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 0xcfeb2693b4b50e64758739d1af61662c7b38afe5bf38a5bb8760c8fe670cfb0a. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb48ce92-6131-4163-b6cf-0ef841bd0eb4.json and https://artists.proofprofile.net/proofs/artist/eb48ce92-6131-4163-b6cf-0ef841bd0eb4.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 0x377053d7a9e53a2cf639cd1679a551351150ceb8d08416c4e0afade631a76aaf. 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/HKD049501116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6062434823cb2a24c8976651b1599895e6974d8ad9318f11045df8e7e8c3ae2. 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/HKD049801336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2137550a4cd9f5d07957bb99b1658789ba9a4871911da44d1e3063e79889659f. 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/HKD049501117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331321d2a2b382143d70fd5ca3b519b685c2923bbec87839e0b7cc7adcde88fd. 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/HKD049801337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a88528ed0cb2f62b18defa275281a8d0acf4c2ce0da00c3e207e9692f29cac. 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/HKD049501119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a59e6c6cdd43e0d1b0d423cf2e091dae35c4c9f26001d1b37945a58098b187. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/HKD049801340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdc96c98bc0577bfb43e4e975a272db99a7a18814ef713488350c0342077827. 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/HKD049501121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5dd9c9e163c3d2fd4ca5f181aa90151586f54b39509e96ab5a0f4064b38e4f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/HKD049501122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f4c3b6f120900da03eda7015a3f1e004c07d8e134d6dff87a66d44e80d6708. 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/HKD049501124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9c2af866d1a7a0098df3ab9f05b858a3d8b2bcfda6de9e09f0a8a78780fac8. 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/HKD049501125.
來自上海交響樂團的一堂音樂黨課
《朱踐耳交響曲全集 第一、第二、第三交響曲》
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4206bc117ce045e9358de9e11f37ae7780043542bd4bc476456e94b89c5431e. 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/TWB879501201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d954d79477d8d8895ff05964e510ef73cea16e795664319c4b33e9a710d9cb1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TWB879501202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b600d6d8e2986adcf9dbdb7371fb949a205210d48cdc18828498aa8c9d1209e. 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/TWB879501203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f7bcc29bbecc8b414e7e77e803fd9fd6223c643cf36a64df4fd252b11054c8. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/TWB879501204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb880ec89f3e5d3eb82e5df7bc24a756c9eaecc13b81e09ee40754a661a02b27c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TWB879501205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecb5a0b4f073194947fb8953b05ee92d4c30cd2067781f3cf22ea6677799159. 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/TWB879501206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9306daa17821b40f9bf02d8d0961c044851ef03b16641dd599423a2146af37. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/TWB879501207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc7fa8ccfabe714e7fed77b0c1f465431633034e08464475774ceb8d29af759. 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/TWB879501208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8781f1a80cd81366b0632abc6379bd7440e977ea31452d930a856442f4fda6. 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/TWB879501209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9f9660e6db22f1d5104f3409badff72d8a6a503f9492d37ebe184e9156b39. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TWB879501210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1861bc483df334df3ac840b898f48d15a6f4972d7ada130d7b5002989018561e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TWB879501211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59a4d7a3ccd7ec9d1e390d7434ff217901e71b25200cd05b266a30bba398c94. 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/TWB870007701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284c618c535165d121172841e4ee84b65a37e20e6ac75d0eeaebea939b192d99. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TWB870007702.