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 0xe0834af1d74dd711c16684b34ec8c06645a46394317bd810b14c4c11cfc9e6cb. 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/3a1030be-d622-4aba-aa03-24c1682f27d5.json and https://artists.proofprofile.net/proofs/artist/3a1030be-d622-4aba-aa03-24c1682f27d5.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 0x41b5742f940b6c357882f8914fb905e787a21f261c6bf6b1225704c5f2d97555. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:42:32Z), 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/CA3SS0818005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbce70b4b3ba0ebfdb7abf2a64714f687e8caecd66a70c87833d5fc92607194. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/INM230900363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdeec578d1e05306d6ba8165c33d73845e177e7178ed587382510f7f9b8b902. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/INM230900365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5417eb120ea4fceef0b5b1f7991d8672999f652ca1db96c1ffe66fa2e95f1eb. 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/INM230900366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4eb13fea6c928cf7ff441f0bd1a4a41c7b7bfce40b4ac42f8b3f16166875c16. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:28:32Z), 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/INM230900369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20deb7e249c48ed4af81060d7f159e2facef76f31cf59b16c2d78d8611736019. 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/INM230900277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caff30cf6e38883a49a587abb288121f34d058ed1a9cf69a1f8e82e6e339c93. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:04Z), 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/INM431101328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026ba8fe2fd73c0e8d6b283d428c8702eb841d43a5528aab31b8241f9440679e. 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/INM431104142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2851a843a57c2a9a2f61ed7b66505639ec403f75d4b0871a9c699125587e27c. 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/INS7A1631209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a97dfbf0e949381d3527fd22d7907ca42ffea615b629e451dc5372c9e5e4358. 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/ING501803212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64486fdb5f7abc899bdca64588638763fbaf3bb877ace607eede24f2150a109e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UKJ8H2213769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a11c1cac0a04264416a164b0191c5675cc574331ef32e2a0d871eb37c55a84. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/IND712214835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975b2663e85556a8dd7a9a8f660ad2e59696cad2417c6f0aca7982d2475a8176. 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/INP1P2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bd360ebcb68a5ad2d583aa7e27fbcd151a4dae6199d72b36c0ed6667c90a26. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FR10S2580966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5643d2728c0a13c6ba1c32eccbf878a185a4a6142c532868b89229de3c8eef93. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:39Z), 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/TCAJP2596291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716753f7af6c76799617240d2c70b171280ca0596c2a43f4cdfd1a0ee8baef15. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GXHUT2593485.