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 0x6a4166db001acd29d80b859b47888b6e9e628addd552b51ba9e9eaa2ca8d390e. 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/ac7f05f2-3664-418a-896a-0002ac270ed0.json and https://artists.proofprofile.net/proofs/artist/ac7f05f2-3664-418a-896a-0002ac270ed0.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 0x1e67999cac63f227e866a87068986c80f962966fce73ae8e74c6c883973716d5. 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/BCE3C2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2ca71e63b727ae093ca4ac3d85b1598a684c45ce85a99cde5e6424edc373fe. 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/BCE3C2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70861bc58e0288a2f0fdd77c048bdf1cf5470fdde2353405a0e99672cf416f9. 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/BCE3C2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dc935feb0e21d8a79b4222ee54b9f5afc7ffb1d8635e66f4d64397b65278e9. 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/BCE3C2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f375320e2b3503b29a4ede2ca68f81b3e8ff3a6872befb6649deaf25376d932. 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/BCE3C2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf76aee640d53a4f9daae6f9429405b3c1602728b998e743367a521c391bb7dd. 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/BCE3C2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01283e531c0b8145a7b1df20e62fcde34c6463ff763d2d05d65234f95ca2e120. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BCE3C2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3417618820fb3d7615decea31545109865a005fcd9b901909a5190d786f46d5c. 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/BCE3C2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674fb5b528decbab71fba6ace31da6ac90eed78e12b7643e69ce0fda3a35871e. 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/BCE3C2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa01c0a0d98953fdf4bb509c6accda24b387d71633c704dab2a4d10c5842929. 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/BCE3C2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b35b6936e3ad232cc3a1fb603e5319e5a3f853e71eed724bf50568176ab7ec. 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/BCE3C2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dc935feb0e21d8a79b4222ee54b9f5afc7ffb1d8635e66f4d64397b65278e9. 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/BCE3C2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf76aee640d53a4f9daae6f9429405b3c1602728b998e743367a521c391bb7dd. 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/BCE3C2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01283e531c0b8145a7b1df20e62fcde34c6463ff763d2d05d65234f95ca2e120. 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/BCE3C2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3417618820fb3d7615decea31545109865a005fcd9b901909a5190d786f46d5c. 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/BCE3C2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b35b6936e3ad232cc3a1fb603e5319e5a3f853e71eed724bf50568176ab7ec. 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/BCE3C2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21569c9eff5105f3f69d53f067ada8af9f05b25c462b878ecd9d5e504c2b0edf. 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/BRD031400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95be9b72d6e9932f53b16cd0fa2a53fdbd4b3dc90f6cb9323f516380dd41c998. 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/BRD031400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185a8146e8fb41f6533b47b406b921232e9ca76c48ef96d8c21c560db4093225. 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/BCLWH2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbd8d4a38226e596cf2a79d0d8b2ae052baede053aeea4994e8099f9f50a30b. 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/QZ2J21507204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4db7790b2b71bfa27d8d09d42c5c4b6932b36742f17932930ef98283d415ef. 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/BCE3C2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63337a19f52fcd6a12098f6e043dd1530ae92f09cec12adb57a972ded13084dc. 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/BCE3C2100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de48e8c28e525ef6e30afa7274d9ff679d0be97cece7eee0b7327124d0b9f8b. 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/QZHZ52098249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c063c573c12c83a47d067be082785164b176204694ef26a05970eab3adfa928. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/QZHZ32055362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee40dadf0765a29bcc377f5eb8d765535eb5a2099c0dcc6b1a41795132f6aad. 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/US7VG2070647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0b1dafac5d26c0bf9f264756008f72f69f33ac9a4d370b5aaf607f9b73a0ed. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG2070650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe774cfb77ac62d6d3340dfab523fabcd43b5e2619c43c38fb6edc92e9d1889b1. 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/US7VG1868371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bc9e30b41a14ad441cc7dc7ef55a9f226ac344c9cb2281a04d5d8adec95962. 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/BCLWH2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0ff19b44f16851792118dbf4491a42689bfeac0ca6ccbae15664bae1cbe3f8. 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/BCLWH2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26267f104168dc2f894741198437903fabc53064811109fa63973b6abc50d3cc. 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/BCLWH2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40fd3faeacc9c505c7a444377e02095029fe388b3dcaa47343ed30f6d8840ea. 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/BCLWH2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab31ff5a1fc7bbe818560527c1568894ea5f101f3b48748daabe5f65d12c8c7b. 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/BCLWH2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ac430e5ea7dc563641d21bc8b956d2f2b0c1999f351f328a2c49574d6a9fe3. 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/BCLWH2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185a8146e8fb41f6533b47b406b921232e9ca76c48ef96d8c21c560db4093225. 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/BCLWH2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050f8ee0677b6780c601ba76c38d0b72fa13cd0b984c41f5fbfc1b55004fafdc. 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/QZ2J21507205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbd8d4a38226e596cf2a79d0d8b2ae052baede053aeea4994e8099f9f50a30b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ2J21507204.