thumb|225px|Threats can be subtle or overt. Actor Justus D. Barnes in The Great Train Robbery A threat is a communication of intent to inflict harm or loss on another person. Intimidation is a tactic
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 0xd9cdfaa68be367e8af13d73543235f1177c6fb39440821ec9badff5f4f17b08f. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a24950fc-e31a-4c7c-9639-cd46634dae59.json and https://artists.proofprofile.net/proofs/artist/a24950fc-e31a-4c7c-9639-cd46634dae59.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 0x2522e3fe58507cde1b6ad3c52e1709d88c7c22d74ae9af7a0708397eb38afb3e. 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/QZK6J2110605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cc1717af38bfbb30454be53f258735673755f2647f04685b8c1814764fd3b9. 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/QZK6J2110606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739937e973564f1934e76335d7bea21c1caf3fa013a21b2315cacb15483c06ec. 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/QZK6J2110607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9538e3f8478f87e5a43ddceda91c484bcff7417d8bf554abf30aca373abaa263. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6J2110608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5ea858531dadbca610949c4500d0d8cea82007e5efd3111bf5b0e308dd31e1. 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/QZK6J2110609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979cb160330dac9c0f5e7cf1792dc194bcda4095dc306af2fcf61b277d8d51f4. 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/QZK6J2110610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcbbb89720a1877ce3030f774d62f3345cab0a29e2fabc55b2c6585227ae311. 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/QZK6J2110611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81852869c43408ec8d59a27b438f74b7e6ff3461c6c5a714b8b6a478dc305fa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6J2110612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99221b6a381ec8b09c2d4ccbf80f10687fea2a2c4a6291a48b38a682e5a55c90. 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/QZK6J2110613.
Friday (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa83bc1dec710854e6c5e27b71b289fe311d95097427da2c1bac2d45f2c75bd6. 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/USPO19550001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8715317f0607076d3f2890e0cfb0a61d4adf13606f57927182246fadc6abb53. 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/USPO10000797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abf00c5993cd5709e47c573ed00e400c56ca858e5b31b626665354b06855f63. 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/USPO19550004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7537bdc3243557f1cee9e8b0baff0c1a13bcd036c349b5e706f80848cc5b9185. 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/USMC17605478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9892243745e08b5a7aeb5d7517b452ee431a1d7f5e36c70350a68e324a61e094. 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/FR8GV1832350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1ac34f8ff369272f288fb408ae7d1aa3ee2469b60139fb2e6f66e0c98061e8. 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/US4SC0500713.
I Heard It Through The Grapevine - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d28826744441e7cb6cfe9e9288a28636c725919c5043651c60aa83bcf219fb3. 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/USWB10938909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c2191d9efe06240b3a4b07770c248e3d1d6171e555f44d18efdfe0118ff64d. 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/TCAES2021520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8020d6433bf2fb28089b8c47532d170ef6875870e4a6e99f1bbb7e9ff9f437. 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/QZRP52149057.