Chris Walker may refer to: Charles Walker (British politician) (born 1967), also referred to by his nickname Chris Chris Walker (actor) (born 1964), British actor Chris Walker (basketball, born 1969)
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 0x04e11805d25f8f122ffbdcfda8c0fa15ee5ec510f6e87daf57dcc3c759ff9fbe. 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/c73586a3-7653-42f4-a2cc-eef50189752d.json and https://artists.proofprofile.net/proofs/artist/c73586a3-7653-42f4-a2cc-eef50189752d.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 0x308d376de826a7bfbe0aa5e503b24f3b8d5d0766884a516da8d75545c2dcf8c6. 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/USCA20702773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c401a58be5bda374de328568cafcc1f70dc253fee7baea8eadda98031b10ef. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USCA20702781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f43f0b6800699283a3e5593e390ae5af6a1fee7314285c8af00dc8b92765d0. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USCA20702782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4265ee24e56bd3f93c5e31cce48afa293b1e82ae1d9a5984a39b3f644f089e9e. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/USX9P0669021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cd30bd7d94c59c6005550dc8278ef54254c4b03c32d4203cec68b7dbe5f025. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USX9P0669023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974c3a4d3b4b392707346d37db58b3cc5e798b4ca1c5a85fa6d4d0193174c7b5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USM5J1100008.
We’re In This Love Together / Celebrating Al Jarreau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a38801b39c69ab85b199f5734cf717f1fb6179dae50fcf7c76735e3b16f745a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFQ71900007.
We're in This Love Together: Celebrating Al Jarreau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f470edd5f7813516d188248ab489ec7823fed80caaa7156dcca6307c5860059. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/HKG292000093.
We're In This Love Together - A Tribute To Al Jarreau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f30afca0eb4867a3a7dc325b563478beea8628346655ccb9e6431b92fe47ed1. 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/HKG292000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4f0826af7c5f63348e7b3ad08d2688d24ba060cc5d6233a1ebeeccbf2e25da. 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/QZFQ71900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3087d8cdd3306f2cac2bb31b4cce0e7f1dfffddbb17e74a99273d2a58fc3132. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZFQ71900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9953c23b0528a4f2640774a01049a16eb6ec8c1a8834618d09f4630f37fb2eac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFQ71900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bc17b20cdd833936fe6f62cec31229d39fe0dc14309d9660bb9e9f39c8e583. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZFQ71900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3770b8a7ec443f44d5c7ec6343821766112f86e6149adfca655f1931616cc92. 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/QZFQ71900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a38801b39c69ab85b199f5734cf717f1fb6179dae50fcf7c76735e3b16f745a. 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/QZFQ71900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ff0a370258cea4766157586ae624152b2992971d29cc4f10725a2ec6b55da7. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QZFQ71900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900a78f0a686335f0e27dedaf76840f10e7cf25e4db8818b7c67a962f41e4e07. 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/QZFQ71900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d34aaea03865d42a067ca277a114f08f6fc78afd064563269a6911e567a5ecb. 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/QZFQ71900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfc6675a1b11119dfd2d116416065509456bec0b739e2f00291722e023e2330. 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/QZFQ71900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9efdbdae9ac9b5c9dbe536d4145e49eed8a275aa8b5bbb598846a89b57618b. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZFQ71900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78eb5020d6fc809ee835a4164516133b2895f5a4d13d1e7a5e0ba4dc6d19eee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFQ71900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3906c817270d641e5d5244df823d0f0c0224006b1a547fcd2c3bc24e24c9b462. 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/QZFQ71900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19e3e58ee1c94df1359c205e61c09332b73871a287722fc1539be9ef3a7164d. 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/QZFQ71900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5161d57d86d7f1bb49091e5c3bdde0287fbbe71cba75a1f2c9f3a7e9c859e993. 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/QZFQ71900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf821636c91e9e7f44efc63feffdb3377cf25de98ea314fc7e1e06dba15dbc597. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFQ71900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87698abd1263e4a3d782e3f41fcdcc832742f564cda51314bcb494a91bc04235. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZFQ72000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3913076a66540eb428bbc1d763c668be2c5477645d11657ce1c95194cfa51df. 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/DER412200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa798cc6dbf8e08198be996bbe6e9a9f88efb34f42b20934a5a96bf91b9a751e7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZKLC2481722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c2723881ce3cc246987d4aa221d57529c5babffc5ad61e4c10d5ca116e8e18. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZKLC2381702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847b27b5d540fc3980370c355fa442f10a08d1dbc02a83cffed0fe9982c1470c. 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/TCAEJ1960124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0478325f4d35c16e3f8d70393b3027d48d8f3be1e831966e513502d676bf34cd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMHCW2028902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd08ba46c02497a88c3db4ffc8b2ae979905c990b3e8dfca1fc636e91c65db6. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/QZARB1871219.