Japanese performing arts company enra (stylized in lowercase Latin letters.) combines video art with live performance, synchronizing human body motion with computer graphics. Established March 1, 2012
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 0xf725ac32e672863e6bba2d66a7a2a8c27cf73196fef5fa3f6617edc9a3cf94a0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7f7c3cb-154b-439e-ad6e-af1a2f443434.json and https://artists.proofprofile.net/proofs/artist/e7f7c3cb-154b-439e-ad6e-af1a2f443434.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 0x40fcb08acd573dc377ad57caec455cf8c536162164aa277aa6e7464cf1e46f5e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZFZ71916875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609c5ab74d5407c43e7402cf3f7cefea8a69cd047d2c81cc97cbd16ccebf4932. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAET2064623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6407afa32b3e3a1a148302e341fcb677c1366c452da086fc47144b6b7f969. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAET2064627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fc8b346d8a2b18f0e934977f8de48d7bc4c1088f201efaae7451fd33c3b106. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAET2064631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb86e0ffd7f454db5acdd8a9c8f22d37bbd956d80c430fe1fb27a236e8f0119. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAET2064633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d589be3203d57542451870e48a207c4cbf18899fee4f3324e970820caa7e579. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAET2064636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bd74b0c1b64df5d93888497aaa75f3b3d90fd1f9c42e5c25ce5b0969d3cbd5. 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/TCAET2064638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8514ad4d4041532e7517b63c95088c50f85e9ee6fa758f532bc6ce7efae011. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAET2064640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed845c06fdd20ee6e4d777b83337b5312ec383a82728074947465dcd6f23638. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAET2064643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52fedb82dc980e0d5dcd228afae8dd5c27a0288ec81448e1334d6505fbe4494. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USANG2520666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4200f4b49638c811a45afe016351ccfadcb17a9741ae2ef4954e6ccb0095ee65. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL4YD2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe813a770d78bca46fdfcfee6c2f00818906c061791f23a7d4e37ba9da2a320d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ22010914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0614557543671157f30768a1fe5c7fbcafae4aec7e6bd63bb4c4edc2003bd627. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL4YD2200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41713da4c2a8197a22f4f9bb21e12565cb1874bc119c9724f6e565b7f961362a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAEN1970817.