaf410d575c6eade667970059a7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/US4S41010058.
The Militant Ecologist (based on Fischia II Vento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e95f6acfb31a8e3108531fb59ab792508c238877bf719354ea85b172d3584cd. 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/USEP41744001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be72f92f772c1602c6cd7b2e0ce3cf79b82d3375b4a00f6ca48c28c0aa58a64. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/USEP41744003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23c52920432579f8975149da0bade820be1022ec2aaf78122ba4893fdc958f1. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USEP41744004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e64f70a3ebe5721451c06d8add61a5615a3350806f18ffc8fb4bf41a262d11. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USEP41744005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26764eeee8b31281e366d63ab4dc56de14c027ea02e01e22ba48f2ed7ad42478. 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/USEP41744006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aad804d25770bec852d598704eb82c0b6ef55ba83f02358a7f2455dd9242a56. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USEP41744008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e629a5e4c96f6aedf788b76dc53c92965599a2c01695ee2fb62ef910208607. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/DEAM82300131.
Fahrt Ins Blaue II (Groovin'in the Spirit of Jazz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f37ebe38c32b24350853064ed0b272a5d65a5122eff80162009bdff4e9fb76. 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/DEA891700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ac47817b5f9a09d04f00a01d610a7ef8b463799412f01e90abcc9e3604db37. 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/USEP41114008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a426940fbcbac7fc6bce62e2ef65a4d691645ab2ef9e2b40d89de9f0b3c182. 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/USEP40814103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bda89b7ca8aa4bf65caeb47bf0b0b68bb80c51633feb69f7bcc654b7a1805ab. 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/USEP40814105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3f5feb1d81afaa155372f96298d7ad1c972a1ef27e61c36f631f2641e41e7a. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USEP40814102.
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 0x8a5e4c901c6e66a868b5513ffd9dd054d47d108b27daac7d55494cf50c1b93a0. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/US27Q1061884.