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 0xd85f4a4e5396be5f4bdd22a6d235ed5c5100222a1957ebb38ff4c0696b3f7621. 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/8a9d38cd-fcbc-445e-8cb4-8c8f334c6d79.json and https://artists.proofprofile.net/proofs/artist/8a9d38cd-fcbc-445e-8cb4-8c8f334c6d79.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 0x03cfa5c2ea87b00b15fe72172f82bee6b39042fa1ea3b9f843c3e8e35760edbd. 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/HKG732433997.
《小绿和小蓝》第二季魔王篇 动画原声带
明日遥想 - 《小绿和小蓝》第二季魔王篇动画片头曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f39bd92294e4d9e391c4a67a127dda10ebef0840242a3fb10ce048a62033754. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DGA062334991.
底色 - 《小绿和小蓝》第二季魔王篇动画片尾曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf986bf0360d4df2a3a4dd725d2154cf72109464229b548b1a6244d64f12d588. 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/DGA062334992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b4b2db604f5075c881f8b3588cbb7767b59deab4efd70460be9ff8e3691e2f. 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/HKG732296776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c07fb367471f1e9759f8bb1360e555ffec4bd7cd9f6b43a693f18761e63edd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR59R2288331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf842a484e3840ea3386b192e77f5bab72405c3c60d4f684ea780249a6a885796. 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/JPPC02210045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ac9f83668930cf63c5dbf6589e04b4647d69bd73f4ab8fc308cf22e1ae69ce. 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/HKG731591390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e06cdb318cac797f0d46f4d5252fff027453799fb23b8bda0ed7b8578f4c9ef. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKG731592773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c9d2a323689fcd9f894609812cf1c667ca01aa5b93b4a002bd97afa215c98e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX282129989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2ab10bd5c73bfac9cc61fbf6f13ae2a24e3f8df1b6f7410adb039323501caa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX282129990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa648c80e179110e1780380d974f2812af2ed5352608ea40041665f6af7277a. 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/CNYX22104323.
妖精种植手册 动画原声大碟 妖精的旋律
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe522bb6b57e02a0a430f45629a7f965fccb9a06a51836b705f911f0dc107d5dc. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/HKG731592502.