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 0x068a02ee36389d6a69035f5be77fee5c16ac5cf314245ba0cb45d45655e0cf03. 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/a1348a96-7ba2-46ee-9187-34a55ec64874.json and https://artists.proofprofile.net/proofs/artist/a1348a96-7ba2-46ee-9187-34a55ec64874.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 0x6e598800e0779669f175346d366189af216c1b9b8b9b32ee905371e261c07c80. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZNMV2148761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744355fa8912ac558b44570cacf2ef9f1e58237de57b35d88341e796bd89bab8. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:06:05Z), 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/QZFP52106366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29838ad58fdb80ecd0d58f4bdea7542425f37e0652cc36c00eaa3675ecc1b95. 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/OM8DG2194335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c76b91226878a807b380b0f14d0655e33312eb88e69174ec055cb6eb4827df. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/OZH5E2149345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1a6020fd2f1b870cfe275ac87dcbd47eb3ba21b99d0fe2f1922e7ea9c35f91. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZH5E2264831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497b4ddea4bd019823bc324db77175bca6396ace53800ed995e3a62c91f44634. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:12:11Z), 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/QZNMY2291300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759f6b45ec4fe9351182334ce497908b3c106bf03957cc82425b362a2d9995f1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNMY2291301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa22ea73bf08d9eff995a39436162f3e0fb40b24c21f7734716b480a20fe5cf5. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNMY2291303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9c37e2bba8022bc48dc1a780f63754ca4c2964885550b7a9ab2d65e460dd13. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNMY2291304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e9a2ed2b29f4dc5321c73cf2f824e437732a2da6a2984a92494b739509a07f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:36:38Z), 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/QZVEM2310472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c3eb0f6c1478da06510804d48e01f851350ff39c40f64374bb00cc1d0741f9. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZAKB2377377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19332a7ddfb16fe16efdf8adbb94b8529b35432e5744ef518fe6cbcb0eb0b3d1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZAKB2414857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12f462d9cb4f0f5ca4cd509d6fe98f7c322e6a67a65c97b324033642b876e53. 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/QZAKB2448557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87277bb02fdc26b525f5235551eee42814cce5f34c555e44744e7fefd829cd7d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZAKB2383968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12f462d9cb4f0f5ca4cd509d6fe98f7c322e6a67a65c97b324033642b876e53. 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/QZAKB2448557.