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 0x9870c61dc40181b703f312b77fc40aed36b3a5c3e9071ff3af7ee82b705f8ec9. 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/9332c7f7-adb2-462b-9020-4740c77212ed.json and https://artists.proofprofile.net/proofs/artist/9332c7f7-adb2-462b-9020-4740c77212ed.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 0x54a6ba90c9eac5b7044c9d21b80635493ca1cd15215896ed2b75b5dd234fc461. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:50:25Z), 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/QZHN71910705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a33ac54475fbfcf09907b58d0bbd968d0c18391bc5c30eca70157f4334ee584. 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/QZES82089823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42976914a93e88fa4bb85d9025fd88d1847579d70a1397d3fc2b71ee067d4de. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWZ2099317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad5695642567c15435c22af3671057ca3964d6766b485451534f0a9102d44a0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA42186162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e752e78feb6d7591afc68186f044c650f897a35b72c3779202d375ceb03bb42. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QZFZ72245702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46440eea6a5d6c07a8679365c9248454a72160185819df1438489953fa893d27. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZHN82320568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9cc9c928a4e01b129e88626c83ae3909b8b08eaead7010c406476dfa1a6df9. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZTB62366076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d88e3612d400156bb3a88d1629d1a172d9158edc0710939045e24c84eb23ff. 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/QZTB62366077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee460b31b7b6d71b84703d4ef27e5a60b81adfdee29a755c61f16255cb6a8af9. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZHN62466548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c37a7e9be54451da10e341241e35fc92ff6ecfa3914e393aae2b0e256177023. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:10:55Z), 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/QZHN62466553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebff88d8d3a6eb16141fbc3e779aaa280008eb8490b8ce5cb42e7eed7ce8981. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN62466556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9ec2c869d9813ab6479470b1ea710a739f266bd63771fb8748f7ba00fe78c6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTGW2401165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f15688929feb0e22368c00f66e2e454aedc91483bede15a67c556d541ee2e9. 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/QZTGW2401785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f35af55c9800388fc6c41380dbdf6e7e8dd25d21b771c2f6b44ee77be8d9f6a. 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/QZTGW2403012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a4adfd298ecea590b1ec780bd4f6aaed9b5580caf9bacbe2e1ef01ec9184aa. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZTGW2401601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9ee5572a62924363a7e2162de6099236db5a225ef6c6480b9460c41ebe7e00. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTGW2401597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dcc32057a3d7786c6062953fa2c40a233bc0cf4165116ca4ec7c954dde305e. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZTGW2401598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca6378172ef9a455716440a30201a99c3de49433b46b89a7f3f19f0a591566e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTGW2401599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9ec2c869d9813ab6479470b1ea710a739f266bd63771fb8748f7ba00fe78c6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTGW2401165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18693b6eda90444f11d2879b00e0a5736a695ded81122eab0cf4ecfe8ba974b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZTGW2401600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a4adfd298ecea590b1ec780bd4f6aaed9b5580caf9bacbe2e1ef01ec9184aa. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZTGW2401601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2017a6c93357e7b255eb609600b6643a7c679575b22eee4e62baa896c4a29409. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTGW2401603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4786c58543ebebb85e1dc70f330ab36f066395280bead04614528200587151. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTGW2401604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13be93327a8e651326314e97625019eb7b0cdb81b8038482c06da73abad406ac. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZTGW2401606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bd23e8dc5dca45b892cafdca75f09bd97120e20c128d423639236025afc2f6. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:56:00Z), 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/QZTGW2401607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dd913374f73c89e7c7a0272e7e922afa85ae5dce5bb829f67c15e6a6d27236. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTGW2401608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02006a3fa93ae5f3f57b478f962bed598407b4a50fd90c08bf1b1ec024aacb76. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZRP42582168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b725c5a19d49d5f15e5237174b9e960c3a31a008d1df5c943f3a2b3e9ca284. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZRP42582169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaa7c0c44d1e9cef68959135d9474059faa78e5d6366cd1290f775f77779d7d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:30Z), 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/QZNWV2593902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16780e722d618ac4ef4bfa404630b4584bb4d9e064ac47819bf125db01f8e5c6. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZWFG2589389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2120da8b8e750a93adbf3eb5b868827d328d42ed3c091eaa752a38be24a75ef6. 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/QZWFG2589390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385a8ce50c2d01be2a95c294365c4eb3e112f6f665fca5de03c4f320241d4f83. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFG2589391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2167341aaa85aa24129baa13fa2300147278f083ae22d564bd69b49771dbd0de. 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/QZWFG2589392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec86d31c0b909f998c66c60a9922111386adbef4bc869e1c4c5a5bba3e1099c. 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/QZWFG2589393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce28ed1deadee8f54c5943ea264b713fa389ef816e3a7f825cb22a4f1966bb94. 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/QZWFG2589394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81028114ea82ea24ef6b8fa6ed7829a2707464c2b540135d7c9b041f9112ab2e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFG2589395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368558430656ec5d693ff22247b169e05fc2f4afadc79c729b945ad6f65fca2b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:59Z), 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/QZWFG2589396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831d92e28b8421e5087283043ef215adbf8af9fb2e6164b035d759ef807df36f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFG2589399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40b46ac4bf68c20a1e5c8610ba3b3cd6254068c571f4e9c027b929eae668f36. 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/USUM72120283.