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 0x1ba637ca601b5421eae264f2d9f17080d510734994c994c0cd641441dc41fc85. 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/9929ed9b-45ce-41ff-a2e9-1b355e379261.json and https://artists.proofprofile.net/proofs/artist/9929ed9b-45ce-41ff-a2e9-1b355e379261.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 0x1c0a48fa40fd12f2059559c217af3de18b15d75a69c4ad2500d87160984052cd. 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/CAENV2035053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f4a0bb8492a7b27f3bc11755d54751ba301e1cb0457221758ac2dfe3bc1b5d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CAENV2043895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875ace328903a3baac8747ed7561261c8981f3abc16cf5c229f1c137a955d208. 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/CAENV2043891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8fe9772623a435a55dd500465f1e108a360653f2ab844c48aa2fe9d7162828. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CAENV2034972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3c3eae56c37b7e0d959330c91a0099f75cc16fb67e4c9a08e886fe6005d59f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CAENV2034973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cee1d836bc48708ce18e26f5ff3d83eafabf593fc761ad7bdc8d071069039d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAENV2043893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc101adb1c3b60b945ee8bc3733e543e4ab0e48d161da0f8a765b163dc909ea86. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAENV2043881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fffb4ca4ef0c391cb50ab2b0386f67083dc370b0e91cda82118f149d008e54. 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/CAENV2035050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7921e32d8b40797929faf351c0220eba0042f8841197d74bb6f8ed05b684e07. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CAENV2071797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd3c32487c49d1b971e128f9e4683091f17a6b486b57065fd93a9e20bec0f3c. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/CAENV2071893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde29d5af0434f0670db8b5d16737bb918975b3edcb7ac6b8b10018feced25401. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:53:41Z), 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/CAENV2071792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6423fbf744ac6f5c92d39cc56584394c1ce72d47c6a1669d3d7ce6515043a879. 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/CAENV2071791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b080f536d52d7ad83d8a626d0a9bb86781f879827aed4b7e67fe0a7a1559113. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/CAENV2071909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef570fab21b1d7a64ee0225b222da7c4d3fda3ef7898cd8dd465a225415d999. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CAENV2071852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe643462caf91dfdb39f206f0ee0df03a7ecd395ed8ca1794deae3558844bc24e. 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/CAENV2071789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d32de8adbf8f0aa1c43681008b9d751a48a4d4f88818c7a20bfd0d52121e357. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZGWX2122602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2806f6d155e11b2e1a0dcacad5d11ed9cd69c0e03722d3450472a86651869c1b. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZGWX2122603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ebbc99869a8169d8db0fca7b63d3b94a5bdd90ed7d9f2721ceb56a1d5ca9e9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZGWX2122604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aac08adfab4b3014214adaae3368f93330a43fb9c6adae14c047e692d37f56d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZGWX2122605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b5b0107de99ba55d9bc3181bf2237957eac69585036d832e79cc224ba0be3f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZGWX2122606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faea6530f2286059f9012f99134213a2329c2db2dc3815d827892b4dd2656f7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZGWX2122607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4ba204646fb2f24b3fbfe61293139763dc8fee242907fc8ff415718fc0bbe7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZGWX2122608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba006e8276a99f4dcc3ed400a9d70a6e79417c33139c245d1a426abe8db92a6. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:04:53Z), 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/QZGWX2122609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb909672b428e5842ff577304d53ae0fa2cc62d1bffeca459f2ea8fdd6881b7b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:36:55Z), 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/QZGWX2203833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e2e7954846d614cbc1f7b59555a8f2e154d9c7c6aa963a57893870942b85aa. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZGWX2203834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6f7235731857e5ad4e4924409d1a231ed5333b34e7e270d76458aac322de94. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZGWX2203835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6b9c26c583ea470906d41529181bff80907a007150f58275fb088b553c5674. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:55:33Z), 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/QZGWX2203836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3bb8b29fd39f30350b8c7a11331e64e7e150946eae36b07189b70ea99c5021. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:43:16Z), 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/QZGWX2203837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d29cb3ca255dfcd4df76f9e18dc4f462e232b26e03fa0bf0a70d7d140c6c13. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZGWX2203838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b374837d20f730ca151c851110690b69d10edefa3c6ff854ae4ad92382490c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:09:25Z), 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/QZGWX2203839.
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