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 0x27df7e65c7e13c9746a1f723a2ef2fe72ebad357dcc082e02eef0063c538a7ec. 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/f761c182-6443-408e-a92c-25259017b19c.json and https://artists.proofprofile.net/proofs/artist/f761c182-6443-408e-a92c-25259017b19c.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 0x1968079ad816402230ae2329cceb6c9ffc497f996a37b59b90d22a387e702fcc. 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/MMA031909266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab81a24e504ac683682edcb7d18c2f51afb07019f5fe64ce28b0a58b76dca83. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/MMA031909267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3724df24de3bcf0da775df6b768e585b7f730ce811b831b5e58b86b276224229. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/MMA031909268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dead8637a81ec45658f27133603eb94593d9d80b9e047a9312ab411ab5aa067. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:10Z), 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/MMA031909270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f31eaf14f2af12e6f819fabe8e89e7da6b7e95669025133c4fc703217d7417. 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/MMA031909272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b7766c5e69ef67d8678600a10cfaf8a4e58a3bf147904c3d3e3e1911bf74d3. 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/MMA031909273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ce4da8f6d90887049715295df6e9558d2dac94f8b59bcfd133496b27f1e2e3. 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/MMA031909274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18113c1ffd57c9794759f086aeb5bf8c9066de0a127058b1f04abac0fc3344c0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:05:18Z), 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/MMA031909276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9608ba4fef250e0b398a405f036e022ef5d8cd34c473b9434e20255e74c523. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MMA031909278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77f3607e1ac50d1cd88e0f1113e408cefb146ef640ed81e66725cc08465be2b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/MMA031909283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8beab0bf4d508b47a971ced2aa2cb0490064e86547e713799232f8a79f768f9. 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/MMA031909284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2b47da7488e8cc68d8364490de74b44a310cc8fc3e23a52162b56cd33025bf. 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/MMA031909290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaecea744494f391e14d96fc8243da3f24a899cdfff77af95e0fdf82191f1c90. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/MMA031909288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b29999c67c2c65a7e229bb4d607cedd0f7061fd2e9e6ce8e47fb6ddf8def0ad. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:18:51Z), 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/MMA031909287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c6833245cb1ce4ffa2a0de9b29a201ec7ad18908afe2240dae04e37dbdcca6. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/MMA031902587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4ef751d223c7bacf1001be7ca3bfad874156402f28f4c3aba7406075c8d5d1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MMA031902879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a0565658e2c6f10879262051514b6210df812c331e157d525ffc94c11234e6. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/USCGJ2151195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d8770126a56c97b274e318535817e3443153f2a6a3be2e3099bbe83da91768. 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/DGA082291164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f7c156c3062bef73458acbe4263d5bd4fa789215c80dd13d774e63d7933b58. 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/FRX762396676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae1bb6a83d4e7ae21d4e1e2e8150d844e371c280b4a376f8c611ddf6dc3647f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:07Z), 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/MMA031909757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1154e0a42a918f8411116814f69476f35e464fe45791ef79f930337f0705bb74. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:50:15Z), 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/MMA031910421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0777307be08de0f4be281dd02d7d6416b426f1e7628772164a51483fcaadaf3a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:22Z), 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/DEUD42427511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8a441c58007c4be0da87d37e7c166262fadfa96c7bfc187e43e8b56d467c9d. 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/DGA072421012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc725e55f8f35f6c7d0b68b456e3c903edfd042aec05a6d7527e93e96b3121f99. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/MMA031913145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbd83689e0d51624ace17ed375f87a9c8b87fffc01c8cf783bdf8fe1e3009c0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MMA031914816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdfd87fb8f7d1ea9aea95669f8274d81df75522df9112d7e6b3486158b87357. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/MMA031914817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddeeb5bdf5cee34a4d579884403e74b7b53666ebfa95cb61699d6496add4205. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:33:39Z), 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/MMA031914818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ad0252ec5e80805683f992c7049f4ddbf2975f1e5cb43d92b4cc58a8e2a1dd. 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/MMA031914819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7f7cbe50f05ee04e43e15a3101b3e6ca06df1b6146da299d7ced8775f0f859. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:19:58Z), 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/MMA031914820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7ba84a74b6c38533a4776b1fde847973d1ed359ae1b059937c2abdd9e0a13b. 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/MMA031914821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d79c6fcd9b8d9d4505603dfa898dc983347b771716eec1ed37246c976f5a2ee. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MMA031914822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3fa85ae7ece42194c85c87e78ecc62cdfaa3b49b42d4a224240d46cb8f90ec. 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/MMA031916425.