Timothy Kenneth Rogers (born 6 April 1983), known by his stage name Jack Ladder, is an Australian rock music singer-songwriter, guitarist and composer. His music is characterised by his baritone voice
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 0xfcb0b11f8e251ceb8508cac0629adb29a0225fac1f4d4050b5da457258d2c058. 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/8b2ee2ef-a180-4a37-9a7a-82add820e5df.json and https://artists.proofprofile.net/proofs/artist/8b2ee2ef-a180-4a37-9a7a-82add820e5df.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 0x9827b79ec6dfb03864f9d3ff016df99750ff8c34284d3f50bd2c7cddecb08e5e. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/AUQE00701336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606038fd5d8d462924eb3be6305b49f2b6c552dc536347c6562f548a4479100b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUQE01001650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c5d62ea0556e8b4af11eadd12ac6aed28fdf6ad602cf8b2ded7dff4e0f9caa. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/AUQE01001644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098157616822cc61b3256695d32f1375869af6b7c420706ad818731eac5ebdef. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/AUQE01001648.
Come on Back This Way (feat. Sharon Van Etten)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d53214594c2db86c533418e67eddfc192043dc551f152f828ecf693dc239a3a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/AUUED1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78105ea94ba5aab9e5410c25f42351e2566e3b39c5105966b3f4810c26609982. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/AUUED1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d53214594c2db86c533418e67eddfc192043dc551f152f828ecf693dc239a3a. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/AUUED1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78105ea94ba5aab9e5410c25f42351e2566e3b39c5105966b3f4810c26609982. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/AUUED1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d53214594c2db86c533418e67eddfc192043dc551f152f828ecf693dc239a3a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/AUUED1400001.
To Keep & To Be Kept (Radio Edit) [feat. Sharon Van Etten]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe852104bd8da0ea955db87d5d8ce23081f436f5fa1c4bd88e3ebeeff06db075d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUUED1400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c804b09926c7c125e330522a9bf5cdefc41270fa816624d564a9c7238f164a1. 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/FRX762356743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d4aff42aefaa541c507ffe9a4b3722113b59f7d754005a86bf406a696579a6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX762356745.
Stumblin’ in (feat. Loene Carmen & Jack Ladder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1d51f3f349fec1611b3e547f2e6a125103488183758db1b0a52de187a34aa0. 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/AUKQA1200016.