{"copyright_id":"0x996e7eb5ba9b9b7ed384088f68dc23a87dbdac654241e94609c0ee2bbbadcca6","name":"白紙扇（Hardcore Raver in Tears）","registered_at":"2026-06-21T14:24:56Z","symbol":"NIM1946126","token_address":"0xa646bf252fa40eb9f52e254218fbdbd2a67be2c9","type":"artist","uuid":"f3deb98e-c930-42cc-95af-92ad5b0a5c3c"}
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 0x996e7eb5ba9b9b7ed384088f68dc23a87dbdac654241e94609c0ee2bbbadcca6. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3deb98e-c930-42cc-95af-92ad5b0a5c3c.json and https://artists.proofprofile.net/proofs/artist/f3deb98e-c930-42cc-95af-92ad5b0a5c3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Problem of Leisure: A celebration of Andy Gill and Gang of Four
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 0x56026c2dcaf91c15fccc53cec8c052fe9398f21f426824b851590c2f4ff864d9. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CNZ512100395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3367fabb065d2d4c6d90b01d22c5941557d743ceb980a75e073b49b3190bb3. 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/CNZ512100393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c012e28f6d5827b824f32ab2e49029a4176d60146ba57f0b2c7d8a4d1a1db5. 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/CNZ512100392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f065f45e969c9df1746a61a029e37c7e574e01b4163c05a0ecad6d1303c376c. 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/CNZ512100398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c058acf73dec31337e5474b85355f6cf1b9983bbcb4feb6a11262c084215a75. 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/CNZ512100390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb279a96e5f808c5107ff918df49b4e2c89f6c90f0530ec8c8f9672034fb88e7. 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/CNZ511900282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fcde0b4e3d05dc74d93bf2b907f1ba4f11e95950140c8ac9f39373b75733e3. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/CNZ511900281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485205ef98f18d87c2d59fb9378bf8f2dacc267c3722d1b24fbe5024ebcf9df1. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/CNZ512100389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925975a76b1868bbc59728a72842d7ccc9f743055f48836c3da24898a7a3c5e4. 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/CNZ511900806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35633405c522a4270465788aea8ed3da2916b4bf7459cf0f3b66fad374f03b5a. 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/CNZ512100388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3fc86b87b8084d78fccee5becbb32d9d4044d6c7ff69f0cbadd2fa337382ec. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CNZ512000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a0827c0f604b0a0d1f8e00b3deb2f5724f0a25984702ceb03e0f2fe9ebe78c. 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/CNZ512000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fcde0b4e3d05dc74d93bf2b907f1ba4f11e95950140c8ac9f39373b75733e3. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/CNZ511900281.