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 0x9615eb0a82c9d8bb3e8cf186eb3cb4983a6b322b0f22848e7e55a2acf5fe1588. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b4b1deb-d9b1-4170-8020-52587f1bd258.json and https://artists.proofprofile.net/proofs/artist/8b4b1deb-d9b1-4170-8020-52587f1bd258.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 0x3b38269301626bc4b3351ea9b029e9cac3249e1fae962530d1f815b4b08c1cf4. 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/FRX452172424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c158f810fc4c437497259e5a06a0690addc3e09f3ae1d985fe19f321c4d87ad. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FRX762161140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ebd2ec33bc853426d667585f6aad19a602efe1b4b7977a3b0f7cff9693c578. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FRX202297093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb3a36d81739557ae6fb434359cae0f3a866b4119d5c043deef7a8f55ebc234. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FRX282234659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c829abc4f23b73b4026cb390d93c9f27a9bfa95d377a99cea76b108a93e4d4. 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/FR10S2387015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdaa6f7feb35b2b99c4d6a8572e8f2b5bf7270194c7cba52ee03ed39057690d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUAGT2304035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac86e429de9e160eb9ea195d0e4209c5f78bc6e1f6dfca8454acfa32ec8582df. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:02:54Z), 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/RUAGT2373771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7da1ea7cabc596210ffeed3cf5f98c5a580b0cf58a410a8ec24ca754a64da22. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/FRX872400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e97921b82d547d655c55c45eda683ba4466d150f5c71260583ce3f620b9652. 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/FRX872400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408648c7d68f3146b8339d472bb4f6e99d16a0ca7408a511dde03dbf6eba8e69. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:11:50Z), 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/FRX872400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7001456408171e516cb16091f6dd300124430185255e0114530649f6b0abde43. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FRX872400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7de4b7da0295b6c4e0c61f57186ed3e63a3b39965ef5dfdf1e3d9ac0a10d02. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FRX872400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc073d495c4c0fa1c182b71f9408464b457d514ed96a81067c5876b7c6cd568e8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FRX872400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a26f565629732d6cb783c35bd14bde3d35c33241b1c993ded8d5a4d1831aef0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:03:39Z), 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/FRX872400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69fed582f08d9474b29ddb5575566a448c7066774334e5b527ef5f6796b6a4f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:07:39Z), 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/FRX872400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147f2d3fa8299eda0be8ee84d9cfd60bccac0c90fc6655c2877083a670a8dcd9. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DGA0L2493594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e12adb7de288078f33ad6bf8217bfcff4aa0447765311488bbdbdaf95d69b8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA0S2429816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8429884de231edc33aea2f33b06f77e575d326efdba2f9cb0f097980416b9d78. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:05Z), 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/RUAGV2503413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781f4e4fa43558c3733a12a1773d830da83e30d25410f52d9922bd8355e8756d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUAGV2503418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9fd5bde934c0fc0ba07fb34e6d29e827f89fd4230a633c8e1e7cf5c5d900dd. 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/RUAGV2503424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc54c936eef99c1f718dc5486c9d2f2b7e1f328107e315c7db55698e2bb957c. 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/QZGLM2285348.