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 0x86397d2e792539b39e2efb0d267dcc34922b410dcda8d3feb0a1aa45f50678c9. 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/eb69c010-bf99-4daa-8a4c-8313718370e0.json and https://artists.proofprofile.net/proofs/artist/eb69c010-bf99-4daa-8a4c-8313718370e0.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 0xa274aca0c7de2aaa2478fbd165b162fefaecffede47f8de213ec15eaf8cd83af. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:47:22Z), 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/QZKDK2165100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdf172f7eefe8a03ff819bd066ca4683e0b49d12604233784321eacf99b1ed6. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZMHL2057999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf7e9d4ad1fd447149948bb5ca4a601563bc7f987b6f1ca136bbf33310078b4. 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/QZMHM2007787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4453e3cf7374a494708373ccca9d5ae0d9525cf4b19edf7b86e56a34e8b8676f. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/ITWZ82200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98d45a3448c6145f879258907ce9a478d2666e767a08f1c2abe86922a0c1cf4. 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/ITWZ82200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d4318818aa0655e1df94220cb9bc1bd9573106fdfd4e91a15d8682ca4eb85b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ITTL52201508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1270a093c572925ded9f45f8246909b0c2559fccf0d77e516974d43d2765a046. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ITTL52201509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61106975f44f65db1c5196c8e91c59bffb62ee88de73841ace2725336f70b620. 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/ITTL52201510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804cd6951a9e2b51fdb2b8676beb35329576dc36b36059fcb62300bee69a2cec. 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/ITTL52201513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c89ad28c9dd60f260d6e4d515f3e2bea6acafcf3bfa93df75e58b115884e51. 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/ITTL52201514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2ae9c41f013ada8332b46c68879c6b0b11bc5b43b46af002e54c86a86f9995. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/ITAXQ2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9414a2b66e94a14d0e4b1fda919cb8398811d76d609accf29a3723da93bf0ae. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:42:45Z), 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/ITAXQ2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b745f99f839214419fae0c9f5411a9048e14da948a034c8ac7dc9caae53dcc. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:19:34Z), 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/ITAXQ2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02eac0c52ad47e09453c2b2ebe26e4c08bb02f7becbd214a7b723e222eeb9b0f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITAXQ2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf9ac404a8d22f7dafd7bad4b12cb52f91a412abaf35bdd5b74c501a8643833. 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/ITAXQ2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceedc316b3fce39c2db3552c8136f8e99e285b3063d8a94eee1a3ce8b3d3860d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITAXQ2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692927aff64fd80a546ca8d9f28fce85e39479f709339224694440490b9f03e1. 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/QZJRB2529136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf907b49a1cada95571a4818425f35b3e0c2240c5ac3c5d4f2684b39537b7b776. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZJRC2529228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4cd5b1ee85b11c044b4e597ab330fb9510056a289c3df6e915a76f9fbda205. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZKDK2503352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8578cc246fd60af78cd2bfc3a3e2580e0966c56a18d4d85dcacec72dbf1aa38d. 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/IT2J82100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a77a5c212213037126b804ce489afcca9ecc815ff6fe6b5b9a41ac8062d4b9. 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/ITZRF2400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa550d11d8e70dec3f5608bd2775633a3cd268bee464223df8b5dacacc4602a89. 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/ITAXQ2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09375f46b91aedbf296f8076877202bdad150cbdc9c528b4a2d6555ddd365fe5. 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/ITAXQ2500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa550d11d8e70dec3f5608bd2775633a3cd268bee464223df8b5dacacc4602a89. 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/ITAXQ2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09375f46b91aedbf296f8076877202bdad150cbdc9c528b4a2d6555ddd365fe5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITAXQ2500033.