Chak or CHAK may refer to: Synonym Chak (village), synonym for canal Irrigated villages in India and Pakistan that were built during the British Raj Places in India Chak Bahmanian, a village in In
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 0x84f01e1e32fe3205f7e8db77a42076ce1d5ddfb9134bdb5d1978978aa289dda2. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2c70845-ac66-4039-8c71-3dac64d3b907.json and https://artists.proofprofile.net/proofs/artist/e2c70845-ac66-4039-8c71-3dac64d3b907.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 0x32d8e7b389c8f066d01fb2a6b469b6bd456fbc1bbb973e11995e4c7d50840613. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:54Z), 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/MXF620600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e46d99eb65aa29a2234bbab21c87b57ecfb8925002c985cc309cd6a3b898303. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:45Z), 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/MXF620600006.
Conjuro para despertar a las piedras (Arrullas y Encantamientos, Vol. 1)