Maru may refer to: People Maru (given name), a Spanish given name, a shortened form of Maria Eugenia Maru (surname), a surname of Indic origin Maru (mythology), a Māori war god Ngāti Maru (disamb
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 0xd3170f3d1108144a89963c0e9c2495aed03d7ca4483b22eaa1841b9c5d8ef2ba. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb9fe661-f582-4c46-b8b4-6471ccc4d1ae.json and https://artists.proofprofile.net/proofs/artist/bb9fe661-f582-4c46-b8b4-6471ccc4d1ae.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 0xb326cbccd2d28dc8189488d2fba8477d42c47ac8032a73e82bc0368e23b9f60f. 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/TCJPD2543378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914bf0f14e6e8bde7b9163a0f62c1b0147d9ad5296d9caa512fffc2bcb59bc01. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPD2565311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa3ed61c6563fe1761505097e1bec8f56d8d0a52598139dec90d4287b94726d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:18:04Z), 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/TCJPE2504363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7727543d60a3db418727f9825d8a627f700d68ed2f7b610e985760bdaf0fc1b6. 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/TCJPG2502860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b74861687652c49cc1444a694da473947610a9acccd29e751b2642b6b5d407. 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/TCJPG2502870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27975cc96b3b8ef603b1a6d571bce73648eb5a03a0f841e2dba6002a7e95395. 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/TCJPG2589876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af3484b7e7607a7bbe19a9880a235cbcfa5121d43105d74a7991bc19ff0b65f. 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/TCJPJ2501587.