thumb|upright=1.3|The practicality of green-screen compositing is demonstrated by actor Iman Crosson in a self-produced video.Top panel: A frame in a full-motion video shot in the actor's living room.
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 0x61748d4613168b358471f223e257caa1dfc55b76fdc639cfea1fe5066009aeae. 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/029493e2-9dfc-47af-b6a8-7066d736ec7a.json and https://artists.proofprofile.net/proofs/artist/029493e2-9dfc-47af-b6a8-7066d736ec7a.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 0xb0bbec403151fc3f7964e87b2ca4e445227a87e279895a59289d1849db767f7d. 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/USHM90459682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a596d3ce58b10a18bf97f1e1d508d44d24e106cd80168bf82a74d202f01729. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USHM90459683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d75eb461013c03af6246c0c13bfc8b77f403511295250daafde5a1e1427ae1c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM90459685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a04c2c6c5584c86f0e6cccaa72a66a24900a9046d3dfa077561ac6eedea8ff2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM90459672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec9c63e9469d8d649cfc8e6a6e1d69db6b58a41dfc29c416946dca179b5490d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM90459673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c37bd01c7a93b5c7f539cf316bc8ee40c54ebe288ee2500e481550d5160d94. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM90459674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c0e216c5a617fccb9e3f3b4c714236e6c0af62367dada07f8a1fe0ee64a437. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM90459677.
Graveyard Mountain Home (Standard Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bd4dc5798808e7ccffa8095307dc589f10f55835b182563e57bf522b8242dc. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USHM21273377.