1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x24b1e05f6b56b7d32a9eecd4468d0f993a7236357852fd7d5fa8e84983d9b251. 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/f09e223d-f9c9-406d-827f-abd613cc8ce6.json and https://artists.proofprofile.net/proofs/artist/f09e223d-f9c9-406d-827f-abd613cc8ce6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e5e10d984914f685e210365a781346532e960602d7b679830ec20acae5365f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/19pFOIeWaKEGCJZDP2Ztez.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/19pFOIeWaKEGCJZDP2Ztez.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e971239734406b9bebbbf496b83b89b3fb3fb21261427d8d1dc850ce608928. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2HpKWgB4BJJrLr7wmh0aei.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2HpKWgB4BJJrLr7wmh0aei.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7951631266f203f21db03aa93fbbc9f02ab85b1ee39891639318c76428d1979b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Co6HFOLNNcIcLoEpHVCCk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5Co6HFOLNNcIcLoEpHVCCk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd813c6b1e5233619fb804dc0819ab6ece2498377708fb32b5d85c023297adf6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/68ymlcNCbVVQLaAuavFMXO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/68ymlcNCbVVQLaAuavFMXO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e971239734406b9bebbbf496b83b89b3fb3fb21261427d8d1dc850ce608928. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6HnyOn4Zk128ET14LWwzrk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6HnyOn4Zk128ET14LWwzrk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936b59f6d07215687bfaa11f90af6d7194f37cb64680d447071f905fe48a0aff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5BoUf2HYwf6FhREYrEi6XW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5BoUf2HYwf6FhREYrEi6XW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01e34da4073f6605827d520de9fd87bcdf968245324d7a53e0e2c2e6a681197. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0HZw2A2pwYHzAI3yoK16Hv.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0HZw2A2pwYHzAI3yoK16Hv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb39fecfd71119f07bd98bca2d147d81e36b50add70f63919791552fa65d0d0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5qu4r73rAgU2Pa9xdmnByw.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5qu4r73rAgU2Pa9xdmnByw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7d31d9dda1902594e6747354be7094fbfb3e74c78fd8695fe1688fb38055b2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/54jgQcEXvH5Jh9sd2jE3Gb.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/54jgQcEXvH5Jh9sd2jE3Gb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e782295fbba0d61eb4b70e00b0995b2836f7234010bddf73ee6b916884c26ad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0hBNbW0OoKu9NNtEZWc4ro.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0hBNbW0OoKu9NNtEZWc4ro.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66481362a155bc2fd2c8bf71a1f9967406c4920ba229bc6db4443fabcc796a5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5FUiRlqjChqdZloOMaeJkH.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5FUiRlqjChqdZloOMaeJkH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e782295fbba0d61eb4b70e00b0995b2836f7234010bddf73ee6b916884c26ad. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1sv0BM5xldSVOygwc3R4jw.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1sv0BM5xldSVOygwc3R4jw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d1be60ccd82c7db0efb5484234b3da934921b844215f2bea3d529742a730eb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0TVCEyaFhYjHUeN8y1OoMz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0TVCEyaFhYjHUeN8y1OoMz.
{"copyright_id":"0x047105bf7cf81cdd715e46e273308bedb5fde4ea68b6ddb48a65a29b8b2f33a6","isrc":"FRX452305649","name":"Nem szaladok","registered_at":"2026-06-05T18:28:12Z","spotify_id":"6TJ8FKHVV7YzyJq9BIQBRl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047105bf7cf81cdd715e46e273308bedb5fde4ea68b6ddb48a65a29b8b2f33a6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6TJ8FKHVV7YzyJq9BIQBRl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6TJ8FKHVV7YzyJq9BIQBRl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e56eb7e6fd3bfff90f9a1b5c726165ca7108662945646bef7571f46859d1a06. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5qAYeysT2iqrzLOpUjsXTz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5qAYeysT2iqrzLOpUjsXTz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5885d64fb4bdb6d93e17080fc8287ea411d5a2581ed815fff969f46f5f1ecfd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/51VGaJxdSKbMe0MgUz77Or.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/51VGaJxdSKbMe0MgUz77Or.