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 0x47916214b1b048d4bbdee9b5198484348795fbc85a2fb4e6593b80111732f0d2. 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/e55fb896-de73-49b8-a739-d605fb2ee4b3.json and https://artists.proofprofile.net/proofs/artist/e55fb896-de73-49b8-a739-d605fb2ee4b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
《仙劍·夢圓集》——仙劍奇俠傳歷代主題曲音樂集
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 0xb52b654e16fd5d3aea0b7666f6bcb9833c5b4989f991b3180e9f27906ae93431. 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/DGA062410592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6243fae0bb3009ab6215e680e273f8a06f3e4cda64ab8e821c8862cb9ea9aa2d. 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/FR96X2287085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a054d1dd213aa4838f44262bc4f82d540b7c3661eef40a1bc8ee15c80c26d4. 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/HKG731894391.
拒霜思（《王者荣耀》嫦娥源·梦皮肤同名主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf68b359cb48c3d4f6940fcce94dba2ea381d3c63cb8e5807ffec00a540ddb3. 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/HKG732011221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd3367d82b9a88e87de96515a54aae0af28a59990d5590322b8b7b6a0b14066. 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/HKG731627534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5756fd2208329a5428ddb741ace7b6c83a9215e412948ce8102e6cb87b7fd1. 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/QZTAU2458306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a1504cd1f0d34a3b6a398adf32816a980a83e50bb691abda0d220deca6cda2. 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/QZTAY2416797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09db4ea3ad58fc6aa98dabd3bdbcdb35a3cf7959cb3eff282c296a8c9977e63. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTAY2416798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c14ae0811ca290c7b341d923a697fbfe9af4a527326de1f73b0249fde853890. 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/QZTAY2416799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb938859851a7d8329737fd60e1351178ca511170703ce475b7988c9b00b94421. 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/QZTAY2416800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196c7448c07be1b1e8c2a93561636413beac12d7924d4af534cc0a6865120dc2. 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/FR2X42222243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a72e749d7fd3b7e6a6b9354690d21b58ef7d42a442a4407a35626a0f86ef671. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR2X42222244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9c5f3d7b57ee3f215fc92a09c1ef6c8fb8bdb6b8ceb590b8786deb9fc23b6d. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:26:35Z), 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/FR2X42222245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45b44d396ab4edc745472341c518709324926bd14a019880b88117a6e29d47c. 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/FR2X42222246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41be8c5b49e5a6f475f2f6695975248198d1e0206fb84906500a85bf22163b3c. 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/FR2X42222247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc8da822fad954b6db7ad63f618e6c4902129494ddc56d1002a770778c682f8. 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/FR2X42222248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8276f9b479b9c10b9a285a5ea1e7abf7823609f8adc7f2843473ddac1cfcf73b. 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/FR2X42222249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b7d91ca9b3783f94a9285c5ef540ddb37d829d0e72ddc3d803d75210ebb16a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR2X42222250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be2de5e1de7437ebd90424efa62dcc69a3d4dffc5b3091860106306ef15689b. 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/FR2X42222251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb2988f8f92385d6b14c3a4a4dead8ba33af75065c22c8cf7b37b22bf224a7c. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/FR2X42222252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b2c8fb536f43223470afe9279ff383bdfba474c39b1b28566181a29f4d86b8. 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/HKG732318078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5288c2ded05f790ced6afe562db740d3503e1d8581c3821ba4cb1e185d4ec21. 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/GBMJG2309686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501ab140669e4f8024112d37f7eb505218b7cb04e116ab5cf21ceb36e0d5c2e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMJG2309718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a9de1b9f4be5a5334f05ac1442ed9fc4639aa4724b6229a06cc341d73ad790. 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/FR2X42401798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe17e34e3bb3bd622ebb5af22e982ddf9010fcd075be72e7bb8cafb9df3ddeef. 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/FR2X42401799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd921ee972eecba5460cc1fe45eb600cf1203c62a2a34de59425f9ef3127a5fd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX202486536.