A harbinger is a forerunner or forewarning, but may also refer to: Companies Harbinger (company), an American automotive manufacturing company Harbinger Corp., an Internet-oriented business Harb
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 0x226516146a41c038aa4885af757a484e83d0a5b73f9e72af80aa1a4d51aea129. 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/5989e526-2cac-4129-9d16-56c526cb5e7e.json and https://artists.proofprofile.net/proofs/artist/5989e526-2cac-4129-9d16-56c526cb5e7e.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 0x33852c18a79587b5fb6fbee751540612d460887d56180718f37fedc52c088bf3. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBMJG2110035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e055592b149341855ad51e4e0328e2f5f519319c25872c90d3f24b0cc7e666. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:29:59Z), 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/GBMJG2124630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1518d3a78c4c25f32fde600223fb66734dce2a569e3e0d8fe2c161a3d316d5c9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBMJG2124629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7473348fa03f6a2e90dda0ee6826e9172956a87e419af1a1db75eebe09f85887. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBMJG2123017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2efd76a75e6f4477f0f9ead2c483e31eca5272929d151cc8de8cf5de16ef785. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:42:27Z), 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/GBMJG2124632.