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 0xee012df1171e1ad707a2b0aa95809b31aaf698b401b2c696baa16ea6924cd722. 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/f47fb9ab-60a3-482f-b312-f129867f25ba.json and https://artists.proofprofile.net/proofs/artist/f47fb9ab-60a3-482f-b312-f129867f25ba.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 0x52b6c70fa2a5096799b596330a7ef6f8e0dcccbd6cd5721a2def92c46a1e4c9e. 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/FR6V81594344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde12d65163cc8d4ea639e1da10875c847e1ab3f6683655ce867b6ebd777b616e. 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/FR6V81627280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758e1bf4915ac3feb385993be9c2a687d679d3dbc0025e5442168b8eee91d157. 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/FR6V81627283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab1eff3abaf34713badc3b8a54e543f361b11f2a648ab307c26f13b94d1a1ee. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FR6V81564371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c0888a113c2e0846b9908926436d0d3de9490ab8e3d4fa6ca05f8930e9132a. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/FR6V81564393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229e5a2d2ba6a7a52f0bb731909542d65aec3f3f50877c64e4b9302dea2a8e08. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FR6V81627285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc6f2b208e4a20b8ecec16ebb1b406f3de66fcb40eb4a89e74b39eb4648a93d. 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/FR10S1619252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f481b8730a315d453bb878bba124cb9952a82429d54b87e17643d953920291. 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/FR6V81582118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4537e51b80006587499bcead050310b28084194c497743c1237b1ae5d0cb3c. 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/FR6V81582119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea71913b0aeffc3a4e9f631fe2e8b04ffee9d81442543599bb559949075dd24c. 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/FR6V81627316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8c5093d364aaf72e07ae5559f0ac7fcbb41ed88fcebd85b484e776b2f2be32. 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/FR6V81594340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129acce57de13b7ca086a98bf41723628c541fb8694dbddc0cf1fe8e42727b21. 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/FR6V81594339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978dc9669c2830b5c2e03f9fff828e3c954c9715aa84711cecf2ad69c1f01cc2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/FR6V81594341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dce4bffd406a21b280eb104b894e25ec0b4c4a54b4e7e050dd504ec10a9c82. 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/FR6V81580898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360d659dc79c30286e84f0e9e27780ad0c50bce6bf2ed5c35f462d25fcc83982. 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/FR6V81580901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c86bef79853e1a8a1d495188688dd5b7c55d3d3a7a9838e7a56169179e0104. 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/FR6V81580903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0239c1fe81322874da5e28171655d3ec9b917b5539ea5f5716a557ab6f48390b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR6V81580906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bc8565f0d2db522fef34c793d48c1d7fc2396d03e1a0dc4b9c36197cf241a0. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FR6V81587219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46903883e3d9b3185c2921dc2312df72bbc08e157e447643ac7ede70612a5e73. 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/FR6V81587228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a572f2709e97f13f362094a0076476e86c10fb1d9bcf8b94425c29449f06bc6. 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/FR6V81573859.
50 Лучших Песен (Большая Коллекция Шансона)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4651150293703466799644cef13764032dcfbf26f0b4d00abfaa281a0611b13a. 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/FR6V81580897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6779d4dc5b5418627edcdafd4d7bedf5946753ec3c51a264799ad324780678a8. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR6V81594345.
Дембельский аккорд (Лучшие дворовые армейские песни)
50 Greatest Hits (Bol'shaya Kollektsiya Shansona)