thumb|upright=1.5|Various kinds of mirages in one location taken over the course of six minutes, not shown in chronological order. A mirage is a naturally occurring optical phenomenon in which light r
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 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 0x35e356c8ca52d89ec249c5053f63a31244337dedc27acc0e69b0c39d08f65744. 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/d5248d31-4a3d-4f7f-99e6-fe06d035b77c.json and https://artists.proofprofile.net/proofs/artist/d5248d31-4a3d-4f7f-99e6-fe06d035b77c.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 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 0x7ece586f5af833599a232f0316b60eb74fdb5f816431c0d7e48c1c8bc8f403f6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR96X2126964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf4d2858c192e8d22e135de8276d06b41f4208bee4a913a1309390fb14b61b1. 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/FR96X2126965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fdaa4286b6f885a1cf9422f446b75c4306d7d41ccdee662de50dbe95652fea. 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/FR96X2126966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04658f8a16f179fd4591ee7ca276d3a671e010ec1a7164d96d442a6c5ddaca3. 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/FR96X2126967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42195ab2dfb2a13dc0e637f3ccd9dd2797af05457e389f8d1c5ae1f79597a10. 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/FR96X2126968.
Я не хочу / Эта ночь / Музыка нас связала
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e49b821ffff8e06ef33d84bd123bceb38a1ca7ef7679a94c4c73f49e095c66. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA072466194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde993e64854f9697994999c6479895a7dd23163a9252c5281647acfca7123083. 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/FR96X2127705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323415ab491cb2127cb1ba4da700fe4367a536aa8ffa3e5489fa8da720c2d5a0. 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/FR96X2127707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf083d513c6aa97ddef9d77138036f05fcd34392779de6e8dd97a96bbcf2f7e9b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR96X2127709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63405a7888c038316795a1b9e37d705388fb5a73d0293dbbcd4b7e96094a0e22. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/FR96X2127710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ddd49fa7fc0ed5701b48455ac26f785f7d5851354e05037ca9888924ad2cf2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FR96X2127711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4450c87d684f472052e2c2eed9d983d1aecd11577476304d08579d670b32b411. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX201659487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e1aeb501f715cad07d56a0cf56fbf67cce6523f5f301f5ea876685c41a674f. 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/FRX201659488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e92d6715ef9eea5c11fc598a7a0eb10d680df22cf2f45ef407be1453e6f50ae. 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/FRX201659493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f71deefb75d2ea6218e3f0244b7a13109474cff158eedbb31cd158c49202ed. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/FRX201659498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e93cfb901e3bd4cceb71bea9ee413229c5ea5cd24374e81e114fdc4f1a65b5c. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/FRX201659500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77723aef33ebaa61af296548be860bd5218729c559a3f809f0ba62d8cc03b676. 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/FRX201659501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae27e385b494c5483ca0c9917daefa50e5729fa235205d06d85d1d696d0aa24. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FRX201659503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316f6921555cf76d1e737f4fee505b4b3ba76cfce6db7d3ee17369eb4b30c55e. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/FR59R1750671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ba5eb40e5f2020cd7017f20288712e7dd2ca64225549e6b10d1004439f1ec9. 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/FR59R1750682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5038eb07edc554cae2a881ebf354d9dbf4f71a392f992af1f7fc0e40be680408. 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/FR96X1759749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f7972a8ed96844e9c0f494db9e7831a4df663aa2bcf2ff8e723cf3a46a876a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/FR96X1759752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70de8c8eb75fba577d5b7b456260b7863856ef5e6b8fc7d02b6ad607163078cd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR96X1759761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bb9cfbe29173f7cde1714bfbde15a2298fecac7079bcaa15f6e217dce8d7f9. 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/FR96X1759762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345d3319a2ecdfe06762e00734e290ede8247032a52e0591661ddcdd06c7ab7c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/FR10S1650859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a56b4a76fe5af869a24139bea5e06ce434dbfa4c0802fb23d1c85f472a4e37. 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/FR10S1650860.
Легендарный концерт в Санкт-Петербурге (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb74a04b669d4bdd5be34d5f9ff69c9a07ec087df18bf5fac5c148107d419d08. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/DGA052406951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeee069feb7eea4e721d5f0bd32452bdf690ebf41b0c789eb8cc4969ca598e46. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/DGA052406952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c962b0d313e1f879dee4be67bb905bb49336e8602617be6fd104d95184f5c22. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/RUB731301687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cbfb45374c8ec2526a925181f51cf085b8090422aba50518c7e6c78aba082b. 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/RUB731301689.
Лучшие песни (Музыка нас связала 1986-1989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf37c2b82622d30a76bd656c8da82a9da16f6b83febe1c634a29bda90ee5f37. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0P2389859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4741c9fc5d82418b453a7e2e38158c7ed7428da24dabf27d2f8ff18de8eabc45. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/DGA0P2389860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f438532633dec8dcbaeac2c5eea577bde9a4d553b20521046f3729b6b966dee. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/DGA0P2389861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4517dd725eaa3be97edbed38771e8d277e1720156809300d923aaa4eacd675d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0P2389862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b25c679f3d309efa8a1c037405d2e69f564f2f8b11632a59c79958439263848. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/DGA0P2389863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888f4bea7485fddaea94813d86eeb71166b3be0c6303164dc534a21c5f65f216. 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/DGA0P2389864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791a822a30b362f524aa5cdff0c5681694721e25bb7ad7819f8479d175c32e82. 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/DGA062432425.