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 0x199b698289bf0ec739f57da7e09b3f1989dc5c1ac1e0c32557a043246f8df14b. 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/19c391b9-6d55-4eb3-8f4e-644dfba7d93c.json and https://artists.proofprofile.net/proofs/artist/19c391b9-6d55-4eb3-8f4e-644dfba7d93c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x496935826b25122cae981e0be98d370560a35d44a081479d1272238ee2dfc32c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:04Z), 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/DEA812300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875656e81745da42534896473da08bf687aeb08cc751c4ee20b85288339a98f6. 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/DEC692400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34353890d28b3f4ae51c712c34739f3b2c1d1ff7898e0490c04789e32d7e7a8b. 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/DEA812400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97036c6d6d51508f0e82be91bb8b6e139876b58ab523258d755f044589f095c4. 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/DEA812400522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504268a82aa8d8bc836d50701fe25773fcf06e0825b52a64960434512abcb306. 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/DEA812400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34353890d28b3f4ae51c712c34739f3b2c1d1ff7898e0490c04789e32d7e7a8b. 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/DEA812400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed32db0f56651c96fd4de1b6e4818344e8155b32996da8da490cd16cc1cf7ebd. 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/DEC692401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d9b3fed2d05c1d4506151bca3829ebef318f1542eea20f1c434771005b24af. 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/DEA812400524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ab1dc4e48bc08784942904898adde33a9b5dda8b646bdbd76c967b4e0eff0d. 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/DEA812400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34353890d28b3f4ae51c712c34739f3b2c1d1ff7898e0490c04789e32d7e7a8b. 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/DEA812400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504268a82aa8d8bc836d50701fe25773fcf06e0825b52a64960434512abcb306. 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/DEA812400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbb57b43c71d61e25a3df4a286dc4bfea130833a0a20c56270e117b806b4398. 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/DEA812400526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0948f2167eb5d25065465e089b8dee9ce374967c1112d3cbe690d6cef398faa. 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/DEA812400527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097872e77ea55f8f936ae5e1d4509e201793346be8e3ad0a2869ffbaf290bdd3. 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/DEA812400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054a1e86618c610b1d2563b951b85b161ff0ce3200525d2abf8c213f6a0d363a. 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/DEA812400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97036c6d6d51508f0e82be91bb8b6e139876b58ab523258d755f044589f095c4. 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/DEA812400522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88757ddf852b926ab76496279d8bb1ac6203ffbd7bf5e752dbdb1d75a24fefbd. 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/DEA812400530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083b3cca8d703f619e2c8cdc07d646bdcf677ac75b9c4d54165e25d3c93c6ee5. 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/DEA812400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fd28895e2a4981c831b0ef1df852f0765ae19fc653962504761fb0bc67c96e. 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/DEA812400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c61cc31edd258c779970fee056ed2a8aa4675fa216a78b2e43ea7fa6d3c3102. 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/DEC692401528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6094e3af4dd6d6ed03d9855c7ee1f156018dd2173991f9ae4e39a346fba334. 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/DEC692401530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b02b562d4a4cd4e33d1ac925632356b6fe0e7ba302960df71668399e18c131. 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/DEC692500602.