MBM may refer to: Businesses and organisations MBM (architecture firm), a Spanish company Meadowbrook Meat Company, a subsidiary of McLane Company McKee-Berger-Mansueto, an American construction c
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 0x40bef66e89773c79cd5646693a4bb953508098a5ef8328b9c6a9655139f43a51. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea13a60e-3b40-4140-9def-291a94d1d0cd.json and https://artists.proofprofile.net/proofs/artist/ea13a60e-3b40-4140-9def-291a94d1d0cd.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 0x49e09d30edd09664027ca6911f38833be662a1b80b4a9997494e0915a535c335. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCAJJ2574086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef6c463b83ed216b393de6a35616ac280cdf88b78a273650b8ffabb2088e881. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWT2545470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506c8a25db1426982d87359008c9de9dcaae333bc49f24d3dd8599eb2a71cfd8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNWT2528053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c707e984e9649cdddbf4100deab811b5fe8492eb790fb4198e50e31c74ec49. 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/QZTAY2547692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f7796764fc527eb5046d3713fc09b30fafa015a4f468ff6b13d0666bd73278. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7P2501298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ff178405b671ffecaffd9589258740acaab28244084775de1fe3cf851b5a0f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7P2501299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd498e3a2dcf56d826038ac33547eed2b0654c7d163e3ba7c6cc3b11209ff0ce7. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZZ7P2501300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae9553703e69ad7c4762f2f6ef59feaee735337897bfc4d3982d9d9564f2719. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZZ7P2501301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd14b1feda3246550420e7d9e54e5533dfcb742147053154fa9670dd34fe01cc. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZZ7P2501302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55927843763063840b3989048a57796553bbd2550978c79e5d86f31ff5f71f7d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7P2501303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39696df420d0dee3c8d13345bc7a13c33b21e11a1ef2cc1a9121adbd487fe6c7. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZZ7P2501304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef6c463b83ed216b393de6a35616ac280cdf88b78a273650b8ffabb2088e881. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZNWT2545470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d08d29a2014ea029b129bd0cf0b28c9f2b0e5504aeb1bbe8807c341edef9497. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7P2501305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635cc8072b5b415770bcdfcc564b07c187591bb832253146691b9576c99a00b0. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZZ7P2501306.