MINUIT, now MINUIT2, is a numerical minimization software library developed at the European Organization for Nuclear Research (CERN). It provides several algorithms that search for parameter values th
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 0x369f89059ca753b0cb4d9b8e19a4e0c4c312d54ebe401175de60be7d3e883c91. 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/e9a28d46-2f6c-4267-822a-0f73a5867867.json and https://artists.proofprofile.net/proofs/artist/e9a28d46-2f6c-4267-822a-0f73a5867867.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 0xd814430a894648a0aa9421b8557f571025846be85e697cbe39362ea4dc2b8990. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6P11801080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1ab495aedd9ec04702fb6dbc9decce51c472f6160ed1dec30d19def9ccd161. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR6P11801100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8a4a685efa9d8059bfbf9e21d665efc7695f197e687f1b5218fe3d7dd0b973. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6P11801120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe1dd104f7d05ac1957a692f58b2785f5d514ed573b8d1f46ba9403a3a12bb6. 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/FR6P11801160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab44fdbca7ba56ef994258ce5af78fe172b1743ae4ef0e4d874dbe975431cc2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR6P11801200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5bbe2fd93d932eab04d89b30987acbcdbe26e6056d9e2eb0b72dc2b1a0fd92. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR6P11801280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5f574d0c4ebc1e430fa2e0452c975e6e742d4b98cd75261fa2e193a116f9d0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6P11803530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8a4a685efa9d8059bfbf9e21d665efc7695f197e687f1b5218fe3d7dd0b973. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR6P11801120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0d9ad3d63fadd7aa2913c4d50fd9a1cca4c1aa77a28ff5682d55f71bb5a538. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6P11802550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0698073d16efff47be086a781b2cd2e2468f6b1f12221a82afaddee369ec08. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6P11802520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408347ae9f705882476ff5ccb329b410af496beb4bf5bf08134979dac768732e. 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/FR6P11500470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8a3ca6b49a9148a7a9c7a41b57650b27a60af505f7c43e43535edba1c417d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6P11500490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2753eeedc2a7e09e547314a42d4ef5934d57bcadc31e5d36d8e32b9eb9409c0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR6P11500500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959dea5dff34a3dfdbba39f178a95b0374e3da6ec3101f6101df9debcb62e157. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR6P11500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408347ae9f705882476ff5ccb329b410af496beb4bf5bf08134979dac768732e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR6P11500470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf7f1f1c515b6e0a8e617b37377b015b5adf3804661104a0f187197095defef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR26V1415572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c442f85a8c194bab632b3bbd01c9b8a233898c1bb8be23386bbfb8bdaa5a292. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR26V1415578.