1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x365c73e8da2ce70bbc290cf36a525ca88aefc107f3c6e090ee1e0c46c9b02d23. 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/75d33097-f9b0-4ce4-93b1-4c431364382f.json and https://artists.proofprofile.net/proofs/artist/75d33097-f9b0-4ce4-93b1-4c431364382f.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 → block OTSBitcoinBlock must exist at that height 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 0xa1c5ff6095087f3bc87e0b574c0711bdbc7c8e2bf23dd41f8dc0c808a2a2bb92. 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/QZNJY2405527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f805b0836a4d1057a0ea5f9b2d37b2771657aaf4a85eb2eea1bb4c1dbe1e127. 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/QZNJW2347116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dc100ada069c396479c2af695ca84c0e0e31fece4d4624fdb3f10be8d9af5a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJW2347118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368a6914f9222c9c91cc95e3436cac4f9534baef963b1f0237d564b490a0d864. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNJW2347119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6790f13b6e094b5103ad8b7722a139b0758bf0105522ac45b12d11d140910284. 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/QZGLS2103955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bbd7ae5fe8ac0e3d36c588d0075446ec87fc355975e046fd1553586fc5e807. 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/QZNJW2012041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5caad6290568db1e8188138479092c93231d71f2ea3bd307bd92763b0f5e9f8. 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/QZNJW2442842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db21dd0f36de8bc9c8164825c48594f6fe0eec2725b4bb07a9a921af4083453. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZW9M2307302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d717f197828e6021c7945078801e67b2d971e271646b32bcc9e28c03989476c. 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/QZW9L2364058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dad22f1a191078d0df1a9e1cacb17ce6839e596addf833cc30520ac65ea4cf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTPX2349459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7bbb4e6f56037a0cd4c200205492a23fc3a471cd48de446f7b97fc1ae7a3a4. 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/QZNJY2337566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a05416cb6c8ffaeee12ee8a7b8d235f49a192b9c267510dd2910bf03082704. 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/QZNJZ2355757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c0ca7b519c1091ea0d6f5378497c80b4dd7892cfbf54bc67bfee8c6bcda44a. 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/QZNJY2337379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bee4f25564a8082f429e0f4ac8332b5d60666689cd4ca2dfb64f07fe2e62bf. 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/QZNJW2359130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc834ddddbc8e9ffeff5844820bd1cdd97c0b7f0aa8e0c9095c78552a12183380. 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/QZNJZ2223420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768bd9f4bd5a092dce60772d2a7fc35b522bd2c20658da6ae3133957508eb3b3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZW9K2252195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8102a565a866f0563883469083c230a2fcaf0d4c0b1db9f7d4cfb58405c905c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJZ2223513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe0d4af762b00fd7f59864595ff384d02820e2c01ae386ac5b8008661acfb79. 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/QZNJX2203601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204aa21f3739c23adaf01ccc7356a8877d7f7bc36231e4c4f958e86eab3850d1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNJY2134510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2b4f39f8702c439b8d1087ac2875ee98adebfab5f1362cfa35b6efae12be2b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMZ92192775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd171a9c7929e0b0b9f6f69704c3aec1878226eb7e438239908b6de5f1b387b27. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJY2047644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93eec298f5dbfe0fcc515080ae3322f8080ad89ae6f77c32716f9583da4d8a. 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/QZNJV2093322.