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 0xb88f5d00693d098a57e5ebcda37ecd3f629e6571a9652a94c777116fe627c07a. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67c70130-3a79-4ee3-9178-7d1ab473c04a.json and https://artists.proofprofile.net/proofs/artist/67c70130-3a79-4ee3-9178-7d1ab473c04a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
East Coast Avengers present DC the MIDI Alien : Man Made Ways b/w The Right To Remain Violent
East Coast Avengers present DC the MIDI Alien : Avengers Airwaves
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 0x7a4cfef8c888adeaf0f83cacb1a4dfa0613e141f83201a292b25a49603fec13d. 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/US4UZ1110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b110bb35ca0eeb9428e24c22b728506d688b6c6cfb4f9e726eeb132e7ae6e5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4UZ1110005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f24b41f57e793222ddfa08612c4818f1e20e39f8f770fade4a595226c630ac. 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/US4UZ1110007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5202c79adde9a0a630cb9dbd738a3145703fe70598059d7fc57a195077e6ee03. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4UZ1110008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6efdf9b42e2e48a40819e615b460c1cb69ee2210e48e98adb07444efa5d9d7. 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/US4UZ1110013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd021e17161294deaf87ac548ab25e0a5c0d76637ef158a925b3687143c49b989. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US4UZ1110017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76f5af7d32976c6a52d807238fc6bc55b0a766fed009c500b78f5355a7cf99. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4UZ1110019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc641863e4b4a36a5bc19c7d692ec5ac19eb08f0ca6da2fa9d0c7f5d91686be57. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/US4UZ1110004.
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 0xa69f281d38786f32f2aa7ce7c74532a6ac878f3b48017abe6af63e9a188dfa28. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US4UZ1110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370dbf16cce445bd92c89bf1133a7d2aeec506022d98823711db19d7a7375eca. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/US4UZ1110002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1763f61671c3fc57d845a45871abb45588524ab2ce318a011f3ba27243eb908c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US4UZ1110006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b82e11614f4ce30a2520cbe2d76f40581d26dd6f0a17029ea1b033f1e3536ae. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/US4UZ1110010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52888b2f032b8813a4f4c27bbb5f580d4838442c4cc6be92c9e94adab24b6677. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US4UZ1110011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608211959f85868053d120dbb0f090265741613f4ef09f62e5511377b57af1cb. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/US4UZ1110012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbc4149e21a1a3351646def2d3927cb510e6b29a1010f3fd2e80a62d1067f6b. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/US4UZ1110015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb907147dfec8c2fbb854d72b613ae287259c77aec9ae0241fa10075eb1eab6b9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US4UZ1110016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7259c1eef556182a1da2ada914217a9addeade74a985f195ffcbed2b84288a7e. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/US4UZ1110018.