Bill Fox may refer to: Bill Fox (goldminer) (1827–1890), New Zealand gold prospector and miner Bill Fox (musician), American musician with The Mice Bill Fox (politician) (1899–1994), New Zealand L
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 0xd2851646e99f3375f541dece0cd180c8ff2177427890f63a485d0bd58baa6920. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05726a40-11a5-41b8-91e8-ee1d869c3a72.json and https://artists.proofprofile.net/proofs/artist/05726a40-11a5-41b8-91e8-ee1d869c3a72.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 0x7a2f9e21254df11150c1bfead10392c372aff68985a20a46d7340d44f27be6c5. 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/USA3M0910001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae01a134910458fbbb44d46da9bfd128123250ef1320933ed6afd9bd711adf5. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USA3M0910002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84110147e581982b7086daa7a4e262d5dbed4fd395af84f65215937e5547398. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USA3M0910004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd20089de7ae3f7be78bb88d8a775f3d3906b4ac0164c6683accd19d528e9c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA3M0910035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c23ff6890e1ce9a6de5871f71166d002a7f054b0d07402333e6e019804a450e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAJJ2503370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1a016b77b349b746025b3fc23fbbe50048bd321ed74d9bd9ba1a46ab52740d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAJK2523373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7a47d5ddc333025eecf7221b16fd3def1e58ab792d5004092830b3d7be0b44. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAJJ2504306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb83a3635accbe61758a9fb81c9fd1c4227a8054fc427845e2dfc21742c35ed. 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/TCAJJ2504326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b8697fd9d62844a9a43fc829d05e5ff54d6219f38b2f001f7ec9d88c11fc37. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCAJJ2504435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f1e3ec9908405f63aa8affa7149cb63edc6342d2422e68a10e299760adabf4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAJJ2504491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca0728ff6dd53a9aac6023c07be7bec1897f4f7dfba74718618f8fe0011829d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJJ2504513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42e74e2054049b9ebb3057df24e078ec2cb61665a2228e58a901efb79513860. 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/TCAJR2530800.