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 0x1959c5deb7c58deeeb048ca1a4a0bbeb662f7c5850dc650d7e1086b9faaf4596. 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/e45dbe40-0ae3-4fea-8fd1-84516dbdde69.json and https://artists.proofprofile.net/proofs/artist/e45dbe40-0ae3-4fea-8fd1-84516dbdde69.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 0xa572784e2ed41d8ca56ef1608042f512d99c97bace2d9bc92fbad64ebd6c703c. 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/QZNWX2273844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff911e995681881a07309c9a0060b7e3fa883eca35a865f4f2f9eb640057b489. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZNWX2273819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de4dbaba0144c3f9f90f5bf0c04b70debe39e64b279c4d472233c20ce8c7d1e. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZNWX2273840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178708ceec04e31ae363f861d104f4fdefb8a0c89a9cdb39904fc5e6b67a45e5. 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/QZNWX2272205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f53d0ad962f88594c4cf4c92c74b47dc940ab6a7ed880c826bfaea2fc07f2. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:24:34Z), 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/QZNWX2273814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dbd1a7f7c8c9cc749b080cd0513ba29701539b8fccd5f395df2296b0ad804e. 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/QZNWX2273843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dab90dc4d06e9b490160df7cbee644bb14d29d2ab97bba678e16f609e24512. 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/QZDA71874577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e3942fe978b5479a7e5bfb78d0623b974e3432e1e420703ad87bf9a1233cad. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWX2296072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bc70b57c156ef6188b116b7855e233d2045dac33b5dd2acb6358a6ccd4b554. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZNWX2272197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84d5bb023d01243c9ebcab046fad2298e28db248d93b1163484feaaac5ef64e. 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/QZTBA2298108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746df258b1a135a69e97c25d6b08c593b85894fce10c793b85a8156ba27f3ee6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZNWX2273845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d65a7f5be2c5379dd594ea43c4f2463178bd41eb6d4754177bea48ba6c3aa1c. 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/QZNWX2298062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaad30b2a57b6373a165367d6a2a29a750c4dca974ffbc359e97b2c9b69b8e2c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:46:40Z), 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/QZNWY2217597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a1d97a96920a3fdbee32136baba1c31dcb28fae609577a54d2b0349f674b75. 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/QZNWY2200585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac14c5289fe028147bbbd2793655deed74a7e285cff45ecef0f96fb2595d91b. 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/QZNWX2273852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72b5c3ebaf7783a3956f34a861e97daf9d74028b64b4b6359e1255b5f80c8a5. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:10:38Z), 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/QZNWY2230763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b312f7e4cb79c1d851a3452046f1f330172278c835b6944b93e491b810c58c. 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/QZNWX2295878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e953249d7cbf435ac99e0ef300bd0b0e1856c90c9e1febdec15b42d4107736. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNWX2272194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27028d39200434336e21bbfc68b09032346456d80faaf8fbb65addd07c8b54ec. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QM42K2146375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c296b041791ab495145710f49ddf60bde046dd0eb035e57ef561e6dde1d25db. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/QZNWX2272182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0570235d774b5671363c51d3cc10d5d9ba14958ede21f82d75c2b24c525ad525. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:05Z), 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/QZNWX2270516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eac41114e1e0121f990d7bd35d42ff5cd8bb368127094eb0ecf843be08eef0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWX2272193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1a9b89f80dd9bb2d244f63ed9479a0300e2187ad574f19177a484149d3def1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:14:29Z), 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/QZNWX2272188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a58754183541d609fb0b28c8a4d444587dccdafa6ba16a3c3db922e7fb862. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:54:01Z), 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/QZNWX2272196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5b3c7d512d24ade5ee671858014879eff5b284834e556083506421b2f91950. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:40:29Z), 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/QZNWX2272195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bf49aa77ff4641be6784db02b9ed5078ec1b3e142fe597a8ebe71d7cd2789a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWX2272198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07da4549f97a095c4b2430b61fc041333aa833104af31aa098a9fa301bff1cd1. 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/QZNWX2273816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2839134309182815722182bde3a4cac5773fa87f214a7e21824981f736a36806. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:56Z), 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/QZTAZ2285109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412ab95f3fa8e3b7870f7ecd1698b31fe8600d22bc637b97b111bca3ff9c8064. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:46Z), 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/QZTB32290706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e382fde30997db89a33dc018da5bf17b40fd6b0611bcf406d974cd59875244. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QZTB42273480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08567fb0c4212e104e0c58602c9acea4af0fa6988d041e3aaf8ca25a44535a5a. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:48Z), 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/QZTBA2235846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697746cfdd0fd66ea6026a2d25d19abfea964caf6822f5fbad41813755a3554c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6F2474453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3945c98b663c36168eb3fb3959410cb40050dc57bf3ea986e2a491c0ecfe1c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZMEP2470671.