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 0x34e6b16952b2383f57a8a938f0a2bc2d662d0b2d0f39c6935e4000e7e2c1552c. 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/f3c7ae8f-8d57-4d3d-87a3-f62c70480101.json and https://artists.proofprofile.net/proofs/artist/f3c7ae8f-8d57-4d3d-87a3-f62c70480101.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 0x3f401636729611c652cc7bf30964f8a9d2c96468dfac0eb1fab8efe244b72874. 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/QZFYX2387480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e1c1121d856eb0175f66d411d4ee5fed845accd8262a43a7237bec75cc307. 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/QZFYX2387481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c3c7542069b368379913a452b73f59ba93f014ae322a7087456db5eaddb68b. 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/QZTAW2205799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d73f8f465846404b5ad7ea5527fa898758c470fe3e9f012656a5f4a1fccadc8. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZFYX2387483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7eaaa7ce817c0b786298d721dbb150f7a56bea06983cac851e5223eced49ce. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZ5FN2470968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df630b061eed7cce0323db3ebf2b91fc2d674ced8e728f3f2198b257587b432. 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/QZTRX2429038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389a29b4b6744a5c30ca4b11a9a599f00af7406442eabeedda86bcf34bd85cc7. 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/QZTAU2457776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c1196f86db5a086269d42f3fd4a6ff2770be62c886598aec70d277ff2ed166. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2457777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1bce4632d800840a400e6424d27dda3a3e4e460706b72c3d0b52087a5f135e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAU2457778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc226ded807df746754fcff0b6c7425761704fdb550a9c11c007d10c0e98d9d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAU2457779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b1e404aab0b16afc17d825a9666ec95d1a9d4ea579c914b8b08f1c9f3474f2. 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/QZTAU2457780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2778229792ca85c1be5c81b65ab75070ee70b13e12a192ee68a9b4f7d3372c95. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZTAU2457782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1254e640be002f6f6df0f9bf72d792679b84fe3a23835aa8a65458bfc51301e0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2457783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7d0b3475d0c2170f03759883decf22e0cb61574bf8eb518726af61dc21fe27. 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/QZTAU2457784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909e924f24a21eb69f288f655b64388a8212233e5b99f166dbc9a5429070f907. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2457785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0c3f623deb98ae6218980bf161bb6e81c9205fe3e7ffd6dba48214fef31ce5. 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/QZTAU2457786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7082a80ae09110d328d196891476c2571422b8dc44151c4ead49bc4d7285b2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZVEM1856485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5829ae252963d9a40388ff50869952e77799f69bf08052535837410b829f8fd2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZVEM1856483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9328bbb086da14c1131b947b376f2baceeeda546dde58ed8566d8107c116c02f. 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/QZVEM1856487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9839f9f122f68ec9421aa45fbb67e9e1ca1baf64701d09c2d35a9d23d832e566. 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/QZVEM1856488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08900d3904158a8741a64b21d4bad87ac1810ff77f7ae2892e2394c94feb155. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZVEM1856489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ab23004c1b8dfd5bb8c8f821a4dd36ffce543e154f9d16da6418dc03fe8bee. 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/QZVEM1856490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb331b0aaa0431d4fbbf8fbecf4cfdd62f0502ed59ed4d07df9cba7c3cb3fbc30. 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/QZVEM1856491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f78d9b533a6586c682c08ddfe70eaca613b7f0866d2b7a82d8f6ff07ee16355. 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/QZVEM1856492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea18a0a5e171852fdc4e40c16badb13f4dc15bd0a7c6a6c653e6ff2c0f57a189. 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/QZVEM1856493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d249c285b88163b4795fc18d72f482e67324e8bf1cc632d1ad2c25995ad000. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZPEW2585882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b941120c8cc6d7cf4fd0aa1d92ae36bdb2c3bcd7442bbf3db3cf59e4727cf2. 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/QZNWU2536175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d249c285b88163b4795fc18d72f482e67324e8bf1cc632d1ad2c25995ad000. 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/QZPEW2585882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84281d717446ec0f549bced51c3920768d24dcb1977f045e43c840f188ba89d6. 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/AEA3A2020885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4744a4c5274f609f9a4279e0c2c2def37db27c9cc7d13ed703fa1620aac9bc8f. 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/AEA3A2021857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4681889e1428160428aab275c585ec091a3eba95e3a80dcab5c658ee8105f6e8. 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/AEA3A2091074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80e8267ca609e3a81d7561a5e3e4f839449b5bdda8ddb9e35d46853ea14a1c2. 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/AEA3A2034254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6240c254620842fa5c30f8c2a7b52a8bb28bf92f8c8bdd1968695016fd1a3cf6. 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/AEA3A2022693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce68f96b0db692f70dbbeb2727c38f221f44543f466b27e8b7cd33c4ae71a96f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/AEA3A2074850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb156839d89377d883d9590b444e42941196e681fca300ae2b5a1534386f0ea31. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/AEA3A2087697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8950c9f19e7d1b93556126e69dd56e11e7958bfac7f2373b295c97ce0ffff276. 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/QZTAU2561351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1478bb4730c10101dff652089659913b5e66d59832b59e26da107c87b2d76d7a. 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/QZTAU2561352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a70da1699f363cbf7af4caf7cc4e042bb28c29dfe34f81cc6848c738fcd71dd. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTAU2561353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4178408a56e9944cf55f3a6f2eeb016f10886062192f0b89858743de6b04f5f7. 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/QZTAU2561354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d249c285b88163b4795fc18d72f482e67324e8bf1cc632d1ad2c25995ad000. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZPEW2585882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f1e16da6d50b7f12b669d974853821eacdd027456bd60c881085b1a0cb8eed. 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/QZPLR2589926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b941120c8cc6d7cf4fd0aa1d92ae36bdb2c3bcd7442bbf3db3cf59e4727cf2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZNWU2536175.