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 0x85344579893302853693b1710da1fe72844203a411186447ccab848b259ccd6c. 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/2e865ec0-002a-474f-9e5b-674d131d5be0.json and https://artists.proofprofile.net/proofs/artist/2e865ec0-002a-474f-9e5b-674d131d5be0.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 0x3f564f718423d917f9150da6d6b4c47b2a196cb9c5f8ff3dd304adc2812d2489. 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/USRMX2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf697b96969e55f29febbc996032e27fb4a270643c3c037447ca40dcc4a63c0ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:32:51Z), 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/USRMX2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe96bbb2914e5cfcca301073d2a643f7e52d07561d18e45887ae069e1ebc279. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USRMX2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb9b4aaba703bf717ec7c8740b2fcca3d67808ad44bcd6dd3334ebf9ed1730a. 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/USRMX2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265972d303095ef65e192ce5ed414f86f3a30c0bf2922a05e60b77b035a51a55. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:36:29Z), 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/USRMX2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636d138af92ab8aadf4e3108d558e68130d008cf010684e57011f575a39cb509. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:45:32Z), 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/USRMX2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efc83609bbdd47eb7976a4dd4714c562798ce871439080c64534416c7ab6b5e. 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/USRMX2000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dcab1bc7aad1e27695dd26b1997446e730a86b7cf50ce4fdbba430f0b0cb50. 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/USRMX2000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf964b308945eff9550498cbf94367155ffa1d27b71204e6a14b929b2e1cdd4fd. 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/USRMX2000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9b158a1bb4db4301f5f0a560e0a8e5c55b7d3bf36ad6d95b49830d6efe1025. 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/USRMX2000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d8e588b6f2699679543d5aadc50f771c6750540728f05b74745e0f21f12b48. 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/USRMX2000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51c58244d4f3a7b51f843c9389e888ae641885a27a912b5f07c6c9552c33b9c. 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/USRMX2000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ca285344c1a8ab9fd0104b4815b18a2a158faabadac0df613d247ac0a7bc39. 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/USRMX2000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa547a2d0ce8d2e1260bf49539365696548b00fbd6bbdf0ead63b83727f323886. 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/ITP641600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaf12b416e9cf3f2a464353b8dfabdb6a03c6c9fb8ffd0839788f2d47aeabea. 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/ITP641600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fded70fc86adece8a83fffd28772509ff8a0d71e8bd25ec7d831ef4bbf8ff8. 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/ITP641600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c0f7419747052b8cb4c279d3517d5b8dc3915cfd16c3f71fe46e4a70297bd2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITP641600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64749e57eeccfa45d78a594a0163ad9938c42f957474c6d7493c8afd7a635082. 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/ITP641600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec4271ade8f45843903298e3653e99ea78f2e08f3181e80159ae493e261ff31. 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/ITP641600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ac61688416e17fbfa7988dd19abea92367fb92468f7952973ac98df9dc5ac9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITP641600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7a58924e0fca5be25a296d729e3586a0176b09a6ad7cf0fc56aa0c231942fe. 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/ITP641600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb9b4aaba703bf717ec7c8740b2fcca3d67808ad44bcd6dd3334ebf9ed1730a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USRMX2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1535b0838dc5550430bd9bb6c22bd67155e4eeb2bc1575be447477d451d2ddd3. 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/UKL261800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dcab1bc7aad1e27695dd26b1997446e730a86b7cf50ce4fdbba430f0b0cb50. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USRMX2000083.