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 0xd20a17105d5c111faee936f6674d7a88e94fcaa1a5d020683069c0238c7c047c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea00db1c-9910-48f0-bbaf-0f8effff974c.json and https://artists.proofprofile.net/proofs/artist/ea00db1c-9910-48f0-bbaf-0f8effff974c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Talpalávaló I. (Sárköz-Bogyiszló Népzene táncoktatáshoz)
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 0xc78b4104e45963495d80074e0f64714ebb637844cf78a26084739de5c53f124f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:46:41Z), 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/HUAL51200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06c0e2559511005c6312093d55181de66ebc5aab078d4befd2b91bc65172732. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUAL51200002.
Talpalávaló II. (Kalocsa vidék Népzene táncoktatáshoz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fe80a99903981acaddbf400c4cca8cc7b24c38aa8e75ba28eb8c61eacfff81. 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/HUAL51200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7469683c8cf219441f571aa83f7483b5609723e152718d1c9dadd637640dbabd. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/HUAL51200008.
Vajdaszentiványi Táncdallamok Tóni Árpád Játéka Alapján - Felső-Maros Mente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6df3e42a605edb556d6a29ecfdda89a30299200d4ea2824cfa2fec24b3ca5b5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:59:11Z), 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/HUA8E1500002.
Lassú Csárdás És Férfitáncok Bonchidáról - Kis-Szamos Melléke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872b5d0c349f9ec4beb115e88882e10a92b48febc9d293190fdc6b61966ddbb8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/HUA8E1500006.
Nádasmenti Csárdás, Invertita És Szapora - Kalotaszeg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a63a087354514b96766c84a210bf61a8f9391172b4d6ec63a7492bfea2f3bf. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/HUA8E1500009.
Esteledik A Faluban... - Tura, Galgamente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005d7495e498d5aa9ea232197e10696141173303622f2ef5779012008401a5e6. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/HUA8E1500010.
Talpalávaló III. (Galga mente Népzene táncoktatáshoz)
Talpalávaló IV. (Felcsíki Népzene táncoktatáshoz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0b2354d5685d215760536b01450066438ba3ed599b7cb3c4a7b29cf9560526. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:05:35Z), 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/HUAL51700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0225497b63be37efba07a5cdcda2056942bbbc55229065c623fb2b2dff200948. 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/HUAL51700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fc8e5198081603bd89b4b9e9af28787c9f7af3e93fb0b5843db6a44f685686. 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/HUAL51700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38c12656cd95408e21c1762104b25b50cb3c2bdfe0ce0cdd9afec2a8ba0b359. 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/HUAL51700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43335dedbcbd7a99a2234b6ac1f33fb2cb44dc113caf31560332b0db62b6e5e. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:53:52Z), 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/HUAL51700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d7b69fb753cdce9c545855c44364187aee92d4eff8f9b7d0b8f3c0ab365187. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:53Z), 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/HUAL51700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984c504611aa84c342fcf17a02fb35a040e16f8502a2e8557ebcada9651dc1c1. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/HUAL51700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15ddc9386b6d30b03496d863732298ab8eca47ae43d3e2cee11b5cf00e48093. 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/HUAL51700024.
Talpalávaló V. (,,Polgári" táncok Népzene táncoktatáshoz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baabc1faa567ffd96057b4579b119c4707b31593fbd34d1b6191d422d00e8c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HUAL52100007.
Talpalávaló VI. Rábaköz (Népzene táncoktatáshoz)