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 0xe4d1d4f887531b3a2676750b4914fa4f6ef3c3996876242a518aea68629060ce. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09e13afe-c4ab-43af-b335-e62879cc9bf4.json and https://artists.proofprofile.net/proofs/artist/09e13afe-c4ab-43af-b335-e62879cc9bf4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
风花雪月颂 (和平精英《风花雪月》主题曲时装专辑)
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 0x2c743399b6ff3c14a72454f0aeea3f68eff3e9210000c62693f3af5ec05e41c6. 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/HKG732290553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e14408a2ac2d8a1008e07f2252d0505e896fc85a75ec261290e9047de70b807. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HKG732290551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6f4006640c64112d600ad080882582cfe94b975be3832eab00d42cf6ee8ff0. 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/HKG732229486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813b8dd0181ef5488e52e28d498188e868ca0a7a14428bf2bc64b82fac5c4cb9. 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/QZZ972303780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00966fc03e2446bf5b45d1fbe9b3546877bce24c41902215649e950acd47af22. 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/HKG732140108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bfda442758e858e3fc39a1c0a82ba17e54e8dac3d719dac62e4dec7e7a8cff. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HKG732140109.
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 0xf46af8feed3613d561f5704fcaf12ab59ec2adb56ce37ef9229acd7460cc8800. 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/HKG732113045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abb9eccf15e0df3d2ee77d66c0d3c30dcdb6a356ba31ebd25928cc301955b58. 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/HKG732015060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bfb5a1d7b3db696fe4a15acdce81189a53462ef612344838a2d8896ed37431. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HKG732015061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575e6fcca105cbe724e485d8414ba959b9b1b04a725f119b2b1642a9d96cb026. 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/HKG732125564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c157aab75f75d6ee2409ec93bcf501aa5631d1033a0f82300e10caebeead65a. 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/HKG731698836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd221e2fbdb9e8910d5ed6a9c8ff021595ace85709a5552033061859ece5ec565. 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/HKG731698837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605d5a57fdb52a091d2ece9a191fa087cae5679d68a68c845c6b3e8de038b3b3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732118003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce7785fbd9ae789a515707ca7fbb74dbbf7febb2b6b644ed2123a5bab3474b0. 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/HKG732118007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3030712506a795fe44fbea88a1a5fca5d83349e48f8078215c188dfff15ed24. 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/HKG732118015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb417ab313d100df598b881484027d94c53b12d247dcf51d4d7fd1d0f8a7eb139. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732318625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30db5a27f2275332a7c1d4f7f32162b699e205ca87ba3d59a6133d9b9d7234fc. 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/HKG732318629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf183013a762c8fa270f7a6e6e798128d46e0f84d9c885d2ff218275b8f8016dc. 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/HKG732125527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0776bfb6d9f24fd4728836a1052adbf2ac9861c19ab1946ee0bbcd5a7e6bb4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKG732125528.