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 0xeb3b8bb64efc2eaf18395d5d4edab10e5b2f2474bdb46db44375326fa308fd3b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e906ead0-af91-4ed4-a684-045a60afd250.json and https://artists.proofprofile.net/proofs/artist/e906ead0-af91-4ed4-a684-045a60afd250.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 0xcf366cdcf39da9e5192883ee1de208f9b8f21de67b76b45f335cd65f9967ac13. 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/TWD950522103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afb77f5e723de15dbc7564e89ebe1be4df616ddf50a624786ddf3282f9ed0b5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TWD950522108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b74f1098826270c21fc6f6f1a5dc149556e7a01327a1a42c733b7e3e1d92e6. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:29:25Z), 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/TWD950522109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f927d97f675fd925d5b018f50ee74a35fa1f7f5f392eacc1d6e1a3cb90d5063. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TWD950722102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6ee47adc05964ffd15bd1ea83934dd781845c31419319c91d31a81c9f276fd. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:25:17Z), 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/TWD950722103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ffb48d1dd455e2bf4d6e22befb9cdb578c3e9b6b27cb9f57b544f417d0f13a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TWD950722107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe6f01752a47cdd8f07f78c61fa12bdcbfa7d2d99610f7b68618a3ce61928eb. 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/TWD950627104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18d600b317c72b62dae12de0809e7b6c555729c6afa1016c205405ca410ed5d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TWD950521108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f927d97f675fd925d5b018f50ee74a35fa1f7f5f392eacc1d6e1a3cb90d5063. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:11:17Z), 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/TWD950722102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80850197edfeb7fed78537a7518a6e1f758f8ad39ad8add98d55bf62b12115bd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:29Z), 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/TWD950722105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ffb48d1dd455e2bf4d6e22befb9cdb578c3e9b6b27cb9f57b544f417d0f13a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TWD950722107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe6f01752a47cdd8f07f78c61fa12bdcbfa7d2d99610f7b68618a3ce61928eb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TWD950627104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68137d5142388bfbd58a9c24d2cac632cefaeb3e90bcec774e725dc08ba2045. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TWD950922102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb06f991bbfe1f703aeaf20c0d93b3a86634c27f4b32821f31516481b4c4b1b6. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/TWD950922103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68137d5142388bfbd58a9c24d2cac632cefaeb3e90bcec774e725dc08ba2045. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TWD950922102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb06f991bbfe1f703aeaf20c0d93b3a86634c27f4b32821f31516481b4c4b1b6. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TWD950922103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1e819fb0c34a6a98eee84db30d156efd16f628049040aa610c2a1b95cbe05e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TWU711803743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b5a2488c5ccf2a0092680300f36bedaceafb7a9331f7c559b277723a9916af. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:39:38Z), 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/TWU711803745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c9dd1e93ae3d331607d18c7088e3e24874a13fd89da5574147f70ce8eddf79. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TWU711803747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb9b242579f8ac864d0fb362af127aac40732df9ef2f0d116e944282856c10a. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/TWU711803748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06088da035a877b100205c8f4bf0635d3db1a4259f0789f016e4b3a8e5bfa11. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TWU712004173.
寫給明天的情書 (《愛的奧特萊斯》感動宣傳曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f206ece0d462d3409fbe4cb5bf408db6efec9a123edd690a573be32e04b3847. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:41:06Z), 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/TWU712102328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396ee294b054929c0c500246a0c46f740cd488a9e7b23b4b402a8c71a4ea2fd5. 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/TWU712104499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bc701943151396215c92f65a00371f096b7f22053f8f129a820af2643e5e78. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HKG732149363.
奇蹟之戰 (遊戲《奇蹟MU: 經典之戰》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04425b503a6d30a62ceb74feb79ce3b1e97169537a1400cf0350327a166634a5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR96X2296481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a9d9ee7740d3c83b2d244c2cddb91bd0ac19090c4516142e12f7d3da1fe613. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DGA062201462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb349eceedcb899fd32ebe83a19d60076d28ffd677dc18d78f33fd79d0d63c4a2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0P2351463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ec1e717cf4604652ce8593a89034c7719771731a86d3d635348919f0402555. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DGA062455053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511d7a347ca953ddd07be56c79f4e4f2c783fda83b27ccf6daef708332c86de9. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DGA082441215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0948b3b01352c864f1e4a1165faf7e24d1fe67a14b88bd390add21542d197f10. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DGA072486740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0948b3b01352c864f1e4a1165faf7e24d1fe67a14b88bd390add21542d197f10. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DGA072486740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e13b94e17d732ce5aeb36284ffd8b2c8f72bc422f7e751cc4fb7e956c82843. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DGA082441209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d37f1ab4294312491dd4f1813d5b9760f8c670224e9fac21744f90f3fada762. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:39Z), 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/DGA082441210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cd0f9a9f33d933d812a835f24dcd8d4711e9985d2c9b27564a406864b70938. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/DGA082441211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9102c8ded1a5bd1c308d2e8f6e8656469bea2e9ed610b8bdd935e3c46b8d7b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA082441212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf046fb87729106bcdff901f6f91ed68fd5bf35bd52175651d4dd2ec1c5bb5643. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:20:42Z), 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/DGA082441213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0f0329820986db1e45bb0f6122a64b2a4614e43cfcf070128a2cdc04987594. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:34:02Z), 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/DGA082441214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075eda8facc59657b096053faf6ee5377077bf5f9f9779360b04a619dcb72d02. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DGA082441216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde33bf03d94e4a72fbd74b82d5d742f8f4f79b5fdaabe6316291e5ccbd1425eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWD951887103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9af79ed5d17ff4021fd82e83a1118793d6c065a97f6907334e36d2e58ba8407. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/TWD251856101.
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