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 0xf459444b6467f40140af16fa64b66e387c58702e2f45db7813bdbeaab76c2e66. 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/e43d475d-525c-4a29-a6e3-1ce553392653.json and https://artists.proofprofile.net/proofs/artist/e43d475d-525c-4a29-a6e3-1ce553392653.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 0x5e105016d809d5dabfe2267dd0eaa68c4f44fdbe29da0b4137d4598ba5aa6729. 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/HKG731697924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6144c31619edc64308a23c8e40bbec75ef74bf94cf86b4d1cca69ab9985e0e3f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HKG731697932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855978e123ed8f46425e5cef673e9101b1acfc0faa3fbbba7083a18cb6f43eb2. 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/HKG731697933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8197d2cf8db1722c416ea1bff251b166dd57bab4ed91e74336160551005e74d9. 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/HKG732454165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1f986cd65f79e9775657a9a46c0ecb19d461173e7fc2c6dfab52a99dffe813. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKG732429416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b89c58c911ffd05aa1685ebfe5bcec18442878f386c36e285e004244b3d5b19. 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/HKG732434315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d7e06aff853c1d9203427ba7216949529caf32d4fa0e301bc74d55ddac75f1. 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/HKG731684618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ea70099b694cfade6c52b65c3c3fd8b3d9d6fdef093efdb3257dd13498a037. 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/HKG731661256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d66271935374b999c44392087446cc2ff4b90c3bbb8a3bc10de2792ed571775. 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/HKG732381652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab65cfbae00004d7e8246eff6f3d3abf4013e988518a12ac15d93a803e073573. 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/HKG732370313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc42c72aded2452def9a76f653a66d960f2bde61de0e053e646528af9b31702b. 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/HKG731647280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cbc4e630488a15ae77f824b9290197d0d8b45d23a5afa5ae5ad0f2f1360cff. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKG731672477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6abbdbe177b2a15be14b77d741f765c3b2473fe223db98a75274e43b9544afa. 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/QZJPM2488477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e360fe50141a5f0485f7253a55ce3fc086b50901f45772ce9b54ce8036b773d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZJPM2488481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0ca4d0c9bc634873f38835f8a3c4287b859ca196d2bff054db420cf9c1bddd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZJPM2488473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3d9f9004ae135c7ca798fc117e1157e85df9039bdd8d76bbd01aa7bbab36ff. 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/QZJPM2488475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44836ea0f8463c0634fe1c20c70d0999aece50a5fa91dae83c6f45113005486d. 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/QZJPM2488483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f76b0639eed796cc3b9913b91b67a76106943a0a934060cdcebf47977cdee3. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZJPM2488472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fd2bc06a4842a54737e4a236fabdc107f702d96ce6c31baba9ce57e7204402. 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/QZJPM2488476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453516bb2584ef271daa47a57145abbe88b445af70054873aad910299a8f9a54. 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/QZJPM2488474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb990847f0c5d9ad10f37254a3bb82c5b479f4d45b8d43c8e19744dfaac99e77. 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/QZJPM2488479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d5e4d8e861c1555906fad26975070aa53bc2c5e385c7d43e628d742741a9a5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZJPM2488484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076bead9bbc97aab77659de1f16f72cbf9d3c437a1183253ccc9d38a4189d55a. 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/QZJPM2488478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09f90838ef204c918d971c1b74440434445a327eb8dd9c139c346cafcad3165. 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/QZJPM2488480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293fb2e06c5700dad7e78eccc35eca80bd4ef82ff40935e891bb5ef06b9271b3. 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/QZJPM2488485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac013a2ce7a43f7b32e1987aa8a613ef3e805d22f86c4241b8bbe956876728d. 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/QZJPM2485091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a91a8f91e6ea446af44fd03c9f6b024f779796dee0b99b3960963517916c63b. 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/QZJPM2485100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4b24ff272c47adb1f024666c9c519494e7d4eb483bf3239ecccd0a474a8c24. 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/QZJPM2485101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fd93b95e974b2f9045939dbf75d20c6054eafaf8139ae9712a4f36b8b0c620. 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/QZJPM2485102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6325efff0d16d1f75ad98e64b650ce4df846ab801136f2cd6b1d851b15c90079. 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/SE5BU2533030.
茶花开了，该回家了 (《茶花开了》说唱版)
茶花开了，该回家了 - 《茶花开了》说唱版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187511ce542fab5a6be1ac5a4437093b55a4683be2ecc3f36c30ff5806ce011a. 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/FR10S2559107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf91ebf8b2d22de498e03a14d7e6049ddbaaa5ea21bbd0cac80f6c685cc8999. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/SE6SA2423902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2b407089b639531b609700b2e0a818d0014f1369639ab80109a606c9a4ccf6. 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/SE6SA2423903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d43e9867aaec8220c5b9be17b3c38dc3869898f3a66b85119a9d444464a33df. 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/SE6SA2423904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3215e9dc8748652bb62f335945a8373f2c5dc0f7da1e8c34bc92354febf0fc7e. 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/SE6SA2423905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98a4574d9edbfcf60ad723ad6e3e9cd7faf88d5a0f98ebc595f936516acc486. 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/SE6SA2423906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc771462ba99dd8d183311ecdd8f971dbd224712d03e7e6badfad94d3ecf246. 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/HKG732495349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4701662488bc4c0982e20321c5792c1c92fd72ed5f9ce4f79ca270cf5ae74bea. 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/HKG732495348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d11a0522368fb51d214cb5ebb9e261121cd1d8ca8d7c596191d4101b4fd41a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR10S2504319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8db0d3b44eced7db5ae665b16f7880446ea43cfe68a36967e32a3e91c24348. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/HKG732499262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97461667d48b17594b9ba687dd73391c626d07712d6c63b1a8adee7e586df52. 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/HKG732501250.