Miffy (, pronounced ) is a fictional rabbit appearing in a series of picture books drawn and written by Dutch artist Dick Bruna. The original Dutch name, nijntje, is a shortening of the diminutive ko
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 0xdaba2aaead69cf24fcebafae375dfa861e12d333447ae2a5b91535f82cd349af. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f2ee949-280b-4268-9e0b-7a3d884ad16b.json and https://artists.proofprofile.net/proofs/artist/7f2ee949-280b-4268-9e0b-7a3d884ad16b.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 0xa7b3879a390986785399b79b5e6b324d94d64a70c577e30eaf3f9f438a26efc7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USL4Q1961826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370e0e07a1f2977175f0a713751548fa5fef1009bd68f4cfb81925eb60031619. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:45Z), 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/USL4Q1961827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47be0d00ed1c707a5df9b222a5a4487be6db7b3ae2822ebbecdae0bf7c913da. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:15Z), 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/USL4Q1961831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3573c9ec8da8fd9d9ee576ed4ce395a08186ec735441f0b85f7e329a4eb02351. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q1961832.
7 histoires de Miffy : mer, neige, grand-père et grand-mère, maison, parc, anniversaire, triste
6 histoires de Miffy : école, amie Mélanie, Miffy, vélo, jardin, bébé
Le jardin de Miffy, suivi du Nouveau bébé - 6 histoires de Miffy : école, amie Mélanie, Miffy, vélo, jardin, bébé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fb99187d42cc7de9b178e4ed00ead36f0492fc7611e8aa819ca40b6b9c2294. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEWM40475873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1fc4518a79ce0d56d3414ba64ec14d7919aca534266b78e950d11f411fac93. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM92295793.