Christopher Walker may refer to: Christopher J. Walker (1942–2017), British historian Christopher Walker (athlete) (born 1968), Gibraltarian triathlete and cyclist Christopher "Kit" Walker, the rea
{"copyright_id":"0xfba268a32de2ad68a2e8b264cfffedeec6e61c71eb22f88c17c8284841c596df","name":"Christopher Walker","registered_at":"2026-06-12T00:38:16Z","symbol":"NIM0144627","token_address":"0x613478c67dcdce7423b00ae5d2ea60ed1bfaebbd","type":"artist","uuid":"6ee1abba-e43f-4a01-b5a8-c06f0756e351"}
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 0xfba268a32de2ad68a2e8b264cfffedeec6e61c71eb22f88c17c8284841c596df. 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/6ee1abba-e43f-4a01-b5a8-c06f0756e351.json and https://artists.proofprofile.net/proofs/artist/6ee1abba-e43f-4a01-b5a8-c06f0756e351.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 0xfbbb8746f5cfbf2c5ad3162e0a42664cbd913e568549be6b5624f6e57903212f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA4N1301239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc440257c921b3e9e2c275801072df8215e2d9fae09c204483e75fffb68e6ec0c. 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/USA4N1301419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700961402a9c0e65e398738ac66e83069f905a0a708bec74280545cd21b97787. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA4N1301579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a93bdfc2aa299a6c4a49d642ea63482cb59bf6a6f5644d5cf3f03be1632664f. 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/USA4N1301558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec46102f7d3ce8de2685542ccad20e4058ceab253444ef96bbf642a5b8f591e5. 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/USA4N1301880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1eda2106229a65d9651c6d9de17867c6ac8af554690033ccde0db10de25c8a. 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/USA4N1301665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97303b15c454648b9e7f8d20b781b33cd41073901939eb3fc96981b668317489. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USA4N1301441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851cf6628e3f3b3b0e231c7fa8aa375e474acab400a284ece8edd54ffa092302. 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/USA4N1301898.
Psalm 104: Send Forth Your Spirit, O Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf469084cd982f32ef4dc272a3b0e9b88322c39b2e86fbb4ad4ce1b6e8ef4cb27. 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/USA4N1301080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287ccaf869d189f947a6ba2d982f3076224c91e66b9fae7b36e1f7fa019324bc. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USA4N1301878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31520c66690890f10d4c9ead6a9e975afe747f9da38109dd8c912e87d2e24c1. 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/USA4N1301702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a6c7090e4f1d13dc9458a7357c5b3f376538203b44c1cb121bf0291cf61d76. 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/USA4N1300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d81b8cb73715bd2c8b2ba950b342740c780a53294c2bab1f1f6043e380c6b4. 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/USA4N1300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dd2a34e2549f9d24e17101fb985bb8175dff2db237bec82ea1a8d2b22b5fb2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA4N1301246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1995297bfaa3e1d53ee5f1550210689a4252ee8f3477757a7b1278d8e837f6a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA4N1301764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c3edf4e024a6ba6525d5284403705a7674e7304c1e75e0f644c506c65bbbf5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USA4N1301554.