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 0xd3622926bc2a90d6be35c2f02b2ada95a8c2fc77e6737fcd3dc9957c63896d35. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdc1dbfa-2f33-49fb-8f4a-9103116189d9.json and https://artists.proofprofile.net/proofs/artist/fdc1dbfa-2f33-49fb-8f4a-9103116189d9.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 0x85f99db642e845b370d56e44527b4c3775d02aca29e0682679c37a4a2045811d. 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/QMDA61333099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145d2ff3df5190c8debf88f3be306e46baa73a0ff9927c50a64384d3e9971f28. 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/QM6N22013794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc78719ef692b60ddb405d69a92e7aa636ba1234a1886585778e625f84c14eb. 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/QM6N22013791.
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 0x4963d83ccc597e2c5c2843d71c49fc8f9c6480333d34f8590dd6f8011c877dda. 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/QM6N22013792.
ASGP - Guitar Sam Guk Ji (Asian Super Guitar Project)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc2c89da4fe83d8ced426712deaeed44be5f04e06d2f1ba0397be8aaf78dfd4. 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/USYSA0701002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4b82f1c38865544cb1669df2eacf386d629176c311ea2e98c0604da77f0bf6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USYSA0701003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f094e8750c2edb8e2c5bb63b2ac0db1f53d71a5eb4b1485dfbee036b2d2a619. 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/USYSA0701004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279631da7c8206606a96724f28cd21c213725cbaa5c097dc73011d012d0c23fb. 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/USYSA0701005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dd7dee1910fc8d007cb57dd4b398eb08f856389656e667e62fdb3c94ca3c5f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USYSA0701006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69148bd0c2863013ae95c6174b8898df4279d318b81d4afaf5eb8c38293598de. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USYSA0701008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac0c8caf4ec50f7e25bf3b0cd64a43529a6a3a4731a14a6645056b56e905855. 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/USYSA0701009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bbda0032a098178dd81b1b9472c14fe3f45ce665ff53a918b4cec3f540fedf. 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/USYSA0701011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569ac30f4f7f4996a4903051db372cf87509da00bc4cf68a96af0d6529ba13e1. 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/USYSA0701001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a74b450007e0576aa53fc6a11f9e743c2d2aec073a0b353d88c300d7bb05251. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USYSA0701007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3f154a6dbb085a6c0db66d75a8dd48aef8123f9046e1b0840091895ad0b724. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USYSA0701010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b9713771958116272b734cba0bd9160cbc0e5a152ee98e28f79f5c272cf4fa. 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/USYSA0701012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258644273ada1c010caca4bed05c6cd3f68ce7ea1c3c81f1a8285b36b5908132. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USYSA0900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0351b58b55db91ce13b0d56ca043711b0d71ade1d4d68f706ad1e2a564ec4e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:06Z), 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/USYSA0900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab463c6d9bfd71daa46d88826a7a416143e4b782af68f32ea584a91fd4702cd. 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/USYSA1900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395775318d25949f5918040eaa0687bbb42bc354d11e00f20a6b35317ce69c82. 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/USYSA1900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4da10fca26af0578460ff536adb301e4415010ee6557abec56e1d3d6b8867d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USYSA1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28619be365761a6324275bbd20de9b62f90b16152029896b1ea5812a26bd1856. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USYSA1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624415b0984e7298c151258cd912d2c8ee17ebd408cc2c5a686362d577eb216c. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USYSA1900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5367661a0a8e63f9d6abf4995fdfe201716c32388b13fe07f6ecdd8ee530d642. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USYSA1900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03c01959e6c515162ed1f195e2e9b24fa740309803bbcc7243d72f42433bf8b. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USYSA1900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb7c7c67defd6a63052be94679640b0fe6554285bedc0c2879adf4a4108cb30. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USYSA1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a4f5b90ce424b226365de220cdab103d7e3cb686843762dc9ef129f756f0ae. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USYSA1900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaae7689ab39a85ddf687ac0908ec4ecaca32f5785f3d0849b5c41ebfca8559c. 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/USYSA1900112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292133dc9759d4e7fdf03fe5445bf037b48960eea8564ada095fe40e2db849ab. 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/USYSA2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197870c6df2a81b5cbfe31b25216633f8a7ba6282b0651e65a827a0e68c31174. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:33Z), 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/USYSA2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4098708c1f2314073d80fd8afb5a507e2ff542c5bb31284cc0ce35a6089f09e. 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/USYSA2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b6dbe783ff57fdf8564f9b3769159c146b7e92b0103ba009f68c86957cdefc. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USYSA2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a018cdc9a207b42bfec4a9f686ffa2172fca2a9452365a8591bec68c8527ca. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USYSA2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe23d7534a3fe9316fafdb558820b09736a0fdfdccc79c3764ac070b7325873. 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/USYSA2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8d04e21f5e820271d07d366d54e569c7d03b599ddff724750114ba73f807cf. 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/USYSA2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046a2dbbfe26db652b4b55edd173dd51a0429dfd0137f0b83fb8e947eb90588e. 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/USYSA2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fa664f873547c2bb40ab18d81da574c0882dcedc5f13dfbbd24027e5af5822. 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/USYSA2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8473bb7db64150550a7378e3401987a7bf65bb8c075f647b19fe8f47dd76cd2. 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/USYSA2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6899a3fd3d8c8d5240b5acf6f0729911c9b82398689b52343193574092b1df84. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USYSA2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016aa9fba268ed14d2b4fb7d152ce09be7a3daa4cf137117eb8cf7b3d4fbad88. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USYSA2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ea6cedae1cc103876cd4d5f681ab49378bc1c54d35d6d32aee38ae1f51915d. 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/USYSA2300011.