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 0x6544f6fab19b444bb6bab8b54df6c288645c37bed8a03691bf445ba53f6834f0. 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/4191aa4b-8d10-4996-afea-1123193b50b0.json and https://artists.proofprofile.net/proofs/artist/4191aa4b-8d10-4996-afea-1123193b50b0.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 0x31fdaedf1db0847e08a729deab25708b6ba0822f7e601b83c9de49727a971280. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ITDXG2105301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae58e170d95bf850f8253fbc27bae2da7e7a1f63464487170c9e475aff1d7ece. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ITDXG2105601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee641846c3bf1fbdd0bf9ad1ab032ff4556b52bc6f6c4b2e16c5d48f774a3ff7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITDXG2105701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdff2a9ac66e65235bb8d97a18ceb3553341348fe64bdf7ee60c7b05b1be5a65. 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/ITDXG2105801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac42d3d2a25eb022f970e96671d8a9035a7e4feb449fd5ea30f676105052c88. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:06:15Z), 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/ITDXG2106101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea0353ffcc8b77339f464532d1b794e1909f536694e9b4a34c03e907e1ac6c9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG2201501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237d1c34dc7290ea3aeb7c92466ae4ccd88891fba7658b707e64b8364ff85f28. 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/ITDXG2201601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fb86c20f670abcfffba06b070fca7413a7c5f9bc6be7e46c035b087733c4f2. 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/ITDXG2201901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2883e365d6392a71abe710f7ea3142cf6a0c41b6efaafeac958180d6a72b35a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG2202101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218a56926350a454dd05f82f24b4d309a0d626201a950de44fbb92627f2ab9d9. 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/ITDXG2202401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35db18d924841f3d1faba17882820eedcbd84ff46f248c527ceaa6760837d20. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG2203001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0446ead514366acd477c7d6cb0c1a59acf2c4996d46883e4db4172cae79e4358. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG1912501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc924950cb8e1d0e5c9a77317ac0bb69157cb6b5d20a2cee431939b1cf462bd0. 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/ITDXG1912701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1af3d58d9c2d877c84acf161f212091542789587d7f6e348703743726ed9b5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITDXG1912901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adf2ae3f905965d8c6985ca1d4ceddaa8de4ba396d6fb47b5b31e681a0bbc20. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ITDXG1913001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb457f6eed721334bfe7e6353995735c40c6eea32e878c3409e33dc789a7459cd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ITDXG1913301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13e27b5471ca10bb358682776a1093fb7f82b2c826469e6736474bac6186af2. 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/ITDXG2200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f6be71a5cd2c8091505678363c96f0b8ca86e9b1e5a3d909bc60d7960e0877. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG2200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71230af61e3f3245917e499754868fe0caa3e1f7b1afeda74f542ac87b607a77. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG2201401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4a77e883776c0493e3c175d379c018b9722dc0e957bfdf799d127fc2265dd9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITDXG1906301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2458fdbe14cffe2c60a007c9438364117068a2d2c05719d5aa364aef3b6ffd. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ITDXG1906401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60862edf105b6c1492852b9097d1a22875b4af8c6f6f4df5a22d36ae0069b469. 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/ITDXG1906501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40d10c406ee242dae44dc9ac763697fa79625b2eb2a8c7114f07481c7221716. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ITDXG1906601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209c26ea28649cf85b020d91020dde25977fe16c05c190630e0e1221a701d058. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:02:45Z), 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/ITDXG1906901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6294808f044f8a75195b0f2d4418b7ef5c8fff73cda3e03a8f4e90e393381d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ITDXG1907001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35248be26f9c2b6be46b9019a4dca89e9fccf6f85f8858a5007df5bbeb6be5d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ITDXG1907101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9d96e124d68d879c930294ad7a68fc5c44eb9e30fd7951974d33ded13c4e37. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ITDXG1907301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc161e4c2c7097ec3d13af3f515d6c7312e5fe8aaa397073a75f81a698c4306. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:22:02Z), 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/ITDXG1907401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d421c845c3d36c5b56168747c0afe0c218db6824a959139e024baafa3a936a. 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/ITDXG1907501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26a9f8ce51ce324e2e1266419de34545b64f1547ccb3a01289fbd8e883c1c45. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:19:25Z), 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/ITDXG1907601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d1355d47063f4e7341b739b327d8d915e83a0113911d20d17ab482ed59ee24. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITDXG1907701.