Corbeau may refer to: Le Corbeau - (French for: The Raven), a 1943 French language film Corbeau (grape), another name for the French wine grape Douce noir American black vulture - or black vulture
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 0x30aaa39cf2ca4bd0697e4c6d0e5c9249a34d012258c444eb7f52f0206ae25008. 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/4858300b-bcb3-4355-a350-c8366a72bc81.json and https://artists.proofprofile.net/proofs/artist/4858300b-bcb3-4355-a350-c8366a72bc81.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 0xd550b6b160069d0569bcede43fd3736243da7ec3f184b9b4683350b768cb7c95. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CA1FY1500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03e1ae5e6a836eaa15f37d477b0b728febf29f3ba6833b41b265799b772e582. 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/CA1FY1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c3c43edc6875960e60156992948b443d46baa5fd8a9b48d64ce1e5f3aa83cd. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/CA1FY1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cee6d2a43101fc2cb995cc55186d0ac6ab96cc9cc2c6475ea7b3d1ddfe4bc36. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/CA1FY1500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa039908a6c46dcac159e46ee805c9e235730d03d428d8659180339e65a75337b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/CA1FY1500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e2c3d3f19440d7368b2167dc2629443f9fc15cce1e69865dd22ecd831cb629. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CA1FY1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a225378eefeae775f046532927ebde21bdc33af74e211d0447f139f1aed564. 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/CA1FY1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962418f2461e1ffb02746cec50fb00af055bdd189543d2715086de8f2387a127. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/CA1FY1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166a53b0d768f46d3076278476ba8b5b427a6ce7d34b162f2f354834f368b71c. 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/CA1FY1500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6f155ae03dcfca345c0b96982747b836d2265720dd4555ae467cc8581ba1c9. 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/CA1FY1500030.