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 0x651929e5bbd68ba2146920d9d4c04148c4436ac5d811cf4313697a2e93e9a728. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2bc3f41-c480-467c-9985-1f5900b7a825.json and https://artists.proofprofile.net/proofs/artist/c2bc3f41-c480-467c-9985-1f5900b7a825.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 0x70a3c068510d046a3195d7efef2067353a55f08023f09801133d61731649d100. 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/USRZR1447801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824972463b816a342de30468b885057c2775f70a2ab3ae844bcf9df9cc94d1ab. 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/USRZR1447802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bb936fc308e9512a9db7af3af1ea110ff5f4e4aa9afa7ba5e2e1c880b7cf4e. 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/USRZR1447803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f058f2995abad555b1779e921f04ed47ffe9da5099af4faa703364d99da0b0b. 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/USRZR1447804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac637d531c0244bc8d7c9d4f583c8300a8b30217558a2ff8dd24515d5847bd3f. 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/USRZR1447805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523034415ba85316725f678391c29cb40b27a0e45a076e0b57865aeded63e421. 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/USRZR1447806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52656b615af716576f1473db579d88ff68d0c171a43ccf979d5b5d1c9bac4fd4. 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/USRZR1447807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8f0b5725985c28c7e8f8d3cbd3323f249f8cd766678e3e9ac8a40f09270d3a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USRZR1447808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20e312bb8f7a7ad8c8d124e1db9126542f8946cb553303ec9f56ea1880329ca. 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/USRZR1447810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6393ce96cc4db6814af8531ba3dce9d7d54ec1761da49bb63dc0ff4ebf0841. 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/USRZR1233201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56df735499754be75303170332e199b4106e717b387985b0c375feae6f6af7d1. 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/USRZR1233202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4432abc497465a8028bdd386e1d70c6216e7e680b3c1574415d30beeb5b488. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRZR1233203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc940efe50166e297f731c8fe6b72c0b2cbf5449af5aa81bdaf096376db4a9d7a. 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/USRZR1233204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b9cd9e268a1e4976b0ee7c3aee3e30425cc45ec59bdf849b9eb7360f162122. 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/USRZR1233205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebee6a950755070a1ff073afbd2719398c79b3bcbd3c1e9fc0acfa1551894a6. 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/USRZR1233206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efb52cc32c86f7d8864b75a0e16ccf3f204971808828e2403de554a027c53c7. 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/USRZR1233207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194618a17c086d48e5d541984edfc7544dd2752f52de1b185c5bcd6f4f9b3f1. 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/USRZR1233208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f7717878a40181bf323ba0e9b8b73049f6f0069c4e250a86638c95be764a76. 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/USRZR1233209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5544e1fced4ce2e5db7dc6b6ca8b2972e3ea6b5c96f81239b6fec0c283084e. 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/USRZR1233210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff6124be241347e1db975f0b526c21d287034eace02b90b15d6bb6a42aab015. 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/TCAAR1025581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107f413db2a531335a23e27c6efe05ec28bd9ebf9a822f8ec1b621138474e943. 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/TCAAR1025582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85610e608a023d8082b6b3468aa56e47b1a292dfb9e90871040777171b6ebf9. 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/TCAAR1025583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f65643fef9fb0bd9c843957e7fab5ed716120ee52ca5cee00e2e87c7242e569. 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/TCAAR1025585.