Timothy or Tim Walker may refer to: Tim Walker (born 1970), British fashion photographer Tim Walker (American football) (born 1958), American football player Tim Walker (politician) (1917–1986), A
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 0x784eca7202dfd5c94867d1bf951742bc4d4dec8668873a4918aa0c993cf8bae1. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94a0c857-56e3-49e1-8312-422ad9639754.json and https://artists.proofprofile.net/proofs/artist/94a0c857-56e3-49e1-8312-422ad9639754.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 0x639e01de4bfb071fde837115b9c74f4e340e0719cb7c56eacd000818659f5fa6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBAJY8102701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0430d44845845324d70ec21c17336988dd87e4b37d35a1ada0aaa95daf6f0585. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBAJY8102702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aca77692911d150c10df56fede20414af344f18380a4615a48a118d4161559. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBAJY8102703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11579a97aac62b4f7028e4ec6ac856ef30bd303409efc9fecd0fc809c3c38b1d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBAJY8102704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53cacf6cd07ed70b5169323ec62eadbd42eef8d590a2343544b3b60a61a4c6e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY8102705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd63a5e7bad0e0b68fcd9878b7a9af050e2b769035392a9931e6a109933a4dcd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBAJY8102706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9db07cf1ff697baba786801c866155e3af394512833ac46f8fb05ec7078638. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBAJY8102707.
6 Irish Airs with Variations, Op. 125: II. The Last Rose of Summer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606000706b714dde241b37a88e461b64544dda3819ddd6c382084fa5a65c1a36. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY8102708.
6 Irish Airs with Variations, Op. 125: VI. Gary Owen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b8229e99c84febab84e78f51d3f5cae31d1e945edeb4c5ee1486d68d25d841. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBAJY8102709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf996e357fb4b642afc0329ef0bee4705f8ee3cd9f2103ca57a1f4f28c208459c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY8102711.
Variations on an Old Japanese Folk Tune "Sakura"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897a9e4097c54767a29708505e7dd41c474e4aab32badc3887dc3bc9f0ae37ca. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBAJY8102712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864cdfd53cd4215cba15630dc91e345fa78bd6290dd96bcb47d03d519fba9146. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/GBAJY8102714.
Farewell to Stromness (Arr. Walker for Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354def30dde2a1d6164263e360a5b44e9b34c0d8b5d26c3c6edbaf2cddae3843. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY8102720.