thumb|Mannequins in a clothing shop in Canada|250x250px A mannequin (sometimes spelled as manikin and also called a dummy, lay figure, or dress form) is a doll, often articulated, used by artists, tai
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 0x876ed3b526936b7f8798cff700953a57293f5924f877bf0f3e1fc2004c2be30d. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae59483b-c9b3-409f-9f65-56c88de324d1.json and https://artists.proofprofile.net/proofs/artist/ae59483b-c9b3-409f-9f65-56c88de324d1.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 0x7ee6f7bd511e5c9d0fbc26ebbc5d91166fda923f4ac62d8e9f467164c95ebaa6. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QZ4JJ1945923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb59786f9340714ed24a1395d75e95f5a6f20221aca8b4883ccd677b4609eadd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFYZ1954248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b00a6738fee96cfc8659aececad0b55d896d42b7048e882acfd7fe31959323. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFYZ1954249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f5f22e84df715727c072ff2857fdf06f4e4b6de171c8e65b3aaadb7ebcd188. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZFYW2031528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ed859bd40479c410dc762e61b274e4515ee6ede01e5638c90a78cb3b8e58d0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:30:17Z), 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/QZFYX2021074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc50beff18e24a488e236fd35503d9188a8c6e6b2fc4f3a53b76d44070a4ce8. Chain 2 (Bitcoin): anchored in block 957686 (2026-07-12T09:33:47Z), 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/QZFYX2021075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ec6bacc531dc604a2da4f65d451519fde93ded5b745d6c85a8c5a7c43dba39. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFYX2021077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a27fa4767daa8d26441b290ea62caedc22dd28c5741af7827ac713615ad926. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFYX2021080.