Yoon may refer to: Yoon (Korean name), the ninth most common Korean family name. Yoon, stage name of Shim Ja-yoon, member of K-Pop group STAYC. Yōon, a feature of the Japanese language. Prabda Yoon (b
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 0x7dc596af39230af809cb18e2749098c93df31c53bba99a20bc1f12ea0cae2dae. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c8d00e9-21be-4a0a-9086-5b1b7aa6304a.json and https://artists.proofprofile.net/proofs/artist/5c8d00e9-21be-4a0a-9086-5b1b7aa6304a.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 0xe6abc076264e5565cb3b1f56e69026524c324a32ce697b67553d134a911def86. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAS2359819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bd4a851d924994ac591683213fbdbfe2eaa338a8e56d305e73cdce0ac3d6a3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZHN82458902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9f2080e71a5911cd7f33f5ed4de41b52f98274c2ca31edbc42619336bc7579. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWQ2452976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7229a18fee09a78459a350f3a5dcc62577383c1e5eec3d3ce265d026ac3f3df. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWY2481518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7229a18fee09a78459a350f3a5dcc62577383c1e5eec3d3ce265d026ac3f3df. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZNWY2481518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b7f8f3cf4ffcb5068859da09218834be15738784198807bbcb35dfc55bfa7f. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZTB72488900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a3a161c92679a4cff66a55b791f0049e33c50b962c2381954ebd216b06ac7f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTBD2428990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8bb11212f1685cdb58ff48409b2b3286d30472df4f566c39123b6606c49cf6. 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/QZWFL2405204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deba510ad68afb1ee191dd9d802a406983b87b5ad1c3b3cecca727797dd41d6. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZWFX2443103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f315e14c1120ff75fe5dbfdf15c5c82722f6b74f30e2a4ab966efebf67676c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZVEM2526399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ddb2a06a7b5e12e1d51859401a439bd2aeef8eed384c61f07dc5ebef624a7f. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QT4K32541552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf48c8c8874553c79af67eab292fbb1c7ac454ad7807522b21c52b3cd5ab2b6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT4K32541554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f71227dee17ffa9ad858ec686b556364c31d0ff21aebf8c40721d78fb72faf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT4K32541555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f315e14c1120ff75fe5dbfdf15c5c82722f6b74f30e2a4ab966efebf67676c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZVEM2526399.