Blackmail is a criminal act of coercion using a threat. As a criminal offense, blackmail is defined in various ways in common law jurisdictions. In the United States, blackmail is generally defined a
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 0xe18937c5c2a61aae66cb6290dfe148522f538d6c3f73c17aaac6ff940b13978c. 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/e7beb866-2e96-4347-b14a-113168796d2a.json and https://artists.proofprofile.net/proofs/artist/e7beb866-2e96-4347-b14a-113168796d2a.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 0xb8ed373aa307390c2475d39ea2636315d289bafbf77f55576267418a1b4eb5a9. 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/DEW271330083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0808af43f55e7111040542409cab8302433d0c86595b062f90a145ddfb3b9b5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEW271330062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0cdc03c49415eb2b8b8beea4ef3ecd54272226553997d4f97823e375388fff. 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/DEW271330063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a284c0d86eda89de9a4f5dde5203e5766507cd43b9681e2f7e42291a0227d25. 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/DEW271330064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91427d7c08a9762f29a8d632b1c8173126531a5452ba952bbaef331226a64e99. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEW271330067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f57a2a3991486158c9c51b99626d7221877e1c155e3b928b43c5108a8bf52db. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/DED620663802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c22e6dbb41ceb7920c2907155fd129758fd7a937b44a93b1f05c861ba52139. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEW271330102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8357c7ea25ca10ea627103cfaf1d1bf745f1f20090555edd07e591cdf01b12. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DED620663807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe228cb078695ac41a2593e390056927a326a5a1ab4d3318ae1b3a3cdebdd371b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DED620663808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff1f24cc8bd80dba0240c1685680cc6b860a2e33bebb0b74fc5711891518a8e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DED620663809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3e7fb110391408d59f5af56350aa3a1c125094faa0c10e2800372dd7e80831. 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/DED620800244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a049ed994384b6d059ac7f691d29edd3fc1f743bef25f433ac325d68b2e387. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DED620800247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77bc9663a2a71246f8b3202ac17e20b9caeb517072b02725eef2328555142ad. 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/DEW271200885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0528c4912ed6010e3579526b777c08be202ed5419684e7ffd785b9d15e1b45ae. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEW271330106.