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 0xc1e7762a4dcaad3f1560b7cf3ce9c0024d3a6dcde62480cd785a4cca4b40c51f. 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/4efc0dd4-b04c-43d4-8f73-1d032c5db028.json and https://artists.proofprofile.net/proofs/artist/4efc0dd4-b04c-43d4-8f73-1d032c5db028.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 0x379f20c669135be82971c574af0e84820beeaa45fe1d97c6c4d686cacd51b7a8. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/HKG732127981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed73df0efaecee4bd1c416d91a783005cd1dfc60122e5f148157f5e663b6853. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HKG731723719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e53157deaf9d18fd903fae4f235c99acaeae4bfb63b6a9d632f6e95dba0872. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/HKG731723721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0de4d2939242610975a88e1370ec27feef780532b9255749ee409f2edf9e6e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/HKG731723726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950d3f233efef2ee8424c8b6c3304693be19e38c3dd92ffaa11ed8726975c7b4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HKG732001620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ba58a0f7bd241ddc4923badab68d67aa3e6e30f6c56268bb7e6af948c70859. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/HKG732243017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d2ea5f1c01eb38486b8eae57d7067666ad758bce4aba13f457980cbe64cd9f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HKG732127960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d6a473712826aa16a2cf65385f6bf0bb1e595067d597754b76fee513e1750b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:23:01Z), 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/HKG732001860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd779d12a26ee050b3c692911ae40148871cbd9e5e1794bd9a67f95792cf5e5a0. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:20:11Z), 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/HKG732127978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8299543728074846a4b448571f303fd15e69d53cf73cd9b9b1d3446d33bcc5. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/HKG732127950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b3e60bf71e945b79aac77cd21b35820ccc40c31b62232cd3d6ef29ee48ad6f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:23:56Z), 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/HKG732127957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf469973ded55e074f97028d7cd13b1f9b19acf4a59fa776d7493672c0808cccd. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/HKG732017077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8581b003e4daa0b0c12e5f0d36a8c08da7d6fe9cbcc49d08c3b31ccea8641e3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HKG732127970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3353a826c12015b60dcee06717283a9beb2d000559b8c8eb2f1a715611206eb6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HKG732029234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e53a3fbc448b40c8d7a3f5d9ebb25843a11d2217eee8c7716c21a1292aee363. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/HKG732127986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780ffa00766d8ead944d3817019e7b50757e28b9804254bbd4c2aeace372e230. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/HKG732128215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c908d1dfa1183d742448dc1e93c49084bf63b73dc4c779c481b8318c10e5169. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HKG732128477.
现实总是和理想扯皮(电影《曾经相爱的我们》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a82d6ef276dfef636690ac4c31cdf73bb1f8cccedcb81ffc537af2973a24285. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FRX872234468.
在一座城等一个人 (电视剧《我的人间烟火》思念主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe91faee0ececf45acc933e005994621e495f0d20a931b4d48268370ca23767. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QZQAY2325702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ea2c98ee6ce52f2728d495cb67a510ecdc894f0471fe97d6b9cbfb7bba36ac. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:07:37Z), 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/QZS7J2386701.
雪龙腾（第十四届全国冬季运动会宣传曲暨闭幕式歌曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3d2bbd4a486bff2cc7ab63908226348149dbb0d1653b2cf24d54277df0dddc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKG731683070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca743332d951317b7fb59fcd06d74c769c2cfe19a0b82e70041737f36b2ade6a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/HKG732449245.
如果有一天我看不到你深情的眼睛
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9329f2440f604928450ca7b4225a7fc4f0c79e39e4826fb687e5399706929f50. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HKG732449231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8576210d184628094102941bdfe2f4d159a45c8e2da0a74dcae2fc817fe3a0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/HKG732449232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f3fd9882d6307cb303bb0c079675035dc523615a5619a48f3693cf02b996d0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HKG732449241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff86517845ceced6193de7aadd6b4cc72b957472b54830843db5634ebfe7c85. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/HKG732449243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9e1003b3606cc62e6a8cd4ce16c4b3cc0fbc8db111fef088a91a2652c3b948. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/HKG732449236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1266538827bcce88a88d9e69599cd5f300026ee1ecc0c447ce9fa208817be2f8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:51Z), 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/QZHN72571471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed379e416aefe8653f8a08224820703e6353155784a8b1d36d6d2ac678bcfd1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:54:49Z), 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/HKD012507814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb38120241363ae0ac8879543a6930f76e5c5721d7e4c14bdc8070e14660dc58. 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/HKG731679381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4197d1cc64d93e219e5a862ae5f710bec0b9ec7bcde5162a377d781c501935. 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/HKG731679380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a1a374e9f97afec7702d9f03baa0a30795ee0d064dc9180f16eb3c8c966977. 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/CNUM72400555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb38439eb462e121d223b450e945b9765798e88e4c5b3ed8ac4397b96358f668. 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/HKG731679374.
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