An artery ()ἀρτηρία, Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus is a blood vessel in humans and most other animals that takes oxygenated blood away from the heart in the s
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 0x5e8498008504e6d38c83d21c82773f54d533485a212abba7767743cfbcf3d6de. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30af22b5-16e3-4f9b-9b8b-3741924a7558.json and https://artists.proofprofile.net/proofs/artist/30af22b5-16e3-4f9b-9b8b-3741924a7558.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 0x13658fb4d4eb4871eeda1c4746c5ad47861da1f32201c45661c0ac0c590a698c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZDA72423874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9112219afe1ab8dc2fef37f32234b776475f57f9ee705d6717c6400c0340d479. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZTAS2498612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99cb7e8ee3ce0c26f75bc02cfc36326ba6f51dd678ef6dc72908870808ea66b. 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/QZTAS2498613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c5d243fa358e53cd56732b0171d60dd1bdb0cc1c825df8839a53531ae8aedc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZWFX2436151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f99b8dc24443ec26b0c4fdefb004c5b29b97c9410befd85749079d2bf75081. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:40Z), 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/QZDA42522463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e77e84ef70a19faa91bef96b2d677240162cdbc50d1db6450198b7a941b5f1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWR2502356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c86146bc20ec242760a73b3694f4e63ff1ffbef8edcacee5802e901f6ca6f4a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:54Z), 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/QZNWR2502357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02fbdc9b04ef4734acf1af13e284a55bf3738d278f00b00d1a5e5ec036a4ac8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:08:37Z), 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/QZNWR2502358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903d6b6bb6c7f5378ad528f0d5c1ec390adf4864834356c7314db91c7cc4f3fe. 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/QZNWR2502360.