Blacko is a village and civil parish in the Pendle district of Lancashire, England. Before local government reorganisation in 1974 the village lay on the border with the West Riding of Yorkshire. The
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 0xdf2ebe81d2aed55a4ed9d0dcfac5d015edf2b5f16449224524f2531a2af84c44. 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/f74fb1f8-7b1f-4f8b-a0a5-1e1fb8f60292.json and https://artists.proofprofile.net/proofs/artist/f74fb1f8-7b1f-4f8b-a0a5-1e1fb8f60292.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 0x518f1ce93b899ba37edff493840e416b703194a623a474800e5b29f16db2c287. 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/FR1HP1400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf6faf4f195dc76285953db3b65580201c63e396f8fe00faaa7640a03439284. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR1HP1400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49164dc77bd8e8268f2b70d75e469ba07a99e66eef15f2715bb570b7fed34ec4. 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/FR1HP1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef41283c1346ddc2beebf196fd5839c49913f062d24a4c120478b8f79ccbfa6b. 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/FR1HP1500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf6faf4f195dc76285953db3b65580201c63e396f8fe00faaa7640a03439284. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:28:40Z), 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/FR1HP1400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c33c413f74e7a5f73ed41578b5308a460002528aeba73b1b4a59b3a3170141b. 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/FR1HP1500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c8834750257c4284d90cf673e62a9a53f7800c462388038db3bc92f387ff39. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR1HP1500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27278eac8ab4c66146cc700255a11486ae81e9c83248fc8e9b1e276971e71bd4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR1HP1400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eae4a3403248b86609de5b5eb5b1e61370ff0fabd6e847c5fc893aa7369134. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/FR1HP1500150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b47263d64b78ad3d993dba2225e4c2732788e3f9adc4571b69c7c37555a7664. 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/FR1HP1500170.
Dépasse tes limites (starring Joey Starr)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6adfa0f6b13bdb264b4dc450f7830e6df7ffdfc04a3c583eeec51a707e0fe01. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:33:17Z), 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/FR1HP1400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47115b159707bab63af296e9d1bee6fdd5cd6145e65179fca7b61cfb1f3182d1. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:08:07Z), 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/FR1HP1700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0600c1eb12b83d9c44faa82a9f6745185bf286eeb1d407fa06e3fdf284d89a1d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR1HP1700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabde3b0bedf6a297037ce78d39952ee007c07d12660ef39a9c913fd923005f73. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:56:16Z), 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/FR1HP1600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f75a60199439f3c3bf3a9fb2d85bb6ea9933e998d99a4442f252375be2de2. 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/FR9W12227585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952586f7165157ef8a6eaa0f2e53745f8c0c08b6bebece4b6c303b1c00b3b548. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:51:06Z), 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/FR9W12243975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4052983a8001391e4660c1d6f421d2d47328cb087c8de8244010baea2f3f1e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR9W12245712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235551edabce5bdcbdceb0a91d62843c8379d4791fcbc7f5e564aee1e4c23d2c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR9W12309822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f851693d3a6c44b76ea1ab8ef03e072150f126400d64ec3b7e20dbbd2780d9. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR9W12309821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bd0de4e2f70f4682aaef7901733a9ddaeb4d58aa488e7acc96b48585c5901a. 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/FR9W12323148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4dd3f0a7f3e4f984f01f276f89d2c72626dde1106c2e12ab816f7359646d8d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FR9W12363543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060d3b40d2884943d90730db91ebcaea667294524eeb6615658439de97bccb2e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12413683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf3fba759201f08bc6a2a08f0de6fff9030e0824d65e69fa4326ee021a606b8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:07:05Z), 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/FR9W12413680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77bcb5e706ced6953dc48c332aca2532a4465dfe82315891c9e8b7bc5f2d7ab. 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/FR9W12413688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcc368b3db12bac427bb98ebc018b51770ecaa30650388795b0c00411611b74. 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/FR9W12413690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86bb7d2cd043ee39898de2dceb85ebea760a123ffadf928ed77495e88b16bd6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR9W12413676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848039cf2997e2b4eccf5a1bc14535d6dfbf51bc01bbb283e5062eeeddef6e98. 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/FR9W12413677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bd0de4e2f70f4682aaef7901733a9ddaeb4d58aa488e7acc96b48585c5901a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12323148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950ee9dd5383108ec3cb98c91cf8376ce0d90b4b6a76d1d8ab28194e097e5e10. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR9W12413674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795dd2fb9a510f1d46a800e9ba9062334f3918e79c825573288e0b0d7115ca3a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:17:41Z), 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/FR9W12413678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0a4652215a5973e1094dfdc91f907aa13d7d6938bcb6ef22cb6e30abd7d896. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FR9W12413681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701345d29c88b6b7cfb75946b3a5ba0377ba73cea764537ff550328197e5a60b. 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/FR9W12413689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f75a60199439f3c3bf3a9fb2d85bb6ea9933e998d99a4442f252375be2de2. 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/FR9W12227585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17481cef0ef62dffcd4c79e3fff111a2e6fce670e09697120cd8f19bb39d41d4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR9W12413675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b635676b62ca7e550cd90cb90c9cb4e0b8c328614a86094b9fd5795104a4c5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR9W12413685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691400ab5505de294282a8421434e21d4e3ffebd1b3b9337ad2a13ed50e14445. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:09:24Z), 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/FR9W12413684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf3db4cae12557011b53aabd84e1042309336e3cc64d99abadfa81e589a7d27. 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/QZS7J2504543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fa9b18bf3dc0e73705687e97fe8ab8583892fdaf563711cf5d67aba6b6d168. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR1HP1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1f5b130db5f7c06c2259a22ce565610b56075bb5cf728c5b8be0d7bd459709. 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/FR8GV1709030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1f5b130db5f7c06c2259a22ce565610b56075bb5cf728c5b8be0d7bd459709. 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/FR8GV1709030.