This Winter Machine are an English progressive rock band from West Yorkshire, England, formed and named by vocalist, musician and songwriter Al Winter in 2016. To date, the band has released four albu
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 0x8e6498ef7f0218425c37577a132247297a89b9e35d552e9b838e4bca57229f19. 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/fc469cac-da08-48a4-b1cb-580d33d8cfd9.json and https://artists.proofprofile.net/proofs/artist/fc469cac-da08-48a4-b1cb-580d33d8cfd9.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 0x8c48af2bce130ee4e47fa00d9e6cfedfb5d1104fb5d8fa9706d953a65c4e98ba. 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/USHM21992654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb5c101835bbaaf88174966f80314575f07a42a8113e31e5ecc8d9706273339. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USHM21992656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031729701e2c355dd64de612fed5e3033e586e3a7e2dfa48843cf198c420a54e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GB23Y2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ded63055dfec79ea1ef3a07ffdb6b6c765351f9a4abc849268545753b81499. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GB23Y2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9519c1667102d7ca857276f9a41d5a0eba97f665b44cdffbb1884dc81f0e693. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAHO2375412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ab87d484472b9ae1d7058c64f36b4ad5490ca5d8dc4d443ac00f7be2ddcaa7. 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/TCAHO2375433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8572945e9c202adf616ac9d805ea9fd38047e4700a64c1f41c49a55eec717ccf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAHO2375450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa1deb862073b8dc76f732d4b9dc52da2a690d144608cbb04ff6d11c252c6f5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAHO2375498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7390c43c60cde387f9b1940913f500d2e07e11803fe243997bc4ac64d6e3cb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCAHO2375510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e28889cb8dfb91ef29f8a340e715aa6709d7dbdbbe7f0b3ae66101bff4b99c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAHP2375219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e7fee67a1518e01f895e42242127abd1b1ff2107be8e1b89ef40552d066692. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCAHP2375231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877cb43f35a7a74fe506a2ec283a9d3d8fc92d65eb96eeeb2c8b595a2a80c6a0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAHP2375242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d823c9b31306abaa4b85898ca6d9611c2b1f35ed0744ef9c61a5f73a0bc85a3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAJK2568053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33edd2deab7f843e9257335cdcc806616ac6062f8a271a8bf211f8173bef7d23. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCAJK2573223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5c19317e3fe6cd725047847b13d56d958f7fa19016fdc00f27b45d015666a1. 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/TCAJQ2525867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abe6ec439ba7ca943e8c7ee5ba917fea2abf6660e013163251a7cfa07eff615. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/TCAJQ2525887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8b3d125d831bbb9495dcb5f54ecd8238f830288c35b253bd880bf16e43b5ce. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/TCAJQ2525894.