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 0xf69a35d8b3620a82fb47b2ac9e657ae06a0ad0e30b1155fe02cda99ba7826f10. 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/2a3090f1-a610-4e0d-8088-cfb9f93f2d87.json and https://artists.proofprofile.net/proofs/artist/2a3090f1-a610-4e0d-8088-cfb9f93f2d87.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 0x630bdcb9e6be141e3a09823aa9e4d7b5f2f5834171ee694ae5cf364bb2b026e2. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/HKG732302375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037ece40290d51b9b39186151e22722c6cf68672e6f90aadcddd8dca32996325. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/HKG732302377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150b9735cf1fa0768a1ff452e8f544bf5fb41c04d49348e5de1e9bc2b16c1cca. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/HKG732302378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd14b53e33cdc3d674cc0d7c5a8d80c1535323d254dadfb71da2d69c4dd3b62. 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/HKG732302379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cc6f2532fb2d81238a853ffb1c0bb4d6cf9825eae15ff77d4886bc915bfe15. 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/HKG732286767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c2aced57edbbd837ccf3e6bda25518756ba8b6fc4c872c65d1d39bba39c95f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/HKG732286689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d36ce2faf2e0a0c7cfb7970cb1d410e3075e989f8c41b2593ec4e6cf6fbdde. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:54:39Z), 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/SGB172100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829f65ee31263ca262e91423998b2d6dad6bb30d58bb34399e976a71745cd281. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HKG732286306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5fefc1bbccb4883ec90a0571ab2a76ebc4adba405c5d947ad0bc775a8c4bfc. 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/HKI112110109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df7702ad033f40f2492f9584d2e8d763eb2a2aefbb0216a993c84137f75f821. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/HKI112111245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b29409b4609e195cbc19d3957a5b9b8fe870ff0fafec642d932912ff2f6b525. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/HKI112111246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f6a6dced3ba0635dbed9b1a5a55ab512d09506919fba0882ca8570095ba0d3. 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/HKI112111247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8a2d8dcfdeedc4a8cc84724ce2d56a24affcee62e3df38233b0a1bda31b9ff. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/HKG732251072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b4444a5ba052fc4be0c9eeba4f860458f218c33bc465e728105bc2725a9a3b. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/HKG732251073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b335df13f7adf8def39c42055cab42cc4bd5665e198f289f5f35e0b034f6910. 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/HKG732262319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b638615f28fe8d1194e8ce7b4f9ed2696aa08b9ea73c659d2772cf17e78194c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/HKG732376975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1ef47084874760e28d02461637ade2935337312612b5baf8dcef53edac85d4. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:03:32Z), 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/HKG732431843.
日光之城 - 影视剧《日光之城》追梦主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f003d013b75ae2ca5fc864e11ca29af8381673cb5cdc0519af20a86787e612. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QNSM12401304.
时间停止吧 - 《心跳源计划》电视剧插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b7724f3d7189efb89db662151758066e3a81dd94555ea94b737de8c2746fb2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CNZ632301574.