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 0x582294f47f9da56c3c3010aed2d32138ba8e8fff77f781acc05df34ae82e2f14. 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/371231ff-576d-48be-9dfd-1de064dc3b75.json and https://artists.proofprofile.net/proofs/artist/371231ff-576d-48be-9dfd-1de064dc3b75.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 0x40872ba31d8d1308575d81058a93c89caf39d6cfbeed30c9c49a9417a090dd19. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/US7VG1755860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d9c3466749250779f0408d3a6e705a7c090e19c2710f437fd1f6d443cce8ee. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZ5AB1983133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5babcd44023e95fbecdcec180f02305276d02850d8a8507cd6d7954c6d06d310. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ5AB1983135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ab96d0276634c843021bd89c5f5e81a08c4c92144a12586a361a44751870fb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ5AB1983136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d240bfaf18d1e166ac6b817461258914f1a546d4ff35478d83563be19400f50. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:51Z), 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/QZ5AB1983138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a0d03783a89895c1f36e2d9e1bee26a1ee18f89c76539c4af0f9b6ef8c1ea2. 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/QZ5AB1990336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efe2d3658bd7d09f80359628fef192e7313bde092f3b99572767ff9929dfb30. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZHZ31967398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c95858f2aeaee65da1cbaca6313099241e0d5090edd529886b6b2c025e00205. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:55Z), 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/QZHZ51916821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201a822da62c234e54324aa27f6843a536ceb9f187c4663afaf8f82beef499d7. 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/QZGLS2059706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c8b32beacba41eebf567091e2850fb4d2bd66702e0cf8da3b5e6e08c926f16. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHZ52075022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ae9bb1b61c5af58d4d1f658227aeeca06d92af392636529255bf1715901481. 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/QZMZ92052866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e52499ae8ab958e7186ed5fceecd1a6dc3874614faca64914d0370ced1152bc. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:50:25Z), 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/QZNJV2088868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6efe9f9724e4cd38940ee607408e664d49094b113a8c38460f2b156cfc5c7b. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZMZ92130903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1126fcf141a4ade0d01c9209b27e4a933537fe3c7ce53566a8344d83fa6b4e. 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/QZTPX2102801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c855ade198d84cf4f209d3e40857b858c93718d73c1b529de207cffd002baad. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNJW2226433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06f8c531938137e8248e883cb08ec500ce1787d1747323086fbad5a3eae66f5. 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/QZW9L2269111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe17cd86b01f5f422df7ef99c16d6b3b52bdeb20a48943c33706df7acc0e6a2c. 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/QZW9M2212676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cf67f5045b383ed14a4f05f2911a01d231eefdf7e20e13acb9746ddd9052b4. 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/QZGLS2319007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a243f6156dbd5ce42c2dc5ddbd6fc0251e958db845eacb46c1525475d01b28. 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/QZGLS2393444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97bfecf9767c7214b30f196bc4a36ee867e112700be397f6c993359e4387567. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNJX2370079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148f9cd5778f7fbe8081e50199caa779f5326cc738bbf1d5d078eca7f8a216ee. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:09:40Z), 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/QZNJX2550568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf02f3be752fcfaed01db2081b7f3396c053d470584e4eeb49ab5c778fb61e13. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTVM2510513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fac27eb9fc324660499a2be4f02db6f643b34c18675392d2eacc7b83c8e2df1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US7VG1784281.