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 0xc117c48c1f493df1fb237afcf5c07d03bd063d4a1f7a7a17578948f5b67c425b. 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/c490275d-1e40-4d04-b4db-1b9bc83805cc.json and https://artists.proofprofile.net/proofs/artist/c490275d-1e40-4d04-b4db-1b9bc83805cc.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 0x3b2bfbb683acd4c56f880240cea87b2bd843b72da0efc4cff5f4680601d6bf78. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCACK1514954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfd339723f40f8bfb79b4dc5f4295555c22f5713bea2e920963ced2c2e78540. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCACK1515040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c17bf1e4d71f1b1df2c3be7e1407d66298bd5b38e75bf87213539b2d02d665f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCACK1515125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5118ac93b23a2ba60d7c449c77975fd21b8eed1f85c42646f029a15c6095a613. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IENSM1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61549844a7280fa831e12fe738f59eaa6275aadaf163a827e2e2e4aa3ce2d28f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/IENSM1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c96933380834e97d28f62125bf4ebd39a7c01b8b0e7e5508bdc02147b6c241. 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/IENSM1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068082fe9f3e92ab43dfcd1867aafeb8eebe5e9dcfd19e08af0f5afbb6d52805. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IENSM1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f360f92f077f84d13bee8daf852a8aedafdea3a6dbdb121e9e92b9d8f262ba6. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:28:45Z), 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/IENSM1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c0e6600c690c3151b484718f12dd7eb0092409dc2be64b6c712362b6ea50d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/IENSM2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfa03b13f183819a9a8ed0e11a57266e53f0b32fb097f811a52492eb4f8efdb. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:41Z), 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/IENSM2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160fda84ac1908a09f67614ade88a677da4d53412c04a62e2462d3b6d9920d8a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/IENSM2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba6822be332c7a237cc3c07d9880e65aa64b280482c3f7ec5f5186912267743. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:09:48Z), 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/IENSM2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b27ff970572b9d7b310647808530a73e46cccd1136a6bcafd3ca46803c4974d. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/IENSM2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff3c0dbe32bdee7bf272935bb5593594fc3c950f9675d3e091ad2df5f6501cc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/IENSM2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7f54f2b5c3eb95f4bdc5cb527258559a010679bbb699c184b08668bd96bd92. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/IENSM2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634702dafe3a984725f671d5a03259698395a6f90780d42c830f21e0599e2af1. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:05:53Z), 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/IENSM2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d3bdae14e9785ff4121e07532cb078dfbf749cf02db7366b8abb39fb205ab. 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/IENSM2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb575a28de2189c2a5751d55b7deb4857a1c776cb5f2ce45bf0ac967dbe1e838d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/IENSM2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20086179f5807df9a22cec02378a3b92b5d655c63e8a67a9d11b54e22c2a3ddd. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/IENSM2200003.