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 0x9d4e59ae6244f26d85bc7d091323240ecc30a3148a67ec0d36e3d0bafd82cc75. 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/256270b4-2d9b-456c-a954-6bf063ff28cb.json and https://artists.proofprofile.net/proofs/artist/256270b4-2d9b-456c-a954-6bf063ff28cb.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 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 0x95437227305978f14237260033f27b5fb51ee23f6a83a1fcf3ea9c476cadcf0e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZZ772447718.
从此后不再挽留 (收下吧我最后的问候)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d63c34504bd9b18e686601250dada7d18a62bb149472c0c0016070c66a08c0. 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/QZTBE2457945.
无法重来的人生 (我也希望活得安稳)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18f2046310ad848e5b8bc49885a78bffc928b931aa69533646dc86d0e1e07b5. 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/QZTBD2476257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf3e5aaf750201e1fd482729d986cf658a42be59124bbbc74a62dbe63737daf. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZTBC2490206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcf247226f9485a4d42075682c0823377ee62a72eac9ff50507a013140db696. 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/QZTBC2490956.
当一天和尚撞一天钟 (做一天牛马发一天疯)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a355bca86ae777594c4a23c1a8cfcbb5f609fb9b2b504941b335833d0b825eb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZTBA2499281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fcd94c18fd4600eaac8fba9f902e7dd7e8398e65aa083bf5473963faa20312. 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/QZTBA2463061.
思念难捱如晚风侵袭 (海岸上搁浅的记忆)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892595f2f9094287657d7e5b666a908585ec066a383b1daf168b1e688df6126c. 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/QZTBA2459720.
转身即心痛 (怎么转身又是一阵心痛)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0de9c94b35331ab8d83c855c9c3a60029a96e4e8177132f03ebcbcbdc5baab. 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/QZTB82463003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0096a42d2793de2c7a472be03545bb0286b07af3f28df6f95ad49a8f5a113d0d. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZTB82421445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b325181286619590de321222a8f51a7e2ab742b4f5e78df7f1efa668c8cab6c. 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/QZTB72455773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53b8e5cba76277b92ad76064b35c716c7bed13648a22655ef2cc75738d7fe0e. 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/QZTB62444596.
云要散了何必再追 (人要走了何必挽回)
南来北往的风 (你的爱是南来北往的风)
我知道你最近很累 (是看不见说不出的疲惫)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d44f87af8705681dfba96f2d47935c4a030e229fb2045956bca50b899e38230. 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/QZTAZ2446239.
这世界我来过 (开最灿烂的花 燃最耀眼的火)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140487a26ee916e50948282d2667c4ba5c84306796733c01007fd1bc208d1094. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZTAZ2402484.
激情拼搏奥运会 为中国队打气喝彩
你答应我的事件件没着落 (我注定失去你炙热)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ab581347d4dfe285b956826de7844b2d7d859d4a0965ec9ae36c6b86f3beb3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZTAX2483619.