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 0x90de7241308fe7a56f36b3713bd194a90ab2e429a38a7b8bb4713441b96ca090. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90626133-fd2c-4423-80ce-b8b3a7f61930.json and https://artists.proofprofile.net/proofs/artist/90626133-fd2c-4423-80ce-b8b3a7f61930.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 0x0038ea2970abf9273e32890e48a9e24f6fd51c6949a7e4b66a6b6761cab65188. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:37Z), 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/RSA222300790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31af9cc447a6fb1f995734fbcbd96e10852831106655441907f4321da6944512. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:56Z), 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/RSA222300791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f160060f08a37c33b4185b93d8b4ebbda8c978350c4d423eff7e0680b044a9c. 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/RSA222300793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55457d0e56e316a868c329a614bf7c35b4b0dc310335bc33fa64e68eb69248ee. 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/RSA222301559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6afad755cec626535aa06ca100177a460891637947aa4e32f114f0533e5058. 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/RSA222301560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500dee5004f4b45c9394c6353ec9151cef06d28d08a5a920e788af50db58a86d. 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/RSA222301563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde270c7582183b352fd01a16438b508b175ccf03352c52ffffdcc2f7d3df0532. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:27:54Z), 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/RSA181338891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49592fb0e7e27aa5f76fc2669ecf93252139adf9fe95fbf6f948ae28a5bcdf15. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:24:11Z), 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/RSA181338893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09578066feba5b912ba26a2b42b962dfc443f2feba58e07acd80a083fe8d79b7. 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/RSA222302233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8517a1281d700087affdd78cd38c5a58ce14babc4112cb6bc276f2da9b3e1d2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/RSA222302236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31ed1f069cd9ecfe1022ad01d9a82a0c015fb7a94256f7612e80ceb0beaeb7e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:41Z), 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/RSA221816489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b05c7af70842502791ef6f5a763ebcfb14c30da369a58decfeaf1106ae132b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/RSA181342566.