Daaku is a 2006 Canadian crime fiction novel by Ranj Dhaliwal. Synopsis In the violent and ruthless world of Indo–Canadian gangs, Ruby Pandher is on his way up. A self–described daaku (Punjabi for ou
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 0x4b84b6f9f58a61924b84b3f4a1b905d86a855bb5098b881802fe41d7318604eb. 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/6142bf2a-cc6b-4736-98c0-107f5869d067.json and https://artists.proofprofile.net/proofs/artist/6142bf2a-cc6b-4736-98c0-107f5869d067.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 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 0x7dec2fb17dddb502eaa19bb62ff849c980a04d7ef0efc836c46bf1a784a50fec. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2361569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a361a237ecef8eff2ddea189a812203637cc6893b6f7db350fde0c974ad0d6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AUBEC2305656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f2b3774056923cc443ae04515356bb1028498383019fa44a259d2594179424. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC2234836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdce749ea2cd1aff6c5615726dcea8bf9ea5ca28f1fda1df9e0b090aed82021. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC2467682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dfe1dec0c67601e2c74ee712d5083ac545b51ecc7d43dc62524fc67f8d6c7a. 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/AUBEC2467683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474b532d332ae35773195b86835e628295aa37fdd913c677bf970035a2660f9f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/AUBEC2467685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6bf631a4d190f81080fd65d296eadcfdec317c2f08361e858ba1f32d57a486. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/AUBEC2467684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7182d2748d39bc3d1261b59ffd24c5db81fe53be9fd3ed3247f47d6f7417275. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/AUBEC2454934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516e16f4abc80b7a08bdac3e68ecf1759e0c22647750d889a334b0fec83fc404. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/AUBEC2449584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07c1d785619d0532da958b1ddf11bb83cc3af86c49d21e0ebc87174cc81dcbd. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/AUBEC2424638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cacfcd2a2ad483bb5da5a367b30150856871dafafe75f94880e4af95729754d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/AUBEC2405148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc10a91ca194b2dfe0b23258c02d9fd3f177257daa89a6a9bd9323e3bc2362a. 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/QZK6P2379030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b50cffcc80ff80a4dbe7992614cfdb2da3565f09a6fed53c385a9f17b203cb. 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/AUBEC2314067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfe58f500875cc65d92d08792accadf3ec8081ea6d11a72131b690524cce3ee. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUBEC2227855.