, also known as Sherlock the Detective Dog or Tanteiken Sherdock in Japan, is the story of a young teenage boy who adopts a dog from the pound. Once the young boy discovers that his dog can talk with
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763afc52ef5f87ce07be221f5579697cd0c63ce52e2099ce2cf319d2c4187ca5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d119106e-5bc6-4734-ad2f-9f2872526f42.json and https://artists.proofprofile.net/proofs/artist/d119106e-5bc6-4734-ad2f-9f2872526f42.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3af9019facb47c552b0ba6a95705216b616d0cb7571e037296e07760954e16. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRX991500417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe561241ed42e277fb2e7ff4a5091fb63bca96b3b51da9cc8c02b39151c9be456. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:18:48Z), 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/FR2X41516148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9677ff4dec44f1b3bebb304b92ca284d89ee248a094e6f283829b05c72672b42. 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/FRX991588747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb656eee725c9c7d227c3b2e7be3ae74f23a978e6c748805f87360a25bcad6e5e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR96X2349039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b91c83f78a27816b8d5e731a86711ff7a3bdf297ff739c962131aac3ed75057. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX452365446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc351d4c845eddd700cfebf729a751a691b55c063b5195f3bf675e5661c16ac. 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/FRX872393471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032daf04a3803263fe28d1a5154389294f16d3fb6febbc5707daca4e6c593505. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/DGA0M2382875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50985495a8b9bd9db9016ed08b6abcbbf2bcd1fc6872febf59e9899cf7562fd3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA0L2392255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8e12343aec8d31dca113b5aa968c157d53987c2380fe5381ade57458daddf9. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:24:38Z), 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/FRX762467080.