Keturah (, Qəṭūrā, possibly meaning "incense";Schloen, J. David. "Caravans, Kenites, and Casus Belli: Enmity and Alliance in the Song of Deborah." The Catholic Biblical Quarterly, vol. 55, no. 1, 1993
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 0xd47b802accebeffbeafe7c4ea685905e4a5b43b807dc174e49dd539323556433. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9549015-3b95-4e56-bc78-caeae7ab09bb.json and https://artists.proofprofile.net/proofs/artist/d9549015-3b95-4e56-bc78-caeae7ab09bb.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 0x44d4c4f89229e9d877ca4a0376aa18e8dcff23ee742f68bda36a68fdf48258e5. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:02:30Z), 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/QZNWW2179748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f27f9afe5c044cea09db6c77fe9fbcbf022e1c6724e29abf6114b7073ff76ef. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZNWZ2179821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdff3e867f80515d6f5915194e9736c43045d2c94f79350c1fb0ef58985ede9. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:39:34Z), 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/QZNWZ2179825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d8a94a285abcb3a5f3e7a3f983314c1af19ed2889923da0ae8b2cad3333679. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:31:37Z), 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/QZNWZ2179828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9468f5257bd2886b48ce2d1320ef3c17dcdb192e623a9aa905787d2429c1b1ac. 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/USCGJ2462230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a936261eac0478806484001dd87575d04823b6aa82a39849e2c54224ae056c4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLB932200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440521b548f82714caadc47a5355de8149e6c2b738110fb31ab9207c89e5085f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLB932200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a936261eac0478806484001dd87575d04823b6aa82a39849e2c54224ae056c4. 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/NLB932200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a936261eac0478806484001dd87575d04823b6aa82a39849e2c54224ae056c4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLB932200101.