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 0x28ee0833a4135856a05056882f74b216232c004c023ee4f3c6f2e0bbf55348ed. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1385673-19ce-4328-b4a4-9ac812987032.json and https://artists.proofprofile.net/proofs/artist/b1385673-19ce-4328-b4a4-9ac812987032.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 0x998442fece982ca1d14c3437533c6ba2a312b1e9a09849916ab027968c2d3c51. 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/MYHY11600525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63ff2a52a008e26d92f52cf5ebaaeec9d95abd58db64fc33e9bc03d717adc2c. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/MYHY11600517.
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 0x207d3aef36042d76f0b1ace193f6971c200b6b00130cf26327a2f85bf661b42b. 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/MYHY11503295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce3e904c8e97cdcd16fa65c352c3d0a0bc328ddde2bd98ffc1fd44a2cd2f0b4. 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/MYHY11503299.
李采霞, Vol. 7: 藍色的信箋 / 真情卻難了 (修復版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557fa6a67ac77fce580324341187f12b0d2930aa0ba35d549a152e465d214c6c. 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/MYHY11500473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec0569c8c187b14db2b3da8737e10ad4952bc935a8d1c0de2db8ae92f0f96c5. 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/MYHY11504153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b10112043b09504fccae8fbe843f5177d437434ad74a359e237ba4b334001a. 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/MYHY11504161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffabd7f7b164dc104518566f946b2414551c78bfd2b7a595fbc844bba279f86. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/MYHY11504150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bfc277be3e1d200ed42644473e8cf36e9bf8ff3177333f9c4da8fa420961d0. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/MYHY11504151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87db6a30d7f1de5d13bd3b4c0c89d04c0a4464f7ea057d077811decbe6897b3. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/MYHY11504157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06599c28322a99b3a0da5a5311df0a1374798884641cd94a2c07d2ad54bfc298. 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/MYHY11504160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c502726027621f75dfdefc9456cd696cf6bdafb217c2ccd2544b90d4cbb080. 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/MYHY11504364.
李采霞, Vol. 14: 是你點燃愛的火 / 淘氣的女孩 (修復版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eace4bdcd7d00ee27a0fcd990778c881a544e89d44f5c6732d09703fb8535c5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:26:29Z), 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/MYHY11401650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1714d25204603aa6fef1191619a6cfab80a70cace570f82cba0bf26424f8bc. 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/MYHY11401658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55591987f276fd1dff64f873a6a8bbcbb228e1b16c4cea8f581562d0cfb772ec. 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/MYHY11401656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3c8bb02102cb489ee91bdf612f3d55a4b8b3b93de0127f15eaa4e37f7d6896. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/MYHY11401666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb452bac4b818a663eb0b584caf2c0406faa976daf12f88820bbfd9de9022b6. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/MYHY11401660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9544a2a46d94204620e55edbddbfec75ff55f4aa4871817500d71be8bb84a8. 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/MYHY11401654.