{"copyright_id":"0x4dbf2efbab84b0536bc3db9e79659da42142f22d77cc4d3ddefc52be9d5ccfe5","name":"Adéla Hesová","registered_at":"2026-06-21T01:58:15Z","symbol":"NIM1784026","token_address":"0xff5f9dc1cdef5cea8e913b1215e0c1acb6a8c036","type":"artist","uuid":"d2c273e2-2b9e-4ffc-9a14-89c3f5a1b16f"}
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 0x4dbf2efbab84b0536bc3db9e79659da42142f22d77cc4d3ddefc52be9d5ccfe5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2c273e2-2b9e-4ffc-9a14-89c3f5a1b16f.json and https://artists.proofprofile.net/proofs/artist/d2c273e2-2b9e-4ffc-9a14-89c3f5a1b16f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ostrov pokladů (Původní český rodinný muzikál)
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 0x20f935475f9bb58430b8c91fbd31b0dc05c1e1de82030415de068175f0db19e0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA163302330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f07b5fbd744603515e82246a3f274224e08b90b7ee9634748465d7ea468714. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CZA163302339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c67ad68098377659f1c7a9ce708a327f7f2982c075d06c825f38989f70ed77a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CZA162402838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48347dca909bab5d2675fc856079144d7d173e5866e62d02917581d7d67d146. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CZA162402841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f2f59c0e38b11889eaa882fdd114cb17af0028c1570b0724e056c003cee499. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CZA162402842.