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 0x592d9f214a0566dc69ac4eb0bbbaee104766aaf54db1a31b29413428ea33546e. 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/8011fba9-4426-4891-9dfb-79cbced5aeaf.json and https://artists.proofprofile.net/proofs/artist/8011fba9-4426-4891-9dfb-79cbced5aeaf.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 0x83f57ab76cbb61964a51456b2c171333bb29bc68e3dd2c89c29dca1b2a41ebae. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USCGJ0975702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296fc1d339f2eec668fbdca3e0ac6a24f29f5077766be77d35f050c9d7f0d440. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:05:41Z), 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/USCGJ0975756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68258fd19705f8c6d4e8259d9087140577d957fcc295242cdf12b2cb57dfe1d2. 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/USCGJ0975761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc212b208b911677bbb91aae73ec211501987b42e94bbcc41cff05ab190a667. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:46:11Z), 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/US7VG1701212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5bd2770092922ed0119a51a00d6d1996fab131455c76e85c980eda37479fee. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:28:37Z), 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/US7VG1701213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2241a464a00621d88d006f11bb66350876c4db4c9f0e8990028c22c8aa59d01. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US7VG1701214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd324210b91b96f04de760c3ea8a5892cbe477255c2c78bcfb258b7906935203. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/US7VG1701215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2867ecc7dca708f26f7182fa29fbe68a0d3f65e7628b26190f36267374384c. 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/US7VG1701216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b94a4b8d529f28ce394a9f95c2ab7ece8e8bddfe85d001c0954d7791017bd0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:15:10Z), 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/US7VG1701220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c04a24f1dbd04db20fcc2e00613db6101a6c0f7492aeb6e52c98efd17d6fac. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/US7VG1701222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca76bf3ed7eea65a5adb9a8b5b7bc0a3c7cccb527cc2766a86d56f4cef160a9. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/US7VG1701224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9029ff6ac18fe55c55957c4a115cbe889ecd17fdfcfa5362e93d361f1362c297. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QMXDC1100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb71362eb9ba86dc1c4390f89af669fcd8622721338da83a49639008d6e17edf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US7VG1701188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565265c209b63729a17cb70a0f9fd307ded5f220937d5a0e33cbbb12541bf7af. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US7VG1701190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522ee72c197ccb55251da147de299e90e90f9690cbc561039421b2733d5efe48. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAEH1975295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d733e71b81ed4fe67491286f142d252e24a0d4ffc211272214812087c8145d. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZHZ41941481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6aeab8a80e38fbeee66581fad2bc5465ab9bd0b1a37efbfe727c6ee73f99dc. 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/QZHZ41941487.