Chae (), also less commonly spelled Chai, Chea, or Chei is a Korean family name. Its meaning differs based on the hanja used to write it. Overview The 2000 South Korean Census found 119,251 people wi
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 0x7c267cf0b2d3b8a001b72e0b56a39964975725c697894b618fb08b448999cf76. 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/77088e83-0954-41cd-8ad8-7df31125bf07.json and https://artists.proofprofile.net/proofs/artist/77088e83-0954-41cd-8ad8-7df31125bf07.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 0xef1c463993e1f7cb804219471b6c509a04c08e9b2ef3fea487f12c29c1494855. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZP7F2472750.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75da36a7235f8d97e5791210d5bd1522591ce66479b129277b6c0fe2ca6d02ef. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CAWK52410920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd73e78b24f8a1b8eb87d5d088d72f521ca0ed70a014dfeede664280c90a433. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/CAWK52410921.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8c074e3c8481d7c00ef07a720c49b37366e980bf4af6e3bcd3edf61eca079a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/CAWK52414432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49ab4e381ed8770738e851d2e1409a6a6fd7dbef6dac3a7fb45e006e32591a7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CAWK52414436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc76fe58fe7d642c61118122f643d31048e182abd10d43c1749034c8cc158ce. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAWK52414441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768f96a036aee4a1b8dfc7fbe106b34dcf1f9c8911a0e6de1978bcd849df81e7. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/CAWK52414442.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52d54b337f9cbe82fc7502e3bfb09dcbbd92fb561d8de9b9b25c782ee3040ef. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/QZP7F2519912.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31f8aa580621ade26fd2c165edbc3cf181d2e4ce5e872ea093f10b4ca5576d7. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/QZP7F2546014.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa2915973dc81fe2987dec5d56769f4616dcfe54dfaa6cb2b85bf47875c8adf. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZP7F2546015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39eb6cbdec37c1cf7d964a008efacf4b4739fa9520927ee61805125d66c0d08f. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZP7F2546016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089ed34727761dfd882b0999649fbd297c1393fe6e946536689a3c427975ce52. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZP7F2546017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039ddfbf20c01a296e18b94b9f7403b28853f2417745162cbcf53a58460050a7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZP7F2546018.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb18cd6247f36b2ac48adf2ae89be7958b636c3b2c5f0e9d6f6abfd4efe7f84. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZP7F2556287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbe15d90446f5693e65279bb2fa79256e53c6f3ec47c5f8edf78c6f48f1976d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZP7F2556291.
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