Campo may refer to: Places Cameroon Campo, Cameroon, in the South Province Equatorial Guinea Río Campo, in the Litoral Province France Campo, Corse-du-Sud, a commune on the island of Corsica Italy
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 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 0xcf4fd664a150272a1f8c89f679f8201a3a3d1f94604d689511376ccd55c89627. 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/0f77cd0f-da94-4154-9e33-7e382053e7fa.json and https://artists.proofprofile.net/proofs/artist/0f77cd0f-da94-4154-9e33-7e382053e7fa.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 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 0x7050a3fafcd1bd6c73cfade38bb3b647b1e5453cd38812deb779273295fc4421. 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/UYJ161100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf51df847ecf314fc73fac4f83b9642cc7e5c8a30c8cffa7ae85d8ea27aa20fd. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/UYJ161100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10fd388b36d93905f9a7882bf19f8e01122a2e1b4219cbdb097305bb7b20677. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UYJ161100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7186d9c0e747b0cefc2320990466e13a493f850c4ad38913b8da042a1c2fbb84. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/UYJ161100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66ceca375551437b3ecf088dc92cc4ca42d237ae611a06a4097f8e9f7d7202d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/UYJ161100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb7512834a2269e53d190001002c92b9d291b5dd1211c32736c7ddfaaf5dce1. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/UYJ161100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadbaeff2b0ca5d12482c0a0fb64a1cb9460c23a54b339c57961a52c005c1a19. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/UYJ161100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7050a3fafcd1bd6c73cfade38bb3b647b1e5453cd38812deb779273295fc4421. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/UYJ161100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44b49a99fb8f7ae877e77d9c4478e0de717f18b68150dfec446441d5c905dd8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UYB141300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c6e6ad3207655b71ffe62dd9a415ce1f59ff672d45d9ead667031bea5d0725. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UYB141300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c62477f6429e2339a4d4b712dcafa3bd410bf5e45c0572caa655e49814ea87. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/UYB141300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045e8ea906cd65d4902d75085203938027b5f6c845003a8b0396ccfe7c957417. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/UYB141300404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d02b9e4f275cea5e672ac52e351f7c8514aa4dde3803e2d6139be50e066c0e4. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/UYB141300405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6444576396c7991f3b39b77e1941272547f48d821fdd905e2e5bf4638f0089. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/UYB141300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0816ef148f00279d42bbfd23346b171d6d2d45aee3fbe121bbae2be2a5f4890. 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/UYB141300407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fc65996829a44d03440e4dffe241657e33321eea8e85cd4a41af9e2b8abeb4. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/UYB141300408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4978793d79cbe89fcf2c04a7f379e11ca4b8b8e72c05ef5a2efa64462b3e45d1. 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/UYB141300409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfd2a7b3c0317dee2bb55a58fea2ea2b9b738ea63655ad7895f8a856bf76495. 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/UYB141300411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba1f331d91365bcaabbae057519fbf2a13a89604ed5f9fd397783ad633de2d5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UYB141300412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a16e456066214861dc1fb437a1f01390867d5d0a4592875e97fc2c5eaa737d9. 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/UYB141500904.
Tambor del Cosmos (feat. Gustavo Santaolalla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb78841e4edd4c2045183b60fb8679bf08a8753a90b1e4401e4da3de6c541382. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/MXF011700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3ab2656618c6e7ef1a70007e1e93058db7d11b2208e750f2e71a63cb237f94. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/MXF011600418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf473d3b764de44f28cd18c0335b5dfa8a09a2d21a75e75bb62516a47b5415ab0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUL10200682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3469608a21f4c4de0c2907d40745302bd2afbbad05cc4d9f320d13091ab6e5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUL10200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba63eb50c6cefaf00c4ba60194e0e774dffdf9addeb332fa3921122bead9a74. 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/USUL10200683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898553a8b3fabcedf5c686dab6f941eab360a6565f8b53f7c50a8c7be55e7dee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUL10200686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9b03e4156d2404dac5eedfbd2b4a7e1038271c49f9d9d955dd42d1eae98ba3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUL10200688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd391f89bdf369a0852eb8d0831f62b9763874d1968889f533be24875842d13. 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/USUM70506807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25909aca4b1187b92fcd6a866f98475f60c076123fef3fc8b7899507e76e781d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUM70506808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7899053fdd4dcbdd1362b05ca4dcb0e61a69b674f57864c1bbcd2aa0d81e26e6. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USUL10200169.