The is a fictional divine magic sword in Nintendo's The Legend of Zelda series. At times, it is referred to in-universe as the "blade of evil's bane" or the "sword that seals the darkness". It was in
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 0x7077d261d1060e55935bb9f2a3a524a8cca118a347560e342ba44ebfc33a3dd3. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3c831e7-62c0-4a57-af1c-365426f8ae2a.json and https://artists.proofprofile.net/proofs/artist/b3c831e7-62c0-4a57-af1c-365426f8ae2a.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 0xcd51afd6c96c096e7628da0356f89f5c5f08e3ee26513c692f8b18783c05b490. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USL4Q1986978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe26533c3dbb19b2d40588e4cefe1e9285a042a9d667660f73b8f49e84cdd4f8. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USCGH2524690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8ad7c1425dd1d0bae24dc4474be0b6c9ea22b96af41b09c9d5f69747ce912c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:39:56Z), 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/USCGH2524691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23949820ed0c6ec6865c0e4d5a798d86030bcc42d2518963149bb7a61f460ffd. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:31:13Z), 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/USCGH2524695.