Ch'asu () is a superior military rank of North Korea, often translated as Vice Marshal. The rank is senior to that of Daejang (General) and junior to that of Wonsu (Marshal). The rank is seldom best
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 0xc85f5510c3053b6d915242c4b27028079c1efe64c7ac71bc6a225e3bb682b707. 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/fbf2cdd5-03d0-4fc0-8ca5-4c60469a928e.json and https://artists.proofprofile.net/proofs/artist/fbf2cdd5-03d0-4fc0-8ca5-4c60469a928e.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 0x796de88e7360e00c94acb0ecada203ccb05dc33871c04e5424796ae0a3b65ff6. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZFZ72172135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd22abf0cac6d9d3affa2ed7f9317d73a00314c6c8d05d837fcae2f6ba9f4a8d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHN52195699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08045cafe1e61dfebe715e4e309e7d3aec505eb010bae877d0efa54c9305a659. 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/QZK6Q1976990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001b06b84c8681ea0acc344e79ffd8033569fdaa8413b456e9d8f5521f1a1434. 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/QZK6Q1976991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7e1ca20d041244357bc704381568ca0bed7e1bd10164b1342336cc1c09f1e4. 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/QZK6Q1976992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52081235f96fe19fcda33c7a288c46498ae15edb978dc0f988703f671632c03a. 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/QZK6Q1976993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465eb41eaa4e32d064c50357b47f96a74616a7cad3c8d7b3ef54d5a98568b64a. 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/QZK6Q1976994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024431590ae1123991a92621cdeb2be79b197161295c5538978ec7818403adc0. 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/QZK6Q1976995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908d6cf29f5854e25ee62a0939daaa71bb065134f60067e2d567c1ea9aecc3b2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6Q1976996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f146f8255de42d306fbb6c0e0dd7ef192ced2ed51829c1b9f2094d39d05fb2. 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/QZK6Q1976997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f265afce2fb634ba1bf873ed2eebe69535a805c3a535f2b4669c8e9fcbacab4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6Q1976998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a3a86e87091219c587ac2007becf8967daa8068167e50cb8296fb91fa09add. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6Q1976999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066d4ead0b46a3b9b338b5bd308f9776c4b12d6aabdc5e005cb1fe5c5baada00. 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/QZK6P2074614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6273368e6e11262ff47966974368d63e057c287aaf84876dcbbed0ee953e9fbc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNC1914576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240b2b902e29dc6139d85174da46878a80f39d1c386d1e0483693d291fce11c0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNA1921646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb144e6c1738d96aa159ce25c8450116a0f5de7f930ad5684298960e9429644. 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/QZDA41920973.