thumb|The moon on Musashi Plain (fox) by Tsukioka Yoshitoshi The , in popular Japanese folklore, is a fox or fox spirit which possesses the supernatural ability to shapeshift or bewitch other life fo
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 0x2c00dd733707efd385664fac7f6cb4cc0620edd5e6c6b8a2d368b313adee7f67. 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/5678668e-d105-49c4-95db-982f5b243ff8.json and https://artists.proofprofile.net/proofs/artist/5678668e-d105-49c4-95db-982f5b243ff8.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 0x676d8ffcf9b59be9c294b7eef4d6785b206724a0f0b38b879700458c318968f6. 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/GBSMU8845933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3f368662081d2cd038878b1030b06d87d294495c681726b8ee853e28109d4b. 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/GBSMU8781072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15efdb1324d0c8025645ed444875bcc249a82ed462d9af03d7ef8aadfaa3379a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/HKG732148822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ae9164f639306d906b80d3e5cde45dca97c0aee993626ac2e1c458891f0a7c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBLV62127264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da7c9629e3a2361f893e2e4e3f4486a310048e7bac8d32b8cacfdd427edf0d0. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZES82406262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106e21e5bddf908ee1026cd63c10371e662a4087054cc713a51e03d0f7a3bc7c. 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/QZWFV2554561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b76b4915df8517040f7ff34c79682b4794aaf2e481cf60e43fff23b8af64198. 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/QZS672207262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3161289462b64d042e99ac0c6e0bac632de226fd9633c2ddbe4fbc2bdf3ee0. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZMHN2012774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647c2ac0a7827bd45c247ad0894967b6101588df40bd1d29733207490465c6c5. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/SE5BU2077545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4e8cc10f8151ec1e29609f31ca28e70e8e73f519de7267debb798488f8d905. 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/SE5BU2077477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1e0d6f0ccaff8f45b187ab7006915418133dec15a3be56738743179938febf. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/SE5BU2077478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cab2bd9d7cb37658a95fec661c0c50927d3afd3e602697c99e7c8223c3817c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZS632183482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdc6af08467f3ec64a2cc4bd4730e4fb7d8b9284f670cba32875497fd268757. 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/GX5MX2247964.