Big Ben is the nickname for the Great Bell of the Great Clock of Westminster, and, by extension, for the clock tower which stands at the north end of the Palace of Westminster in London, England.Fowle
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 0x86164636f9c2dbcbb6299f0d7f3f5c69149afa9a629141aebcb38c275ccfced0. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70318460-b2b5-409f-9109-647fb8b81f35.json and https://artists.proofprofile.net/proofs/artist/70318460-b2b5-409f-9109-647fb8b81f35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Africa Meets Pop / Hiphop / Contemporary - Vol. 2
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 0xf797d87c52774140bd5e68d56eaa9cd340a3587183a11d9bee1f28272ad8dd78. 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/USCGJ2410719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5148b04fea746345bd391851676e834e4ff08c9265318112c886d213375e9c10. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USCGJ2410712.
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 0xb56a19de488273dc030fdb9f92aa46cbc454c2a5fb539319fb9668e04a5df03d. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USCGJ2410713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f3d675941f7d7f77ee411f3d958508c169a705d48e26ca6ae84bee65a59ed0. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USCGJ2410714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf464f7ca53e3cbd3c8441a4818869bb7bb5043978586046fa31fea5f2a21749e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USCGJ2410715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdb0d417f77705033c1cc635c0b2f7807825bc898d016e7eb284f8fb3c2e931. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USCGJ2410716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87100c11549576d36994ebd3d07dd56af33534d35260e8c0a4ff54e392f2f537. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USCGJ2410717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02149b8315400ada669caf1fc2cd3a36e926538584fbcd9c2950ccd876ffad98. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USCGJ2410720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94535463fec56531e4c390f7f8e251e30086dd2f58d8743646c81a0b9cc97afa. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NAA001800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb6b12ee4217bc50c92d6970412062a58c4a48239a80098540972d0e07c6052. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NAA001700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754dad3cd652bab0a7265f3be5acd32fb33d448c7dd32debefb70d112428e289. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/NAA001700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01c445e7517ba4c3dc371ed18e79d43d780f68e7f557b6e1d4333e9bb95afcb. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/NAA001800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb2fea252180b51953bc820e99755548e5c48a0fbabf47fa762cf06121b7ae3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NAA001800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0429b69206e4a092632c56219d0479262b00a205bc2a911a89254d78d825e29. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NAA001800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fd76733906a58abc9d112a7bb99d2e35203d0e5c5c6ecfcf6a2f1bf4d45bc8. 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/NAA001300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f84c3b00bc41168884f047fe0f8285716b55c1e57fed83fadae4d23a82a1a5. 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/NAA001300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefdadf833510f218ebe595259049f3be2640ee96681f8ede2bf5bd5c170b272. 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/NAA001300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcdd23b9242626a18816183c0e96b9f4356dee0c31b1ce9d4b5f694912a2d9e. 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/NAA001300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c305cb9ff2927ddf215297717db15da93307877da5161d2f85e68474e160e1c. 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/NAA001300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e492c64992a8bebd8e805dab3cd77abde06c8db2d3b028f623f22574c34667. 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/NAA001300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4977b58c9e7d4e06668e88412af1156858f3c3ca1402aaf0b9614d47cb72a6c. 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/NAA001300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b87dcb4ec4bb96eb67cd7bb568ee2814c6c476dc837d523095550ef902c28e8. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/NAA001300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69f6c32a8dd6350f96b9fd3b1845319e6c60747a0a0b3ce580580984eba1a1c. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/NAA001300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffffd77ecc7d8812e9bc484f94cc8439ed217d888699b91fbd8e4d84821f049. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/NAA001300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4ed2237eaaf910208a27f5d77d037ed0242074a0663547bf070837fd1175e8. 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/USX9P1141240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c2d3be29fda9a020640ba2f0326072323730fc43fdda8fb34f45125e196589. 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/USX9P1141241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf566ba57ae5d8b69f8af11e225d1499257affb76318c7ed8b89f884a3ee078e8. 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/USX9P1141242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1f54c8db51b2298e67457bcf2cdc0f84e6dd638a386b16d70e741d84c0d8b2. 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/USX9P1141247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bac4dcf461e53698a4b78c47cc6694c922ee9da334ef367fea8cd16a2b320d. 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/USX9P1141250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8d9e028d507c92c8e8b80cb9e2c516c7cf76513545b298458a3af14892d972. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USX9P1141245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83da9356e02a24eb320f9a89faf57fdc2395fce4b0d2b50d8ddd54089bc7179e. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USX9P1141248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dda51c420e612f21a57ce6cb7dde7c3323a6fe9715791e8d69bf0776ff688b7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZAQ360800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd745eba7092d5ac714c8ccfcc609ea76f876c53b4d8d4562290f5448797c7f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ZAQ360800112.
Africa Meets Pop / Hiphop / Contemporary - Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a00eca15f90166b3b818c9d1dd1a5c8199e9af68ad73e22bf3deb3195ed232. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US5UL0910338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942efd81c5a7635d6c07189f504d933eb09f2a2dc3922a24d012995b86f1cab9. 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/US5UL0910337.