thumb|right|300px|Delilah ( 1896) by Gustave Moreau Delilah ( ; ;Gesenius's Hebrew-Chaldee Lexicon ; ) is a woman mentioned in the sixteenth chapter of the Book of Judges in the Hebrew Bible. She is
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 0x2787f6e534f3f701e79f498c6d843fb84f75a5843f55828dbad29eb27578e834. 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/ad8bccde-e513-4d30-806a-c95ebc866be8.json and https://artists.proofprofile.net/proofs/artist/ad8bccde-e513-4d30-806a-c95ebc866be8.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 0x5fce6a672f5291d4a30f8e699a0375064a178db4b0210b27e704b7df992e8520. 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/GBAHS1100223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf18e73d9ce6cd83b4387801442e7e6be66710fc3c9735d88d9b25bc73ba7763. 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/GBAHS1100395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a651d594e52a0bc1a21ae9c6aa830da306aecaaba307c048d2a4c989cf82495. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GBAHS1100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bd0bfffba8a50ea604b9e621f2e150fc537401bd6011f2404de1a1be5316a1. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/GBAHS1100399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39aa72c90ddddb1bc5af705d894092f23d755908e96e74e547c85182a23e7d6. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/GBAHS1200179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b00e5189f2bb78449b27149ba415acc5e78de869c0a1548d6dda1dbe8daf17. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBAHS1200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf8711fe42837910fd87cc035d891c68b2d8d90511dcc6091813ee03fb20f4a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBAHS1200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232326169846dc49be5f2c3310269526a52faef9402d36557bd74858a70ba759. 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/GBAHS1200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99d34ace59586d7e1a8fa57fadc2ddd68fae65de1f21441facce3d039ca5f29. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBAHS1200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebeb3b08e83f0b1ea67beea4523fd8a939c16295589a0da0a0889b14685999e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBAHS1200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1aa9bef87a7562c715c615a5bbbbe740717def835d763e5bc98d4b2ae8b86db. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GBAHS1200188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a1e89d1fe009167a020a1d7635d111ea98965d81adb56c4f337581d7764fa1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBAHS1200189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb91c921f081681ceb259f4b56dfe993d9e95cf664f402f2c7228abd8ea0f753. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/GBAHS1200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb0fce781469b597477bbb2e7aae1a3b42e0abbae0aaabffbb20dbff6c050ed. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBAHS1200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c8ae13ed4955226f0fa16277527399a8da807bd60ea82c095edf60f6166ea8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBAHS1200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdca34ec5397d6c5132fcf3c143c24b096c55f8a401d9b37b778affa450901c5. 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/GBAHS1200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb0fce781469b597477bbb2e7aae1a3b42e0abbae0aaabffbb20dbff6c050ed. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBAHS1200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d13358e14b45173b59895812177a52ba3422d0b0530c4c220ec6dcba5d9375. 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/GBAHS1200191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15a43ba40182731f3b437ccea998757805148f792973cd9e614967da82a3e6d. 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/GBAHS1200400.