Yoko may refer to: People and fictional characters Yoko (name), a Japanese feminine given name; variants include Yōko and Yohko, including a list of people and Japanese fictional characters (for n
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 0x8dbccd0febfaad9d0621c9286ec884e2af8f53e25f96058dcca0e23018bde271. 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/07458c85-1f48-4838-b83a-4dcc28308612.json and https://artists.proofprofile.net/proofs/artist/07458c85-1f48-4838-b83a-4dcc28308612.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 0x193aa02de7975dc526691297b246c8914a32b391a47ece11127b208b3cf8c05c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN92235865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e811fafac71418ef27b79b71f4171805bd3908df3d340fe89eb89d4f7cade2. 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/QZHN92235866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29b53800fc23b5ab03d956eff863ba74c1db25276bdcf63d922974eeda0997d. 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/QZHN92235867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe269ec97d17faebda3cca7e0c435af1784fad77883e4f48697d0312c3267b4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZHN92235871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481428413e921f64e269d0c92886e87cdc6a1bd15da876440f49bf8e5abec526. 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/QZHN92235873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa996177ac1bd69abb96b211e006a328cc849ee7ac89560fba516b23c9c5e6c94. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZHN92235877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078b8d46b75455aa222c7b9c13ea2638b39fd534dbdd7af13dbc6ef130428ba7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZHN92235878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca5987987d8d5dede6cf2a191140ccdf34abc7e427e67fc5ca488634df5b10a. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/QZNWT2280363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdef621af2b649eab724f460b6bd2edb49c4e5fe770169a7271ad7dbcd47990c. 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/QZNWT2280364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeae512789b1b23b68c3876a4ed6447b90449a538499b1c33d517096f795a47a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNWT2280365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afe39bbe4c69c2233c17d9a0c4c5b68fb68582aafc5079fbf630b89c286895d. 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/QZNWT2280366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd713959203e2f696197526f5834da6531fc43ec911aef4466ea29a41f2dcaf0d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNWT2280367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf225a8c28255a01e81b1a8e9c20e4de9f57d4794ec2396929abda5d5b330dd9c. 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/QZNWT2280368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5c0a9637f416f63b03eece29ae99f31735716c7e32ecbbe64a42d87ded03d3. 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/QZNWT2280369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba1c7b243ea849b77316015873d07031c98f40c73739952e4dfb3c39905c98c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWZ2488792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6984f9d5b607467b77ddc47a3f0995a79eda568de475d28b21d4936ad724b2b7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWZ2488793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acc322877dbcd21555d8efa35a2adbdc969f88a880fef4a7dfeac448021f455. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWZ2488794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d60dd843867a6149a05ebe9ae40f1309fabff3c1f91f2ec22b23b4e9ce9504d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QZNWZ2488795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbafd5dc5723bb64d0a54a44b32ae45276872814cff724ce1b5809c67eca9225. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWZ2488796.