Le Club was a members-only restaurant and nightclub located at 416 East 55th Street in Manhattan, New York City. French expatriate Olivier Coquelin founded Le Club in 1960. It was a playground for Ne
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 0x6e9c0fa0f1236717852a6b1ec7ea20bc415a58242a3dc4c93211e3b0d031d805. 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/ef736f93-31cb-43d4-a89d-2a6934bad91e.json and https://artists.proofprofile.net/proofs/artist/ef736f93-31cb-43d4-a89d-2a6934bad91e.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 0x24f4aa617f57496dfca8855c5bb38d5289f508207445fdbe5e09ea4abee3525e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:32:24Z), 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/FR0U91700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9815103daa47721ec0aaec647d65c6889b698ca3f6641420f1e0fff8c4c07b3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR0U91700388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cf906dbb6b7322130a203119f8bd1f635c23a0aaff864e8bcf3344cacb22ad. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:41:08Z), 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/FR0U91700383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089166fe65a28f3c15ee02fe8329482b8d02416faec8e11c6401ae78bd5c98c1. 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/FR0U91700385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fb097ee215a10795e03ae8dfd84acfb4d56fb95b412e6e6ca03803ae56f581. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/FR0U91700387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b88bf1470aee6cc35f15916271055129534048c0e587a877e7a453f417c713f. 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/FR0U91700389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c0924527c3731525e2c3c0f8d3668b80a500f4f3115adec1a9d639408ab1f5. 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/FR0U91700390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54eac19816175528bad298ac85ceb5fc5bed68de4bb4915cbdc419587b66ad3. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR0U91700392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8647a450667dded222652598d3f8f9cd346484a04ebc7c7acfd429c0c08d6240. 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/FR0U91700393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8296a69275fcfe670d6a9989ef748bfe0ab00adedf17bfd5dadcb443f6692678. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR0U91700395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139cbbdbcc943814f4718e955aa807200286e8f5a5c544fd5e82f2574e26108d. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FR9W11809851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a257717cb4f401aec9ad42e996e73ec796fc1e6653f5bce1776aab4c841fb69. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:38:56Z), 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/FR9W11809852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792583118a7190d8796e0ffc68427c64e6752fa0e3ef2b64be44d5b15ca817ce. 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/FR9W11809853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1bdcf29fdbd66c64e400a66d172c98ac6b3fe9fad1b2fa0da2a70c3d1a0f18. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:09:17Z), 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/FR9W11809854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee83f8f523248a9628d3a65d98db8c69fa8a1ae8fd2739a17b3314acf168d694. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/FR9W11809855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1394d98a7bc67028124f7c57a86dd1e20851834401ff6b00a5bd088f2c60fd17. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:10Z), 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/FR9W11809856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c3757b2e6ff20621652f3f0a31f64bd6a3022158c07c03a38b165289146100. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/FR9W11809859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d822fa91b29fa7749bc0cb3b506f99ec818222dc5e160e52cbd0a14519a8882. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR9W11809861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf05510afe52259307e94a3fbf34e077ee58e70311488781f36aa0dd9f01cca8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR9W11809862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f4da595e734906d942d0cc3acc4184eb4c143b5dfec5e9bfa5f97e4c41cf2a. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/FR9W11809868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03535ba58f949721cf7cae903d2f8e01a3685a7b19385b7c8eb1a466e7518495. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/FR9W11831683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17da62ebdea6a0fa98d3789d6d8f6cbb7344ba7db0018c19caa60370a0ceb68. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR9W11831866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726dd98672a69cf3eb368a381fbcc2a0989a24b4f553561777e9a815f0aa4410. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR9W12023919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1021e04d5295aba2534c2ba9d33ec31168fdc197221ab3ef74c464c4fd0e252c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:19Z), 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/FR9W12042195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2f8d2b674769d6beb56e9a2b8f6c93cac37992f6eed2d5f479d6b825a2c16e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FR9W12042524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17da62ebdea6a0fa98d3789d6d8f6cbb7344ba7db0018c19caa60370a0ceb68. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR9W11831866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726dd98672a69cf3eb368a381fbcc2a0989a24b4f553561777e9a815f0aa4410. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FR9W12023919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5037650eccf54d83a253866d18f7863901bb74157eedff9043737aca73451625. 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/FR9W11935931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380c02ece0e8b447723c4fd1e2aaaf319704041e471a5c370be5952edaba63e6. 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/FR9W12126273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2f8d2b674769d6beb56e9a2b8f6c93cac37992f6eed2d5f479d6b825a2c16e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:34:05Z), 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/FR9W12042524.