John Paul Lawler (born 4 March 1979), known professionally as Jon Fratelli, is a Scottish musician and singer-songwriter, who is the lead singer of the band The Fratellis. Their debut album, Costello
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 0xd8b5bea7456e17d70157866a82e13a0bb7af1ecc9b676fdbb76776f53a3a08ed. 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/ea105c20-936c-4ce7-8b92-059c43355765.json and https://artists.proofprofile.net/proofs/artist/ea105c20-936c-4ce7-8b92-059c43355765.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 0xb63ba5fde0998e8f76e5482fcef00caaf756ed0988be970def732af27a5b4a21. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBUM71100756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf217d70fdc6ce89eef6c77718f065e074bfb5dda8a720080a103361371cba5ba. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBUM71101431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b2b6865ce6237c09470b742d9942147000d8d9b465649eb208d1d4fac5708d. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBUM71102443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d1439d1aa3b74eaa48fe4fdb1bb68e5c83d8f90e717aeca8761e2caee471a5. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/GBUM71101179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb78f207745dc04ce15ae39b62e159ca89f0c78395cd41fd5babf11446f69211. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBUM71101420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2874ee60757dac9c1905ad8139624bdae10c44143826b2f0e321b59b614fbdfc. 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/GBUM71101430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf217d70fdc6ce89eef6c77718f065e074bfb5dda8a720080a103361371cba5ba. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBUM71101431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcf0df733bb8c69136327b3b60a74383fbf027d48c6157b9081fdc108af14d2. 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/GBUM71101432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88a5177615a1708bbb94a7b8c40c2988ded54f31463fae25be0bc0e71930459. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBUM71101434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7029f7233528535a9b05ad3037b6533b9536815dd7afd11509cae48c374ea47a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GBCEJ1800193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812987d872fdabdb77c8d22644988c1de73fd783afb99549b7154035f3f03476. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBCEJ1800195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac688ed5b35123bf89ada02588f8d754a605b57434e73e11483652dadf299af. 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/GBCEJ1800197.