Piao may refer to: People Piáo (朴), Mandarin pronunciation and pinyin transcription of ethnic Korean surname Park (Korean surname) Piao Wenyao (born 1988), Chinese professional Go player Piao Cheng (
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 0x43f4e6f67c7cecd51ed43cf85ef73937ac76adde843ac794cd7a7245feebd4d9. 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/52e2a0f6-cc10-4de7-9e5d-8bb6c0e95ccd.json and https://artists.proofprofile.net/proofs/artist/52e2a0f6-cc10-4de7-9e5d-8bb6c0e95ccd.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 0x02ce70b614816a157e6407118d7ab6f71efb733d19dc31b6472561a20eb6b805. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/SGB502249217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713c95aba5497edbf4b1ce16f07ddb89da45b278a7395d5b81024d6af70ef10f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SGB502250247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713c95aba5497edbf4b1ce16f07ddb89da45b278a7395d5b81024d6af70ef10f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SGB502250247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbd83b66963a5e71e547a98d6af93fa84d08a02c29433f02a6a76767a45aa56. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/SGB502250954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbd83b66963a5e71e547a98d6af93fa84d08a02c29433f02a6a76767a45aa56. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/SGB502250954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b92144450fe08a23bc9356d7f399c397208c2b5f97f1fb0be67c35b612550db. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QMBZ92372891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b03b6429a95eb06264dab988aa684a8388efc035d86e6308bbb562e136bfce7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QM4TW2408709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3292d169f90a9706c9d62acb41161351971da5a3593175730ae46d84c334fe. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QM4TW2416523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0d3bce11254381eae69a0a8a5a2cc7db27ec139f01132c08c15848248f112c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QM6N22475741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7d9b5aad974a816eb54e48dd02715f3f7c8514411057bf977f6ff10dfc71cb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM7282434209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897342bf49aabe13ab27acfb43c2c5a06cb078f4c3fe783c964fac68a41d5b40. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/QMBZ92428029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b0858d8f3df3341551a74a54596ade7b066dbefcee27c3bc28058f47ccf974. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QMDA62437902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b0858d8f3df3341551a74a54596ade7b066dbefcee27c3bc28058f47ccf974. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QMDA62437902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b0858d8f3df3341551a74a54596ade7b066dbefcee27c3bc28058f47ccf974. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QMDA62437902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e02116746b3acd7ef42c9a8797d00c83c1c2a2b15a25c24ec9deb32b385d1f5. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/QMDA72491648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897342bf49aabe13ab27acfb43c2c5a06cb078f4c3fe783c964fac68a41d5b40. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QMBZ92428029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b0858d8f3df3341551a74a54596ade7b066dbefcee27c3bc28058f47ccf974. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QMDA62437902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55128aeb45c63510418ab0882d66d47f3e07b4dfbd06438a3487ffc883dbc575. 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/QMFME2478639.