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 0x1dfbe7d8ecd0658b0742b27cfd4045a04317fb2776f8b65aae3708e676ea3d51. 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/5795eae0-5829-4309-8e37-334b8c95a7a4.json and https://artists.proofprofile.net/proofs/artist/5795eae0-5829-4309-8e37-334b8c95a7a4.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 0xe81ff79f13dff54b459e9f673e5bcf015c57133dc5c7f3a001da397e381c69ae. 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/HKD012356146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9008f0016927bb4c236f0129c6deb1f025ad7bf331e0a8cf9ee6b1c124e759fa. 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/HKD012247987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92758503b41ee2f31121815d72e48eef6c921ee6711e856eb133c0dbd069a15e. 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/HKD012297509.
酌影（橙光游戏《与君共眠》寻影专属角色曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bd94012f6a8a86f5977843b1e609eb6597155643c834f8ab394ae4e650b621. 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/HKG731656771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3ab487782591ec7b67ff838f713e7c1338a4e7481f545d92b957a3177a5e44. 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/HKG731665398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219dc7d6b26508b5568d2473f6d8d41e7b2f7d960e2baabc4e14d2b73626b0f2. 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/HKG731647622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0d75f0bb6e4d16844539d7fda6e18a99371c404a16248f4d8da1f6835b6526. 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/HKG731662648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9e306b9dd7112b0a2d7166b9a9851a9ca018eefdbfb6b7d4f1200db8adc573. 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/HKG731661422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8541ef15fb3faee7d8d962d61c7175d1ee249a488f7d2097d775c9029d200715. 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/HKG731669543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef9d0ebffdf4271da9a4691beb545eecad78be30b4c1b82165180e7820c6f85. 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/HKG731669447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a90792a9aae5d210d25d3c444446c7ee4b7b654a77f13a15272c7922296315. 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/HKG731612481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c30f8e5f60e19f418244b70ac22e15d7c1c3f3def8137a26428383ada47bacc. 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/HKG731612482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa937e0810a204b2b9f9b5eafcd78955559b75c5818c93727e7381aebc628a3cf. 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/HKG731604332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf633751f3ad5f337c7ee25103ffa7ebda80e7832649d8da23b93dcf5639204. 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/HKG731604328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514cd1bf43c6f5a210a42bb2dc6612a6bbc873e5bde06c1c555fee5b0d232c7f. 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/HKG731663207.