MOF may refer to: Science and technology Metal–organic framework, a chemical compound formed of metal ions and organic chemical components Multiple organ failure or multiple organ dysfunction syndr
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b90f313554df79b79baf5286261691ac839ae46ce1dd6a50a2febd8d356ac08. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff91a845-e26a-4741-a1f0-811c86b9cf35.json and https://artists.proofprofile.net/proofs/artist/ff91a845-e26a-4741-a1f0-811c86b9cf35.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0ad81f168cb2949075461e282ffd3eb4f20aabc01d44749afe0fa83140f19e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZ5AB1875811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d028d1fcb9b6a49a92a4b5cc538ed501c55b19332a3a81943bee3225b00feca. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZ5AB1875813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf6db501f16b84bdbcf3aa525c935177ab7971fa49c97032039be32b91a99f4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZ5AB1875815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7e282323a8fad55e5887886f16e22f1f297027f9e4545f6a368da7bd5eb6c1. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZ5AB1875817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a0022f7dafe6b12a066638c25e1430912dbaf61373590b2e29666488335045. 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/QZ5AB1875819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5745b6fa05f074055b95467b33c4b1b3f806a025690fa6c09cf26bd30e96d4e0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ5AB2056803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c8a3cb9382aac42f9c2d0fee00d328782bb810c404e585a79c6a5cc3dca2c6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ5AB2190010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab8346c52ce8167a9545c9f854e19d45a7218a2f2ab1a1d4a0129af73321c39. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAHU2401703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7c4669c2aafdc507837689ce9972b3f8c71889f08212eeaff68d330cc25d74. 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/QZ5AB1634508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbf5cfc9bb39e4b8661aba2fed1750c5edce220c7009904dcaf439faa3f8fd4. 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/QZ5AB1756468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4065c6fc61ac9c0b4eea7b69ee7d6fa2377c619ffc2234f22956c7fa7bed58e4. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/MXUM72300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c9a17530487f1d1962d2223525bba04860b4641aaf5346b62ed1dbbc4945ed. 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/GBWUL2229434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c76732fef1084dd85c6ca356f1812f7102af0dbf081004a7fe040f3d801bece. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZW9M2411469.