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 0xc6a0e109da0a6e83552b2d70703ebf877fd15a8a638fc2aae6a90af5d606d243. 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/de30556d-8c0c-44d0-b43f-b10e84143316.json and https://artists.proofprofile.net/proofs/artist/de30556d-8c0c-44d0-b43f-b10e84143316.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 0x51f750f7e1a630489de999cab1ae29fdd3d703fa86f7752be8cbc1c35f85d778. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:26Z), 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/QZHN92324638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8703f77fc1f5a6a97e37fd572afed6cff7662fdb9fd8be15091f5ab4f9b0052. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6M2367368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5dcabb337c3bb9a6a479e3e174b860ea71977b8f65b834585eed4ebbe909e3. 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/QZHN92324626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f6d7ba07baca7b1b54c243269e5651b8c35c27e40cdd5b8d5b8a138c960756. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:58:29Z), 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/QZHN92324629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900315028a37a2f61dcaf3947d13e3b6627a9f545ef37789fcc479454497741f. 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/QZK6M2367370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c12045e5c5cbb710b95e943229d01b4714a5b2d490817898a4993ed95c45b02. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:42:54Z), 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/QZHN92324634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294ef9733286819d4f021568cc2a1c713a2dd7301fd078a1cce59b4122e7514f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6M2367372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ee03ffee0d17f9fdc98d854c85b21f39a2b79b3d612f60dc87a5fa89165583. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHN92324636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb13f2e7fc0ebbe6873e95ced1da2c3fad07c140910e93ba2814b52f708ebd0d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:31Z), 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/QZMEM2381214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d95f981ef8f0fce572d8e9589d3e9b79463b6dc88c0eb015dd5104b059679e. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZTBB2339732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf59bdeedfbfdc450f002b1d1564e43cce8d6ebc1fea4d666c5df1e3d1df69b3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZTBB2339733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8758d8ce9a9eea1160064ae15baabad31c0ec2f6d7960f15e21e07be28fc460a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTBB2339734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32299e9bb940413047d82fd8886fc632429fa94343f0687d5fdc174be44ff262. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZTBB2339735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b49a09c33d5a2599d58591eabd6091f2f17b979e9b0958ff825c335c37ba39d. 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/QZTBB2339736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733a0b2404b64b35c60c3b52ecffe478e525af087f6d3981734e441c8e6135bb. 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/QZTBB2339737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8816def49f37e0a35c3a52978379b1ed8a7e8dd7b775ec2c22f8d9e3deee9cd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTBB2339741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e8089cb6735cd27eb25df9dedd1d8fe13b7968ef5eb830a3a283cf0d639b6f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTBB2339742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2b5f383e9b9456698db771e99461f26a459ec677bcbeffd60037febfbf55e9. 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/QZTBB2339743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393dd66f6fbb7cd38d3056d6039c66f4a810845190529a1f28ef438fc4dc0da8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:06:21Z), 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/QZTBB2339744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b2163da4576e18e2c4a90ec738d194a3e6fd73cfffcb3c512fc2f43f824d36. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:00:06Z), 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/QZTBB2339746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60288e6410f940c7c1da4a7b548ecac66eb52d4d5b45bb31c462bc9416b08f0c. 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/QZTBB2339747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f2f7abb168ebc1333d9cbdc34548dcca5f91c518cb6132de8c20dd453c543c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN52455149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efe6832cce69c1567fe07eb92775a853bf3c99d1d1c09e5edffa90a8221ce42. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZQAY2447344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c52da9d8858f116ec11ff2b5788de5763d2c33407cc7e3d52cfba7e1f910a85. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZQAY2491760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6da25195165b80115882c31d898a825b5a22a529936c476ee225a61408a796. 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/QZQAY2437861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2754173526ddf3bab19a52ae5e38701a53fccf2c61c2aa6d68ac9980fe73dc5b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTLA2448022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd352f6306634a4cd234a92b60998fe67a4d7e556f5b40aae3d1416ac298315b. 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/QZTLA2444852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a7768b26266813cca63d299ee08735e335c7a79bd4078ee015a26afdfd27ef. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:48:45Z), 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/QZTLA2411803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5686f10e2a9d9e1bfd2395e8dccdc47da7ad000ecafd0f5aea3840cb868f1931. 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/QZTLA2477649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b406538e97bb5f10baf062c07ea91b11233b86859df0a1d0eda4b71af40166. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZTLA2423622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1226ccd2c7569ba3088de385a2e6d2cc3d6af77a26876b2743360523f1030a45. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTLA2439460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153e4ccb9ef7f50d4aed86c7cdf0adb1678e2162d9888aaa720ed788d129ebba. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:33:20Z), 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/QZTLA2486756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17492affaa3aaab68531a05eb61e2537974371b3981cfd799b101b363feb2c7c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZTLA2437847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d64d501bbdcd1095457f9922f9292cf6258e0819edf9940565b88975342b284. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZTLA2409761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cb7e4400f42442b8f239134ae24550ee417d40bad89cdd8f81dd456d8c1068. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:48Z), 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/QZS7J2490490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baa2f78c10b2b995f84e1fdfaa49d52f6afbda46df9a93fd12700b6a7b663f3. 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/QZSYP2409132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9465a6acaacd7f84bef070c988a54099f6020781e64e130769b6d33332fb9907. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZSYP2565724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088b74a608357b94ab6a22c09398966faf8c2cf946a2f4bbfb674da5e0350119. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZSYP2578528.