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 0x51216a1a362b23b7ec5474dcc885f5857e2b4396365296072896fe83b45e737b. 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/aebdfad8-d2c0-4944-8a5f-90906e7b7ca9.json and https://artists.proofprofile.net/proofs/artist/aebdfad8-d2c0-4944-8a5f-90906e7b7ca9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
A csuka parancsára - Puskin meséi és orosz népmesék
Vendég a háznál, öröm a háznál (music by I. Bergendy)
Süsü, a pesztra, Vendég a háznál, öröm a háznál
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 0x3998897bc1d7f4259d681f0bb991b7e8b8f7cd0d73afbf057d6a3b770eb77009. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251403801 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a713dc6b54a5936afff2a59be52cd35cc88f8d8094b8616b9561a03b1ec28d7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251403802 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b58059b191f630b00659b3be6886fbce7c43b97ecea3b1990fde1d4871fa4e. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251390801 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ca166d8f8939d756d309a0b756032b1395467560ab4dcec1f7f06d60a1bb4d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251390802 — a six-check JSON result.
Süsü, a sárkány: Erre én levágtam az egyik fejét
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7adb73e129e9a0f053d5e5a57712bc9f544da84b543fc04b0e83876ccd21ae. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251390804 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d943138aa1f30118223e58637874ce1cd2cba41040dc5ef23af55657149aa7b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251390805 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e6b3cba5e2c0c20f4009e515af4a17be8b4e8db2b50874faa00e1bb814d404. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251390806 — a six-check JSON result.
Süsü, a sárkány: Én vagyok a jó királyfi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05deab16d3dd6e8e323a6a31b9f1a727ed5d34ebea2b928906da755f99221820. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251390808 — a six-check JSON result.
A mű-Süsü (music by I. Bergendy): A mu-Süsü (music by I. Bergendy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b2c42034f1b9e67dd1ab4da190af77462b415127b87f4b2b38b50bfe10625a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251403901 — a six-check JSON result.
A bűvös virág (music by I. Bergendy): A buvös virág (music by I. Bergendy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad25514aba6ed02a6c0ff38140030d6af1d9d37afab2f4b6eaeaa5c21c9d0c27. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251403902 — a six-check JSON result.
Süsü csapdába esik (music by I. Bergendy)
Süsü csapdába esik, Süsü és a sárkánylány
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0324eb49dab0927f5521cf4afa5a329476cc0e458563ad02a13c730531c1f933. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251409101 — a six-check JSON result.
Süsü és a sárkánylány (music by I. Bergendy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb922bfff1a84c0bde9c7c4f45205d9ea5834a98244a32b94eb0c20a52d5dcb6. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251409102 — a six-check JSON result.
Süsü újabb kalandjai: A Sárkány Ellátó Vállalat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61ba65e881cd01696698a67f835a5345279049f7d3d0e9454dcf6bae5c11b5b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251399501 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c137f2715c3a528baa8fde5d8d6006b02d96105b203abb08fbcf6dcfbb95ac4. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251399502 — a six-check JSON result.