thumb|Pat Todd & the Rankoutsiders logo thumb|Slim's Last Chance, Seattle 2019 by Mari Tamura Pat Todd & the Rankoutsiders are a Los Angeles, California-based punk rock band. The group was founded by
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 0xa1519387f1c88b82d3a5d2a0727efc58370e6c29f6861146f4529cf7bf267699. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3e9ba8d-e89c-427b-a850-38d09a5bd31f.json and https://artists.proofprofile.net/proofs/artist/c3e9ba8d-e89c-427b-a850-38d09a5bd31f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
There's Pretty Things' in Palookaville...
You Might Be Through With the Past, But the Past Ain't Through With You
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 0x854456416ce3c6334030bb93287192bf39816163310de8e0b0ba14cb5894f356. 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/DERD52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9698b1206ea27662a2d60f67f42ca83b9e6b35047618d356467467c20119be40. 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/DERD52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02210d415b8f4f19eb9319956f261897ec3c097b84448e728cb120facccfe977. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DERD52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f53d7f3172f8d77ee49e5dd0b0c337d8fda8cbdaea90c47ea2722153dd63fb. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DERD52400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df21e607d85fb65c42830c7281338e68cc7a407809b5708a39b5c275d31aa95. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DERD52400013.
Down At The End Of Your Rope/ Little Miss Heartbreak