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 0x8a428c3591e4d550a72ad3fb8a9002d2d8eb1fba8539acd9f98518f55812f5dd. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3adc9cdd-88e1-46dc-9d11-e13ab256a685.json and https://artists.proofprofile.net/proofs/artist/3adc9cdd-88e1-46dc-9d11-e13ab256a685.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 0x90babb06b6d1a2a94a3e1a3669afbfe83409536aec3f7e9bc6e8872184f2d54d. 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/TWDK51702001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1a3c2b8e81b5513dac2220ae101e8239c0dfecd737b449935225bb006ca10e. 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/TWDK51702002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72fabb207bd9f3af3b8656bcbb2954898cb3e5caf1f89d61195451eae22729d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TWDK51702003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd753ac117c593b83860519becc355b6a9827aafd5755b5fef6e4705d5ea95988. 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/TWDK51702004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5393b8d9f677be8e45fb1620a5edb5ec96ef4b052299b851bc1a1dd206ced18c. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/TWDK51702005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e974ffbc4d363efad9acc814d64c4793766381cb769061eb970723d9d4ff679. 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/TWDK51702006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf520eab4b71e3f4d86c1a3c142a92f18619250c04ce52253b8be59d8cf1511. 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/TWDK51702007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8308247fe07db2cc26bd73388c259e1f161eeb2d31a4ecd36354ba06d782f023. 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/TWDK51702008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace97e3e163d705133f90a7e91e1faaa0994aa6579c51c40c2f70600e1d82f7f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TWDK51702009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7902363b423b449c7bacb4e76ce3475392d7bce60feed8644dc2f4fa252556. 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/TWDK51702010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae71c3bfd5df0a70a96a0e8d9c7c0a13cc80b128c7073301e40a4ecb20eb8c4. 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/TWDK51702011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cec6420934cd9be83c58bb3d6c61635cefc8cf683558070defbabe9c56621dc. 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/TWDK51702012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b20a5fbf79e1ea552b67a534b244e690cfc8006fa90540c16156a43b2948d6. 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/TWDK51702020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95906d1165bf0e13b09de5589be059dbd1d84038a45019e9ff2a96a23ffa4ca1. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TWDK51702023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3d0494d833e5f088a564b209595437f6bba1f329d11d944ccb077e5a75e1b6. 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/TWDK51702024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd609ba9d29077e9e891897aee44dde8e73b930685df15edb2a61926e0da5a1b. 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/TWDK51702025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf001f9feda61404b50195f81ff3c9749ca9a1aa36fb1f712402465a152fb9f. 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/TWDK51702026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dfd7d5b049ba1d43daa98d0e1fb476d6e50d2836605ef2990eb16a9fb7de47. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TWDK51702027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb16c91f68d94c4a494c63b893cbb0677180f4e277ead7d424a1268913b5b19. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TWDK51702028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa652a19a2823eabbe59c4d6e0f2ae8b01491a1ab9f6687c0e3366adda25725. 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/TWU711602561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcff8b725e78c4eb60c22df1bb3ec8d30c68ef7a3cf498ce96d7a3917357cd9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TWU711602562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97931a6f706bb512a680b6c08f9ccb7ecad218672453b154950e16ff9ce91670. 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/TWU711602563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dab71c32c5b89e40ea0e3a08325bf876ff853470ad5401899df3f10dbd8d8e. 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/TWU711602564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13147806b66e8e07d11e834a5684917bd8b184804b00ccd17d245b329d0a582. 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/TWU711602565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6860152605cc33cc5954488fed33e34a16cae1228280eea43ac4c88d52e1fe67. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TWU711602566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d5f9f4e1169b48b860cee8ac8467d4cee3849e4962215f766095a23ba53b51. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/TWU711602568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fecf158b25995611913aaa90d84d2758bd15c1803202e42eadba208b811aa3. 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/TWU711602570.
總有幸福在等你 (電視劇《歡樂頌》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99aa80c9934eb3a05e5eaeddf33e5153d36cadf0538b8246c650f7ad129d7d7f. 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/TWU711602572.