Mucha (; ; Czech and Slovak feminine: Muchová) is a Slavic surname, derived from mucha, meaning "fly".Dictionary of American Family Names. "Mucha Family History", Oxford University Press, 2013. Retrie
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 0x58007fdb514ec02baefe3d26df4ffe2f951bd7627ef95ebb6f15c16b888717c6. 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/271f0929-b966-4aa2-9dd7-769f6b7d9990.json and https://artists.proofprofile.net/proofs/artist/271f0929-b966-4aa2-9dd7-769f6b7d9990.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 0x6c392dab4cd2666f44e2f981a64a109a0838f2401eb98b0ba196fb2a78ac8749. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CZJ681300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fa577f729cdc73c1e9ff80f8d466122aacd0697984e91b60d9c39cb9bc40f7. 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/CZJ681300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f0be323abe48d2b335a8d9a65111dc564c572bc4afeaf45c5d79ccb031a729. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CZJ681300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149d947a3e78febc82c8691fb8a82274de89ae12c344a604da47524d7bb49396. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:28:31Z), 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/CZJ681300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661c714fafb5d93c8c4b178d2797fd08a0c078fa4b9b8d801c10906daa787668. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CZJ681300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d88427b105491bddec2f1133eefdd45d001aa9fab689e6881f7a5505196225. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CZJ681400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07f902ed0d406db88db53f6a3cd934c8cef9f0f6833f9b62473c7e1faa60dd2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CZJ681400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3193e38ac44103ebaf0cc2e424e9aeca59af40086a51df2e42b7b53a6b78d11e. 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/CZJ681400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1876c8e774a43d16e66c2dbcf79f4a47f93227b13f66a3262b758d8a4166ad90. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CZD701672703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9bc138cd80530fd69d744726020878b8debb406e20a152ca57f91aa84fd543. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CZD701672707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10980325ab3e7e5e2f88e42cda9945dc662875afa22056dcefbbf578721bc64b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CZD701672708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2614900c6e540b12132475a27e24dcac8b1cbb9099d5f1c7c5c3eadbe1c62138. 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/CZD701672709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47962c2bdd1b6f4ce592b3deb76258477dd982076700dad5ccadad2713fd590. 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/CZJ681900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9dafa8a78e92aefa12350780ab89dd34e5ccbf24e8cd7925fea353712db4e0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:03Z), 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/CZJ681900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7981d8134a8d9eed274e76755d51a81f113e9092cd36a15924a7e01e17d6b760. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CZJ681900304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7eff5ad61adfa605f725f996f9a5786f181465c2f4f25ea841367720cdbe133. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CZJ681900306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb2bb6fd27c7f8707a7e00de077447e9327e357abf216c516734b5884feb92e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CZJ681900308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45fe12c73b3fe7cb8b0540e4fb278ed96ad2ae96dff31f6e2f1b476e5714c6a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CZJ682400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2208bc6e83205843d1a2aab8382a1fca32acf1acbce03084b6090f79baabaa82. 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/CZJ682500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfc4ef65a45cb222cceb148801d4405611fc9e5955cabb9a46e60bb5b55febc. 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/CZF011600005.