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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af0d5075aea87e6174f5a9c310eaecb60043e1e53c5555502dc192d4bca3aa. 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/cc99f518-c02c-4648-9d26-63ca9ff9fffa.json and https://artists.proofprofile.net/proofs/artist/cc99f518-c02c-4648-9d26-63ca9ff9fffa.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db8388a93c79527ec9959acb19d926b8c21c5efc1a4fd2a1c1c136694599475. 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/FR96X2029968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673c2bc8e98e6c4fa42a91222f0a56607f77b2d46d7449c9e3b6f3fcf2af1561. 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/HKG732271187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce230020e41a7b1c02576095539a70b5b93f6b913529d569008ffb23c333565. 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/HKG732271189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aedbb65061d93a72b6320bd37959ccb68fd25ae3e4f9f07dcc1b6460b5d4261. 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/HKG732271194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8634164e56355f0ca71df3282795ca587b3a5b6ebd5d90eb86b08262e1c287. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HKG732271186.
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 0xc732edb76216053016d75355f812ef7204349355b2146a73db65ddfc6f66a550. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/HKG732271188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372fd0d033a8a785a0894d11d73bbf65a039671cf0366f882da891f5873b38be. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/HKG732271190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f9fc53bc1e934dfccb620df4e3626d8d6ec9430890a4986af4a0cb359f5323. 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/HKG732271192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9a2199ae5d1ad0f43e11dc5b111c3b4ba63f27fae41d116bab7a5f0e681fd4. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/HKG732271193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad71cd4f5e2ec58a2b29827be39611f3dccfbcf26dfbc8f23ec1633a8e7b5dd8. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/HKG732271197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea3114f9c2cc18a1dc2f718c1acd2e6be8b3fbc4ffda001b5688ed1beab757c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732271201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91076862b6433ecdee18ee0379967aebbc1f4cc97ef91c7effc28734cf02b6e1. 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/HKG732271206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0199a42f3026d83926703ea0dc5f01662d2eeb7d8bbde868cd7f3cd66cf631ec. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/HKG732271204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21549453eb4d39806aee874787be7d9350f47a483d23203fbbcfc97af9ccf5f1. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/HKG732271207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0fa87f8bdca4d1599bd0625012101cdb12ba3d48b7b93a34089c95bf3150d9. 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/HKG732271208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56b8298429aa1d6305eddc2a7ddefb37f49c6c6195d506afa01e089878f5463. 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/HKG732271210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0873f4771faab74c961b4863681164a2384f80d7f41fc2b5c8a94b7c84f225ed. 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/HKG732271227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7b0aa2d5d06d81bc4e6247ef28a0bf1db18fa083d78769f6bf46d3b6d63a52. 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/HKG732271226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf90d0b53f154072ccdc93bbe2d3ef7eb628d2edbe7689b0f656a85fe0b9112. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/HKG732271233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495f55cba6b47d04a61bb678851e3a8eb213447af30c78b8716aa2406dd1f2f3. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/HKG732271237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc596035a51489e311ccc55e5f8437ece834efb1fc1302aaf04cd130ebad612a. 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/HKG732271213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7988d9f255a1f66f381212b88c422be662da29f288fb2207d0841ca80425d21c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732271218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9edfd312a998b31d4644e4a8e1ffb4604ff68aa9ae4997c247f6c2aaec38d5. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HKG732271214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494b0e1ff3420c3421583dbf26b7ee1f95c92cccf6fc3a6f31a7d1884e380275. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/HKG732271215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296011dc451e3dd990f04ce9156cb0eefa8d722f73504d8e445bdf2322457cd1. 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/HKG732271216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcc57b2d1e8a557301a8979e1bf29d0cab1119590e407f37dfc67de268686ed. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HKG732271219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe556776fb7e44834b11ee1e51bc6c9fbd9d0a8f098e93116f7bfe774f8c9315c. 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/HKG732271165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf8a9f156b8cca1b0f65f7904959b47bb34600a7503c4a6b4d336990459bfaf. 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/HKG732271161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03f815d78c148d51531e6fa7c256b050a9244b3dda7335ad54bdf0ed621f4d7. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/HKG732271162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a73227acabeab99df236761ddee9114efc97d5a12fac98c92e2b947cc111afb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HKG732271163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe38acdf281ddf05e78b89b7e9749a8b0343923bec44b1fbf6894761bfd18299. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/HKG732271166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14080ef2adf4d4b02108e4609a407822f9ef9f4ab5ed65aec6b10664564a7d6. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/HKG732271168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b8c19dcc2cac4a7d9797be9d13b96ffc6ca016a4cc858b22bc4126ee01ac3a. 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/HKG732261804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f8b277dfbd9452e1f60d712088feea6cba871d30d972d4e37896a9c1bf337b. 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/HKG732261805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fe320edd3e8a4a5522259dde4d398d81cc8967f3beb969c0915209b100a465. 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/HKK972239519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70348d1019954a8f1c522c9caa6d6722056db0b2067d6128560b955a3848e5e9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKK972239480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf793452a593f6f27c2685b865a9dd9dc80bcd41db7f0f342476523163272197e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG732124893.
浮梦逍遥（仙剑奇侠传《逍遥游》卡牌游戏主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad20193a905927ca52feff1672381fa1add73109fe4a56492e3c3b8a8b7b5c2c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKG732271244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93f0c9f82347712e193e93a9e2b26478c09c88ee28ef8eff872e73b9811e1e6. 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/HKG732271246.
三世缘（《红楼梦：林黛玉与北静王》主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cafc5f0ea6d8b8d50c83bc44c2f6a667ff8281bb9c98ec5a65e3291ad4c1f9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG731406000.