thumb|Common military rifles from the mid-to-late 20th century of various types and configurations, displayed at the National Firearms Museum in Virginia, United States. Top to bottom: FAMAS, vz. 5
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 0x0aa84f99492215f06bee3b0cad7360bb62e64b745a3d5471b078b997d9513a3f. 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/c293d5a7-1a19-48b7-8a6a-9230c3398a6c.json and https://artists.proofprofile.net/proofs/artist/c293d5a7-1a19-48b7-8a6a-9230c3398a6c.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 0x4b95cd1766275e3db297d3f6525ab3f9c56ac64eb0a788fad5931253e0b6f2bb. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAFK2106050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d567c0f08de260a78b529d4c87590cda077f081eb9c9992e9b017c9ff3f45ff. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAFK2106066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da5431a1aa957055f11589e0331afc2703399e06795764028e78646ce44ed7b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCAFK2106071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda017101b1ba569ba5b2d3841f684e562ba4a640de91eaae0bd2dc62d967013. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFK2106078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e61addb6caed9c7fb151d58918958c8347ef081ebeb97f8306d6ac564fa6fd1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAFK2106086.
แค่นี้มันไม่ตาย
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ea07a1a4ba405532c2d70cfe4cbac250a052ee5e236b717963b685d579a4ef. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAFK2106087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9ee80399bb4e9e1d64ece551f39b8844cc446a31bcac659b129bf614ab7890. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR10S2394037.
จะรีบไปไหนทำไมไม่นอนนี่