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 0x038f50eb0e20585ee412b601997495cd31095a9c37431bafe0f8267c98842055. 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/5f3bf645-4d2d-4b91-a1c8-553c14eac1f7.json and https://artists.proofprofile.net/proofs/artist/5f3bf645-4d2d-4b91-a1c8-553c14eac1f7.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 0x06f3ea61895e1269ac129b9f7f83dd0de3ee2b6cbdedbb691bf303a7f3e9e83b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAEH1960196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202e3be22a85b3a053c289e235e358d4543038b460429da1d5b1c38ed06265e3. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/SE6HN1985314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4eb68c3b18d29de3ce29af6b9f71323d1bfd0553612680c822a25557ff052d. 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/GBWUL1920101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497bbac8eb3d16be59d81f84839692c9ff99cdbd172bc24c1d164b3b70e7c524. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/CA5KR2026431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86123e73f2e1866c45846e6a9ded0bb9269c8259c43ca48e845d46a71d73ce64. 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/CA5KR2034100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b63a4838a208cd7d09b759e955b570f8ca2ffe43a68b0c28502ff14a93ef93d. 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/SE6I31982174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26798c3d9bf97bb47e5fc52e3f345661cf0eebcaf74e52b207f387ccb67309b1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/CA5KR2019511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2fa27790c60d3fad0776ac14046fed5438a26546bf3f3b47d5f61b8901e792. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/COSO12000249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050498d8e6c52039734f3b6b752a5e2bb3bd8093efd0e7c0bf909eb6868521aa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMFME2166269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050498d8e6c52039734f3b6b752a5e2bb3bd8093efd0e7c0bf909eb6868521aa. 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/QMFME2166269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd752f120c0843e82279065f3169222ad2f8d98a0ca2940609ecf0579c559fe. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMDA62160541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687b2d3383f71c2c23f85caa505942cb0bf28993e8c60ecb598ee8ac320d67d2. 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/QMDA72139622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e30a18b901e9928384334de3e46bc486ee14d6a8153bb392be22223397a8b76. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QMDA62250222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cff79b2a54b63a6a7f5dfb5266c047e116f2c361086e6ecb984c236ec80533. 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/QM6P42340233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3be3cd34ae93a71cdd9886e5553c11f3e29b4e779c18761e67d4ad765e1e00. 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/QMBZ92307829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08a51b79231f85141049498cb74b3066385e97d11478e6bd165851be4dead41. 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/QMBZ92347328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd20652076c0665071d22c0e841cccb7530c4507f7f5461bc1b8d6d21d158f9. 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/QMBZ92307842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e1c6dcde6964ebf8f47ce760219eebd921de909b1b539bf2632910f069fb3e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMBZ92307847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143366ee49aaad533392dc730e9c4638ca3884e4ae82ea187adbbe09b00555a8. 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/QMFMF2338944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268f54712345bc6f4a25c334c8fb532fca5a5d3e0e66d24da1ecd3102f2cbe15. 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/QMBZ92307831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd144cdd276d816cc709dcf235c4ffdbff7224fc5ee33d688902bbea85c255caf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM7282397219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cff79b2a54b63a6a7f5dfb5266c047e116f2c361086e6ecb984c236ec80533. 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/QM6P42340233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e880fb9fc5c141146a541ab0c32d0536bc1023c99a9506a703a2396b78a5e7. 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/QM6P42314881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f39ae4d0291fb5e5a35004d9c085aab8e5a676a6b92b8dbdac88d10164dd9e. 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/QMBZ92307836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f8d14835f3a11cbea86f17f9a46e31593f7ad56d62112dced962aa8c597186. 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/CA5KR2451396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f9c2afe7817a48dd5ea6a089621983dc62d235d3399d87b6ac8d5623477cd3. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:17:57Z), 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/QZG2X2402926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfcc5bbb17a2313e27a6d43fbc6a7161ac0bac6cbb6ce93b10c9390c0659823. 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/QZG2X2406236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b89ba614801859a681a39c37f5d1519d82ed531ebca2eb45ff6f21422970d0. 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/QZG2X2417627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e225463a86001f309a528ff855eb0fc081cd4ee6bcb34ebec0221162dd98cb6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USDXS2005599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376116c42116373cd3509b3cafbfeb8f6da12a5758435eb1e4ef909b5f4f80f3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM4TX2344914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64c5f51d74252bd756a8906fb06160cc85c01bf41475fb86a368151986fcc65. 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/ESA011641376.