The were a people of ancient Japan believed to have lived along the Yoshino River in Nara Prefecture. They were mentioned in the Kojiki and Nihon Shoki. The name was also used for a population living
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 0xb2dd002cbd9bcdd0d2e7d21522f098db789a85773f59a8e64d1fc74d4217dbdc. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a10a3987-24d9-40a0-ac3d-e9a6f0d3d1ab.json and https://artists.proofprofile.net/proofs/artist/a10a3987-24d9-40a0-ac3d-e9a6f0d3d1ab.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 0xb8bbac8d59081bd60ae39487d4bdf81f1ebd50876c59d50412310418ca19022e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IT7SU2210605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e1decc3507dd200134ea1665da0717bb5d1a06a6a94e8e790d7cfdbfcb6c69. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IT7SU2210501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfa8c746a84fa6a1ec0750774826663c2130ef93079b072c7a0ef79b3d1b1de. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IT7SU2210602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83ffc35f38accda4c1cd161a27c8f0ce299312dc78e0a9e8e64b7a5f984db49. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/ITZ7U2500038.
Our Lakehouse at the Edge of the Painting
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e1decc3507dd200134ea1665da0717bb5d1a06a6a94e8e790d7cfdbfcb6c69. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IT7SU2210501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7596a105cca5f793285674fbfbd659771dd9e491dff9e2bd8de997750a3c0181. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IT7SU2410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01725c1982703a24ea274b657fd4ca503928385211201c9af50620ea9f9eb89a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IT7SU2410015.