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 0xa6c88a8854ee2c6e73c0cd1a3864d345cbf3b2fd01467da6350151f0dddb38dd. 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/08980e42-b67b-43c7-af00-98e717b09b55.json and https://artists.proofprofile.net/proofs/artist/08980e42-b67b-43c7-af00-98e717b09b55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kbrozethys Presenta: Losttapes Demo (1998-2008)
Sin Justicia No Habrá Paz (Por la Razón o la Fuerza) Kz
Traición & Envidia (No Te Quieren Ver Ganar)
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 0xeb2667906ee724968be98f99517cf4ebd7f7de6a1b674c1c9620ac9585f8c898. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:05Z), 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/QZZ7U2425620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728182fea4c2330c761e4504ecff7cd989f2cb9fc4f242a5c43a33db707fedf4. 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/QZZ7U2425621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7fe6a51f00d3d2ca5cf007aa2222d3670f85e8f673a43c770f2075879e8b33. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZZ7U2425622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0556bf1f5dcf61f7cd9bbeec8bb71845240cd379ba75cd9334d3faa23a67fe7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:41Z), 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/QZZ7U2425623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9971b761903686751117bb2ef55bf2e3e965bfc5f9602cdbf3e5e1c297571f35. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7U2425624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7341a00d0d4bce4466b178a8798caf2e9867da4ae4af82964009bbc382db3eb. 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/QZZ7U2425625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e59ae093b2f83ebedc6aa82f084e4ceb7e188cfc0a79065130fa60c22156e7. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZGLS2525803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ef930e4bb5e8fefaa371838f4cd0bdbace1dc1efc748057b5ea2ed7eb1da4c. 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/QZGLS2525804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5767dd4359f406529243735d325a3dc9dac43be3a89264a941913b75de02e80e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZGLS2525805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6272df8c5eac6f5a4bbf2017a21783e5053e727cc36079a842aae51bea8b5bd4. 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/QZGLS2525806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d31c175e5380a104e271dbd2fcf25ff7bae3cc658864750d2dfa9a42e802ca. 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/QZGLS2525808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6af4a6a92b1d0d6a33de55bb0495c6c18efe60788cb47fc6b9c185e636d3e21. 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/QZGLS2525809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3066a32bfc1d36f98f997de0446cb7bdee7dd3b2e56279ec369dbf5caf62b8bc. 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/QZGLS2525810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acfd3f06fd328bfd6645a7f85decddb8aafe268ff6993375f4783dd85030d87. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZGLS2525811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a722eacf491fc02a89880ae04f8301cff0ef78d02628d69d930e60057668a15. 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/QZGLS2525813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd761f074fd71347cb852c0bb610605068d1e5d573d0dd3b412dc786c30ae3c4. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZGLS2525815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1365b6d6246ace1199d1078005194e1ef1e5314d903609f4bf9812a02aad46a5. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZGLS2525816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4158178bb6414c689b07a6d5430e5892782bb0fd3ac8f3ff7131cfe930f8fd30. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:05:34Z), 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/QZK6N2596969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc618d45ef141568168b97ff4e9408bd4f10c74b83b27494e39a86dc37c089492. 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/QZK6N2596970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5bceaa94b965efd75c3ba26f2b00406d42bfae1dafe505fb6aef4dedf9cc78. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZK6N2596973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7cd8c419683f36e37280ea7a6ad1d961b314d0f597e079ed2abe9e8a6b416f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZK6N2596974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9221067f467a73a0e8ee35430d07cf4184e98644f988d4137fbff862fcf19849. 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/QZK6N2596978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cc23fe34e66b6309c01c9e32060286c04c4f5437ffd3b8ffa280b3b08d873c. 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/QZK6N2596979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885121ad022e843dc75162280ac5a000fd034fef7d8dbc3d807bc608c7018765. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZK6N2596980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1068d1fc56661e9bb4656b4939d37d9c3b3a4d0ce89420fe3549d3fe4d7c2e1c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZK6N2596981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dcd1cc590d0bcaeffbeffb26248e1d7e6635ff137a800c91d84991eb6e0ad7. 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/QZNJY2545400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9f97982a7b0383b7d3564aacd961be024a70eaaa9109af52cdfdd17893edf9. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZNJY2545401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66caf7f8f9bbc11f847001dec8d2dd5c621c7e2ca8257af7f8ebbc3a8e002af. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNJY2545402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffe79f80b15533e80b957ada71ca0a2923ef46e943f300d704b44212f289998. 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/QZNJY2545403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a16c58ec77702032138146f5140dd0c29c3a532eb9fb3636d2c449d68562c47. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:21Z), 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/QZNJY2545404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c4d00deb5f72deb436b04a97286fa31be420a960b74c75237fd8bac4ca29cf. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:23Z), 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/QZNJY2545405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6798ad1f4e540e3fbe682c833064f47b7126e70f2f425a9f2468ee45b988718b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:19:03Z), 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/QZNJY2545406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae37dd30a55e305ffa48432bda59672aa6e0c5dbec18a6d6029303d6a4acaa0c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:44:34Z), 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/QZNJY2545407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe129d537acc0fa2d9433e2c435fcf6e750607607c7819bcc224a90c499f7381f. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QZNJY2545408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30972772e8280534947b7e8dd53407729acaed70385b278432d9bf69fdfb364. 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/QZNJY2545410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa111d87b37804f3d7a978d5d74212951a9ea677d0aa166eb39e1b07870ac6c4. 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/QZNJY2545411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e9672330cdd3b4215c732e2d376ea4633e1b4819bd48c73e7a8b906da96197. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZNJY2545412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab31d705babb51401580068f60792848c9cc9cdfbec76b418fd47e2a325152cf. 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/QZNJY2545414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f598ba0c51efe456d1daacd67444447a0bcf212a0c1ca0a344043917a60908. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TCAHP2335474.