"McCafferty" (Roud 1148, also known as "McCaffery" or "McKaffery") is an Irish folk ballad about British Army Private Patrick McCaffrey, executed in 1862 for the "fragging" of two officers.Preston Mer
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 0x7f54c5f2bb9ae725bda823cd327435d33d1b6738ac85e1506e584e3eb3f2f8be. 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/71ef9b41-0608-4266-a88c-2134362c0577.json and https://artists.proofprofile.net/proofs/artist/71ef9b41-0608-4266-a88c-2134362c0577.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 0x91e208b4d16b74ee0e9a46c6e96f437a08193049034e323e7bdfcc8101d4634a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USF289801645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2fa8dbedc665734acabfe0db1c44d774a25a8723a21c5a552c43aa7dca5aa2. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USF289801707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2fa8dbedc665734acabfe0db1c44d774a25a8723a21c5a552c43aa7dca5aa2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USF289801707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c5cb624c80a2bc1cc0d88c66bfe4e3c3ac739eb3e1cd2bad3deee4343642ee. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US72W1821204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3e277b647769dc2cfad54596c8b813b92e17af60db07827e1b43fe8f86624e. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAEL1917099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c884b83f681ae4434682721ef1d8c0199cb9eb95b04ec3326a2d18aa9195ac6. 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/TCAFF2039463.
Two Demos Never Released from 2017 so Please Don’t Think I’m Coming Back, I Promise You I Won’t.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734bc81455e4c3b35ead75fc96b6f72cf056a527ec888651d11321cadd33b832. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCAFF2067708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b6114c8609f9a268449c37977c42608374862ca429a85f93e4b73c15919dae. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAGF2298072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65809653bcbd94b6969f7b0b7a539a4eeac6a29916b1244f54f5dbbd0f4f498b. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCAGN2272385.
I've Been Thinking About Giving up Lately