Pu Shu () (born 1973) is a Chinese singer-songwriter born in Nanjing and grew up in Beijing. He became the first mainland singer signed with Warner Music Group in 1999 after releasing his debut album
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 0x10f0688437098fd936994858b9fd90555a9ce877f9ceb6184fdd949f5058cecc. 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/171bc3f1-a027-4680-a88f-ec1e8434ae21.json and https://artists.proofprofile.net/proofs/artist/171bc3f1-a027-4680-a88f-ec1e8434ae21.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 0x44309558fda9a8898357a4b375e0226764cd6dbfd1d71ca7db3b3089ff21735c. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:30:02Z), 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/CNZ171500588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f36ced1ffaff73daf2729570d9d779e0e2d9105ce78e66f6231abd1d04ed2c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CNZ171500591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b08807d93b0ecb7a47fb745ed764584ef12fa87d1f6d3c6573d86cb2102836. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/CNZ171500593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2606c7d15029fe8fa48c6a43dc451aab9b41aa29098d83717676eaeedc697032. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CNZ171500595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4484a7a647b3cdfc4325f56a90928690b7cd44762db96c629dad2987ac0e86b3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CNZ171500608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc577f8cee1a58c33ab5cad1305530b3aed9ffb0b2c6d7910fa76a209ffb2a6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CNZ171500609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cf11bb7294a1c7486fb7ec86593d4f3e8399ac682afe9ecc767c218507b149. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HKE670700190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a1117a772fb66118688c60efc105b49101bea8d63774358145344ad229ca72. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:14Z), 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/HKE670700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58db49709d149ea049cb334223af7836cfe8cfeb069b2441df93f2b5f4f2ba4. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/HKE670700169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a863cfa5a8c39b9bf54577c7bd4e890fc6597e08018cf476c98bcfa10b4cf10. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/HKE670700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbba679255bf3c849e1ffb129ec111c05b71a7de3ab1d0be2a23189d9fc2990. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/CNZ021700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c376411144c1d4e733793a03ac9d9b155718a9a1f68b36292bdb11ebf9651f. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/CNZ021700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7c1a6807a4668ed4cba9cf5c26dc933c86a48db6c4ae41849438e0ca6150f0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CNZ021700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42b6760ea485e9228dee7153069c2d8758e575e0d8938ae8666afd9ce320ada. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CNA231702702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ce179ec9790619370a5f755a48a2979a4300174532daf44990e8afe1d5fcec. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TWFA52400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565d273fc890c1c3b76f29a5c154af805191b608e3e89c2aab307cdf71d56362. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TWV671900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d5f5134029f783d3aea8fe086c1a6f0226ca5aa8eda22aee2f197ef958fb4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TWV671900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d5b8c43f95ca28e3bdf6358f9da62bb1dacb774753c666514c22054fe57b67. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TWV671900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6f8cac34177ddf3dd0f59eddc7d7820dd896c8027c6b56f98ff5fe3eeae73d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:02Z), 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/TWV671900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bacfa7836a7e3e2ec1c2d1a45f6d02448c012f2b5c1ebde5d5069ff5cb9a531. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/FRX872149451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42297adc007cdc9a916a4c26d2c33f38529cc716537b68b2e82cf255e97439b9. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TWDL72010848.
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 0xa874942172d74ed1e74a71b772a55bb3f9bb044d8262c5dcbfd4b9fac281379a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TWDL72010845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3d1b2e868ebcc9ab154e44bbe6fcad162998c760a9aa5dd30092b18f36a37d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/NL8RL2430051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fbf2dc0e39957c89422853de92a19525719b26f55fbd2cc33ecb471b228ee5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR10S1987477.