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 0x7083cd48708bdb542bca9ca435d037aa4d124f02f7099e8072a7b4596b0a40fd. 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/c35d1d31-5ea7-4779-af5b-98f6e676ba6a.json and https://artists.proofprofile.net/proofs/artist/c35d1d31-5ea7-4779-af5b-98f6e676ba6a.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 0x1ec8b7b486e0b67969f605f05c9c25a280db470efe515a1e143a64dc8cbeacae. 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/FR10S1679368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d73c53dfbdbd974c1c194a76b7dc6a4e226c8c5601d4453761386f56acb69d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:29Z), 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/FR10S1679322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584196d2d4aae0d0858191cd9e6f18d2ac389af78d7a262ee42c3cc19b2eaa68. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:52Z), 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/FR10S1679326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c705aeffc0b5386d6d3f36859a15c55879737e3f53ea1823c06b7f378047ba2. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:29:42Z), 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/FR10S1679331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236232a6ad5eaf549ad716724ac9b7230059373d5975bbbb2e77a1d42232d799. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:12Z), 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/FR10S1679333.
Ветер долгожданный (Редкие записи) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7aa6ce7f20be9ae3ed5971c895d9c8636929f07bd675859372919ff4e0ad8c. 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/FR10S1679313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef77abd1874051d5e81622c23e037568c92b6b9af465638daff2d953eb11e05e. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:25:02Z), 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/FR10S1677330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36a89df60973003f9253d46acaceef5f546199094093a8180e96905345fa855. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:08Z), 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/FR10S1677332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bc84c84ea245d8d0e96676fff1ad639715751237d3988b7ac6c97898d15e23. 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/FR10S1677333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a56e047df789439c24deadd6bc16ea18347c88873121d575121c19ad86a12f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FR10S1677341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7886692095df5173e10041beec21ea9e092cd7728ec22761fa221023d94dc4. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/FR2X41559246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21355bc93dc6f0575887ed2bb775b7f4ba5a27e4b56b43db04c0601de8e8a37f. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/FR96X1674662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4349ded01abfaa80999f1d8e4e4ba5977c67f40b17570782683df815ddd5fe2. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:26:20Z), 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/FR96X1674674.
Большой концерт в Санкт-Петербурге (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87092126252dbb0fb7b07ea6af610b465fa3fe3ab2b0127b5cd0c17f0cc8a2c. 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/FR10S1945930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44892f027d2b7f3a784f097c227d999f556b29149d27bfc240ee2d97c2acdfd. 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/FR10S1945934.
Облака. Сольный концерт в бкз октябрьский (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743716053df3b1e4f044c4af6ebed6e93a7c65db740da5fda5a029f495a03ff. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:02:45Z), 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/FRX762035591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1b9a36df7a9e4d4936aa81a343fd9b5248c1f143ec15b64ded87f29e70a29a. 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/FRX762035592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83029e8158aed0f59dd9cae57ba9022a9dd4173bf9d8b2440f740a434c1d548c. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FRX762035593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd480630063fba06340d3121916373f1fefc3297c72b0645077ee0a5d96db2a5f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:52:40Z), 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/FRX762035594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adc113ac72e20853ff417680634fb9f9396d55d27733c7b222ac079ecd275f0. 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/FRX762035599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0c3934833dd2814ca51367df4c117d3738accc99984000be67b6b1a56465f2. 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/FRX762035601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d5ea04adf090c77df0c2b11922c12759109e52f56fafd60544c95a0044fc98. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:21:58Z), 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/FRX452186406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d46d799e65159b714271a741ab0a6d187a3aa9ad771cb6a4c540e650fe218c5. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:01:37Z), 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/FRX452235487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd995bbb9ad707b3e60701864e6f7097aee712ededb486510c309d107a13674b2. 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/DGA0M2322854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f70e5c6b21961ab4a0026028fad05010ac99cf0ee397aef172f888638f50b5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA0M2322855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9facda3260e78e12bce8227bbfa5ca6b2f31ffb86885d09bbda7393673cfdc9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DGA0M2322859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a36f808be6a6ddd251ad10aa65895826fef3cb73f697e5b00e9701bf7a2f6d. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:40:27Z), 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/DGA0M2322860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bda155e187d356ce2b2b2b65f5ddd010d130cddb9c62f043bc6ea25e3ca53e. 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/DGA0M2322865.
Сольный концерт в БКЗ «Октябрьский», 15 ноября 2023 (Санкт-Петербург, Live)