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 0x4ee69dc6dc4da61bc082d52874c0d5499c5a10653bddeb9d409524b0640fc077. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8eceaa8-efff-4449-83b6-f50e701b1095.json and https://artists.proofprofile.net/proofs/artist/c8eceaa8-efff-4449-83b6-f50e701b1095.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 0xff64e81734777b26bb45a62fd88ed1b987920ce955b41819d26b9782188a9405. 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/QZNWS2484503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe491dd24fb77532b08c52703d646c756eb6400d7d0b3dfcf7c0d0fcccbab9d44. 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/QZNWS2484504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a6acf859ca8c57dd30d6fcaf04b1e7cee3e2f33e68cc36ee9898d144f6b3e9. 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/QZNWS2442045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9a47d0a650d337986af9956c9b93e34cb2adb7162c28a3c4cf1acd953ed812. 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/QZNWS2484505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a066bff17b3d50085126702b9ccfda7ad8731342ea64a44caf14f44bd89d7d. 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/QZNWS2484506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668397aeb144ff0bcbc27992e7b38fdcbd387a8df635b4d82f0bdba551fce7ae. 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/QZNWS2484507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c69825fc6e72803698cd5a125ec776820460f4af0c11295b72553f80f84259. 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/QZNWS2484508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94b562409e9cb8c96d6ecedd8f2e3bd2ca2f360401e7dfa1dd9146ace18762c. 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/QZNWS2484509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcbb859327c05d06f3555f9f6a362752a2ffca0124b7a5043d655a0de911541. 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/QZNWS2484511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a6acf859ca8c57dd30d6fcaf04b1e7cee3e2f33e68cc36ee9898d144f6b3e9. 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/QZNWS2442045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec0d2ec9e4aa85627a7001192de59daee3ff914d243cec4c9c725e3786030ed. 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/QZHN42486089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6795ca0db9d52406d62abc194b35b926813ea4b31d2aef06016a986449f909. 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/QZFZ62262599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90774e7b26f6fc049a47540b5c80bcd60ca21dbba6928959949425cfe20e460c. 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/QZFZ62262601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76ad8c664374c21ba5763d741721ee33474fc7c5856fa6928e5de053da9f2a3. 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/QZDA52131680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c843a5651adcfeee459abddb0b14fc7bf06851ae32af65b5e574e4f44299b7. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:51:22Z), 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/QZDA52131681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114ba11e49ffc59e2bfa8cef6af25c666e5bcbc860dace585de9fec9d37fcde3. 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/QZDA52131682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e8ff6fe86fe9ce7adc50e0e22fbf4db10a1474567eabef4a35d08f7b1872a8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZDA52131684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b4ebc9d21e773cef1835810223bb3b43080dd3d8ca94b860a66df8d58551eb. 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/QZDA52131685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e8ff6fe86fe9ce7adc50e0e22fbf4db10a1474567eabef4a35d08f7b1872a8. 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/QZDA52131684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1842ea22a67b0728694230b6b10bd971381875c15ffcb02db4c684966dbe80. 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/QZDA41915465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385ed0eab8146dacb230e441d9f55974ef112f7fd9179e9b70ac0e56f26acdad. 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/QZDA41915466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9811ca421ac1d92beb2ddcd03c307894463b498d14832472ad54a72be25ef79a. 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/QZDA41915467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65435d7211aad3c513414a315e8bdd62bc2f7c11896704f186328a6c060698c7. 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/QZES81807748.