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 0xff9dfa8e9041797ec80dd17270547eb1821fa937c0c5ab172606968c9f1804c1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ef1971e-4ace-4350-819e-a77230ec2a79.json and https://artists.proofprofile.net/proofs/artist/9ef1971e-4ace-4350-819e-a77230ec2a79.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 0xe062c87a569e87b694fdb9279ae9adc4108d61a96024d54ef7c95a6c5361cc4b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM4TW2172479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65655902e83a94f5dea76755786666ad3e4454f28d4b08b41e3cb90173192fb. 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/QM4TW2172482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a284f65314635a73ecab67078d4b365b85dcb6a169a9cf88eda816ccab34484. 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/QM4TW2172485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02e53941517bf33e322ef194a2965fea1e396b5360edbce68a6c189be9b71df. 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/QM4TW2172488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefc3dc79bce33d1f79bd156218b1f158ffa6b76dda06d6feda77e5fb78d8346. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:53:02Z), 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/QM4TW2172490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4623394c99a8bfa4e7d3b8c70b6f0047f77ef29d0bc4c7e08d50f48f049da7. 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/USV351342929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544b6f7d84a48a1ef936e0fb76459aadcc70529328ce8ea5428775c06f101b3d. 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/USV351342930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a613fc3f1d68597f550f52996f69b1a4ffcbf3de2998dc9970f80bfa502d0f. 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/USV351342931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf49d393d2579c872cad79d01cd94214e1ccd9f7ce62149f3632669ff8ebe66d. 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/USV351342933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc0cf831a9938bd7fc63f18e20256918fa7cb785495f9d0a090794220308ab6. 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/USV351342934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9884d9ae4cd259dff668eb255d364ab80c1e23fbb7a0597337cba213d773fafb. 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/USV351342935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb2ae969cfe3dfd24976e9363fd6ba623928aceb3755591962a1d3f15380893. 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/USV351342936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bf1612eab12512e6949c37304769ecaa755a5fb51d64f906b2c299b8709b69. 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/USV351342938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8c884aadae29bd42ad59956f0d3ec6497acd6ff1d97d91fbf1d2d490b98799. 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/USV351342939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8625a787527ee2e423ac77e8b9bc7bbf1a631ded777937d54c7b337c44b228fd. 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/USV351342941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cff3cda1693c9864a5a73723d0fb0693969cc759b5c9d421ed54fe39baf6ce9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USV351342942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985b86971bc306cefbdc46bb53713adb8cfcb19830a40d9d43dde6efdf037830. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USV351342944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77584be0f616c6e091e355b507f9983a1c3b56b9764b06bf935a53de6734dae. 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/USV351342945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c38bf8e08a47ae172e75f7370a7b3e637331f4b62b3e42bbaa8df597c1ed5d. 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/USV351342928.
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 0x8b75e983a7882c128d741c8f14f507bc0a27323aecf68c5c4f6198be53cb20e6. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USV351342932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb6e4bb85423a2847372984e61028a0d7c1212c08ecae3127e595d524a39b72. 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/USV351342937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9b598c48d02ca22d4119f2afcdccc06551c1d3c8779ef1e7fc4a3ccc051e3e. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USV351342940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe4d2f1d84573ca078bf439d330da01c10ca32752f5aa2cf6e5eb3b8358f4dc. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USV351342943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3700accd424b1ff977d4d4a31dc9fa8c370b8ef12ec36ceef10bdd11fcb10c65. 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/QZHN42077555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b2291fab90904e5d4c79d7a7a821a9959373587111ed3527d8e80dd9639169. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZHN42077556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129ec9fcd05eda5cc22f65f049f6d5e2ae11f23b3cdc13194a97d17946bbf2c7. 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/QZHN42077557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb51f79b54248496eb5275c7e98067e31a7c8ab5ffad7734aad570ab3960108. 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/QZHN42077560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31e1cfe2f343daa0a3a69467b43673fb2d95d1a89908e368b7f1929c69a7b0d. 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/QZHN42077565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b184f5e4581a212ded597502938e2e3498fd9981b6805f2bf1ff1b9741cdf0. 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/QZHN42077566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8f0abc13ea06ebae45fcef54b5532752d6e861e7da01176fce38a88d4fc254. 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/QZHN42077572.
El de las Manos Magicas: Underground Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c968f2704e98c46276706b1344649d4edda8bf0e01e20b98cd4b392a42479f9. 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/US7VG1930585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e6a729522a2b1d4df0440271af3bee5ac092559c416b53a6d5ae1b01bf8475. 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/US7VG1930586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4751d2acae7d939014e894f257abda9f206ac3e0de12bad3744ab18048a0190e. 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/US7VG1930588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06988c66fedcefe749fee2ba2f1cc8a0a1bc6cb4e5592b32541b76a6e7f40c4. 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/US7VG1930590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bc6908e4104193f4706103339e25ae42824ad4e8a3efb307c0731d7f8d8067. 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/US7VG1930591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14912091ce11439de73c8702282573a550de149616a22ae1a27afd10d674c3f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG1930592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050632b1a792387e2e7d69ff23363dbdb200bd0800b568983ce5ce033c64a7a5. 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/QZTAZ2279754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fee6df4d1bfd29bf942a33762fee04fcae9bab7af03bf7a88c4c1743d1e4066. 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/QM4TW2093700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5477ae5917a3a989a8e81b580659db84fea34aa630a9622dd40a7e561aa2682e. 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/QM4TW2093763.