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 0x6c29e00426679b726b89f0214a59725489d81942bb0201eee009b09b68c1246c. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b53e5414-a6ba-4f8f-8748-4b1abb87c53e.json and https://artists.proofprofile.net/proofs/artist/b53e5414-a6ba-4f8f-8748-4b1abb87c53e.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 0x57504e27ace04c49063d6069f8fbb6db401ac8f937f63ebe95b09111b0b3a4d3. 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/QZWFK2338414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710b7ad681296040d4c11351b463a8652ef39b5978c5a6d35d3d9bcea0d8536b. 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/QZWFK2338415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1401d11b5ba9e7a581dcaa9e6214e093ddb530f638a72cf3031f2b220ec1ba. 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/GBENT1692052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e35c591e087c0c3fa1d62d2c1339ad52e4302ad3cb1dcc46560f2db11a9655. 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/GBENT1692048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c3c2eced09d78487001bd495117940869760aa925f4b010197f2873a9df2b3. 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/GBENT1692033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7350cc7246bf1edfe7e0ea5f6c2547189067831f3ff0fd67f9e393ce0ebc32f4. 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/CA5KR2113387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680968353f75cf9cc37ed4dd4ad80d28a993657ddf10f8e9ab6af343ca5188ee. 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/QZ5FN1808227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e536d220ddcd4325173f778faee1a8c6aa85b9acf3d8853115b0db49dc2fa13. 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/QZ5FN1808233.
Sync - Axel Picodot Acid Domination Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda26c5e8d315d5bb875e75fd2968d67486208baf2d4c15692d4916d17ca74e9. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZ5FN1808235.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd819ec553722fc19c8da7b5202bbf76dcfde91c65a356867c1974db958c7d7. 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/ITH642001170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43185537275613734a1b6824e1341f66c0db1ecf1d7f448aac5d3205116ce9b. 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/ITH642001174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a8186520d0f25781704de77f3922d042042b0eb3ec9fc3c6d4ccec45c612b4. 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/ITH642001179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae62533f2ff65b8a77f2f35b44a0b172a7b40559845471055a5719b8be9b68bb. 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/QZKDK2120701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa492d35e3594029ebbbaa6bae5b866c3ab4148a7a73589d55dfcabe86f63ea5f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ITZN72000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99ef9372746cd02fb5f47c83424b9ab7721439ba1608289705487ab9c1f9874. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITZN72000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0433c75ff2e5199771ca1e8b43c07c3f68b030dcccdc30422e955abc8018940c. 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/GBJX36715020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc121fcc12404ef1410c3aa9bb485619dc89d369ba5dff530c95fe0c1bb0ba91. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBJX36715022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47bd7ed139b3b45c634f61584dec5c1116b33d15edbcdb352357b6279a5c6ec. 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/QZNWT2204941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09865eaf6090786d5ccc9d878e16ad572377ca2a0b30efd4aaf0195380b54562. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWT2204942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21a5cadc962279e0e2cebfb2ddeaf3eb07b4fd0564a61bbf0c0c1813212efa7. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZNWT2204943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60af0dc0a293ee81d4497d43ec82943ef0ac8acc3b52898ae09ceb4b8f017e84. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QZNWT2204944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722955c6ab68de1c92a891fffd93f2c27040e77a3b0f6890cc6070a9a0025970. 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/DEQ022002478.
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