Draco is the Greco-Latin word for serpent, or dragon. Draco or Drako most often refers to: Draco (constellation), a constellation in the northern part of the sky Draco (lawgiver) (from Greek: Δράκ
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 0x7268aaf921f338e7a4e59d03e09444d45b49534aef4d2dc85cf1326202700e63. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bea810b8-a6ec-4570-8839-3787bec6e499.json and https://artists.proofprofile.net/proofs/artist/bea810b8-a6ec-4570-8839-3787bec6e499.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 0x6a32df0b924f58213a512d307d82a4eef66207aa6f2f9cea8a40002cea3afe55. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZS652324849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec85e146605bebe0136c1a37e12fe2fc9fcd5b7e5f04ba91440d9263f81114b. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/QZTBC2325803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2347df6822136902750ec60c1069d7efd899708fe017f99b36515f7efccc7a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZTB82482011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae48d12e8595ce76893d9fb901b40c0ee7128041ab6b6f73e6e0d7178f1ec5e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2559952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabf801dae25d903c4a5e2454a82fe9ce91ddcbd56bdc06f0b57bfa6bdde09f2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2559953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac70953ac183b34dae50423c44c501ae84879be12620d205a21f93cacbe9363. 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/QZTAS2559954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5170bb042190b9581d5c2532567028084f30bd61fbeb65cec83f0892ab86a75. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZTAS2559955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1188089115fbb57b8f8fe57ba9232fb47e006fb79a071d347dfde9dd219a98b7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2559956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ba30fc3347109eac2d0c3d55424071931db88d10066794a280b6bb982a4d8e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2559957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5c504ecbe8ac2e4be97b89ae1c1aca2d57690e80721ab4362c26fa7865ac79. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZTAS2559958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c26b2202b61e01cb2c30dc3e2838c91f54bab6019828e3a9b5b622758a424e0. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/QZTAS2559959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699beb14fc96bbfa8f4b8fb6bac668148ecd65e1a0e9f16bb4746aa2e6ef61c4. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZTAS2559962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27143f9b308009f17ffb09d27d0b9806f1138f007612e93d0534a318dae37f27. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2559963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c82f9e6fd8fd59ef1b92ed5ed9c28cdf974fcb0a1d992fd7e3c6cc5c3384781. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMHL2454910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42259934a930f4ec8d865cf6a147bd8106a0c77d866240b716a575778e1e1f2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZS632498510.