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 0xeda6d32546a8618ee4fbb241a1fbd7ca6427ca38d1da039673b1e7364461bcb8. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/449689a3-dfa6-411e-8ed0-e58d77c30182.json and https://artists.proofprofile.net/proofs/artist/449689a3-dfa6-411e-8ed0-e58d77c30182.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Treasures Of Chinese Instrumental Music: Pipa
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 0xf16f5fe1c294a2685518af09e29abbcad62852e58ceaaa909a50bdd45055f6d7. 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/CNE049434202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7588e5bd6dd5922a1e1c3d411adcf892137824c8e624ebca5eb85fe39fa303e8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CNE049531606.
Feeling in Autumn Beside the Dressing Table
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9502516d40f54962d86bd74a0e1e0470e99dd794d9000398a8488d0a8c578e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNE049434008.
The Autumn Moon Shone over the Han Palace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133f024e08a2d8ff6f9845f52ff04401b7722d87decab7122e9414ca9ea939c9. 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/CNE049434103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfcd96e20dc39961f98cc83858b358f91b2f9d4806d27fe3d23d82dcd031ac1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CNE049632407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e3672ba90393c36c88c50b1d8604413f0a5583c2513265d733f1db13dca42b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CNE049847209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfb1ba25b8c7995f944e5459ed9ce4c5e09f4b83252fe3e08b1460bc65be801. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CNE049738803.
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 0x04d8507fdfdc256d7c5b048d943f63b927be20cb4f64ecc70eeaf11a33d13275. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/CNE049847305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940b909e798f74071e3c8feff44d6d0c5531d2fd1a3b78134b221683db1f198a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/CNE049434203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae81026878ab37f94af2797aec32facd9396f0455964a394febdeb24a138febc. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CNE049847203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605eb57eee69e589a270be6efd96bf3a60401a1559050f7ab0e0f4ab67b80ecd. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CNE049434002.
Master of Traditional Chinese Music: Pipa Artist Lin Shicheng
Chinese Ancient Music: Remembering Playing Xiao On The Phoenix Platform
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01f4cf1b80918873850e408c9d85ffcf87fbca86c1a2500f32f898784497796. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CNF130343401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1fbcced0ccbb559d403a7595f88cde11b9a9d7ddb53a836aaed730ea54c46f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNF130343402.
An Autumn Moon Over The Palace Of Han Dynasty
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5af125a0f45c9fdc9325a7313c6884ceb0846385a3798fe84b28da37fcf7740. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CNF130343403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61829b22738d8e733b1c31c50a8ab792c3dbabcd9482455bfdc1c44c1893a602. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CNF130343408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ca54fbc994877c067e6430a29e2028cd7d9bc4aab631b18a79dbb41eb093da. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CNF130343410.
Remembering Playing Xiao On The Phoenix Platform
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b0b335c6a088148b531b79087d399ed600a0bcb8ddde926f3a542cbae5168b. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/CNF130343411.
Masters Of Traditional Chinese Music - Lin Shicheng: Pipa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f98a55bacb8923d55576ead72ef56729ae6d010e02580f9ef41ccf59786cc5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR59R1876715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6882f6b2084eb0200f9593ec41d927671a15211b280132a909fda1c7fb7e30d6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR59R1876716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e70a1aa53183a5ca1e1a3b3f70e8e71e915fc2c043e15b7f94fdd8e578d6cfa. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR59R1876721.
Treasure Edition: Pipa Solo by Lin Shicheng
大师集 1 林石城 琵琶专辑 (2022 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd41f505f6b8688ee845d9950cfe39913d87947fed8ee5a9e9637abe594ea889. 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/CNG010234402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7be867f3f21d3b55aefe1498d5cc2e465260b70812d011b7a3ff5f5c2ddad4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CNG010234404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee38680531f437b851ec87164ec8f26d479f8e8f885f1effb0c5cf4959e5d51. 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/CNG010234408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edb434fad19d9151ddaf24b9ba0f0c0403ed93934e7040e0d9f89a637b21af7. 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/CNG010234409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4db5e91da4fb89f352e9f886f5f540f84c3fb3f95eba6c4da2cf957e1e685a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CNA089701127.
River Waters: Ancient Chinese Folk Music
The Classics Of CRC Instrumental Music Vol. 1