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 0xbcec85bc0cb1ef904bb846a22cc0cc70845cd35d89db9ce6434007345906b5b3. 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/3c6045fc-f37f-4be3-a2e0-ae1284888b89.json and https://artists.proofprofile.net/proofs/artist/3c6045fc-f37f-4be3-a2e0-ae1284888b89.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 0x12f42b73023fbe858193a5854094850e275ccb32e827af728b44d5dbdb612ed5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/TCAFP2138920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f18f6ce3743af109fb899fdcc83e646b41474facd6a67e6df5dc41ad91f8a5. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:36:26Z), 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/TCAFP2138921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb92e5611ab6c88bc9b521eca19f6a3ed25bd3b5eade054ccf3e49c035e27012. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:18:37Z), 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/TCAFP2138925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715e33a814075dd8a96a67f169e130a4256d3b1668f96caf40e2647cc497d987. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAFP2138934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcfc9490d5b6f258c63b44f594c7f8fe6b4f3dbca2ba328f11451942159ac65. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:55:41Z), 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/TCAFP2139009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11de094c95289844c2e7023053c9bc1b6173e896d026da5ab6a655bdce3212e4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBMA22112139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0073efbbb6c35e8f33662a2ded48cfecdf1d1e6a301d6e6bf1bec2de5e49939. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:28:50Z), 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/GBMA22112141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8302fd1e401fe35ea18ff3a72ac4f7d37e3db6aed61fe1c408b02d11884f15. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/UKXN22209037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf58678a7ccc83de842aa5707cf0fab5926f0e783b89521efb214fb1261a07f. 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/UKXN22209038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344b892257805081fbdc722316da4d8d0e1e37bfda9d6b7cd54ea24e0ec59ec0. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/UKXN22209039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3029a6c5597d32c1e5aabbe17beec381f59533b7a0efbf37f67f9c25facf9837. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/UKXN22209040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ee060cbc04b3eed4224a96b1c6cc6dee5f874f96cbf01f67a7b2d9116b1b94. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:16:06Z), 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/UKXN22209041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b03d5b4a03017ae1ffa210f4d3072b5efa7968ae59c41e4534d64887e9d12c6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/UKXN22209042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034b05f0610bdce221339dfe12b7c02e6aa4b33af142277563eb77562134da39. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKXN22209043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f456148bb749e84a208552d6e249c3588c2b199d49e8503e1fe9f51c61487a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKXN22209044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1991826ebbf2c7629573d409866613fcf5fb782946e705be381730bef19f142e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKXN22209045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83550ff7c8f33fbb4882a75857940fa49e413d1ba343090dbfe2277e82e7ec5b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKXN22209046.