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 0x57258e867fef78f02037a2c50fe05c45ef920cf97a046945b5c14e9ba8e9b790. 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/86b40025-3e40-457a-85c5-fdfb42f6075f.json and https://artists.proofprofile.net/proofs/artist/86b40025-3e40-457a-85c5-fdfb42f6075f.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 0x907d568b81e54dce83be86cbaebdee162c83be4fc42239911a001b9d378b9924. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:46:00Z), 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/AUMEV2389182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fb653963d1fb8a77a078befd8223c208b3240dae117f60f29cdea6ec3d418c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:10:48Z), 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/QMANG2210291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b35c0c1af0af0076f49e228c24c1f9e7de92e4215cc75675e0c575552e6594d. 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/QMANG2213348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76473c81d73f0e92048cb1ac5559641c2eefb397ca75d449e403f20aa2478d6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMANG2230883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa44d6aca6a6d13c5474abcdd0a32586d19fe3a8bac953d99960cddb5a2d0e9. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/QMANG2249282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce72819597580c54b136909150d545659d3c4da624d087725dd77f658bf5db6. 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/USANG2415004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca19400d644b82fc46b4debfc683b1aabf7c025dc98bdf3e3e7473b942e1116. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:35:09Z), 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/USANG2479010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7c50bfbc5a80bd1700d3339c7397813cc9fbd08b6ecc31a9be236b7fe88456. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:06:00Z), 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/UKZGC2411424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0c45f65fad281510cd1d7fd84a71760c747c09824dce204e6a5407b2ea0f46. 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/USANG2477381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf8efd0340eb9ca7a13697e1831c0dd08a674d6f9593d145a0facbf67195b91. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKZGC2410520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe557722fd3036b3416f88f9f654ac22586e35132a460c429066b01a6c3ca1474. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKZGC2411152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b53480a6228b0b62f5cfe0f0f017f34e8601c8a4b2aca20ff410977734039fc. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:00:04Z), 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/UKZGC2411120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2284208d8af3cd111379613d1796d3d1ff8783af72697e8612efd5c0278b22c. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:40:02Z), 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/UKZGC2500881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b8771ab937b2c3dbc1fd16f385372967283629d8501b1f8d34168fa8dc6329. 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/UKZGC2501017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121c4617a8ac6ec465a28ac0152a1d29e278971753662777bb87d0ee53a5a66c. 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/DEZC62577575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eb4ad8555dd0a341a3e0c05e22da5a01d71ce929d1d125d124d0634e7e4150. 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/US3DF2542265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0df754f49b081a5dea015a54e744cad2175346b1de113b3adbb7040a4675eb. 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/US3DF2565433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebffe7b920f419163e1bc9bf5b92652accc5dd08aff3892b2b3ed8848f43d68. 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/UKZGC2505166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb01003cc8c24fddd5159cba364cf7e7b4417f3edbd0b2feb607e824f880755. 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/US3DF2598566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c7d935923d6fd3949b991dfc356bb2ee349842043efb4b8b369f929a3524a0. 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/QMANG2237321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e97091508b732e219b4382f29f08d5d09e3dc30b0fd7dfa728158c1208422cf. 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/UKZGC2502310.
pov: you went to japan to see the cherry blossoms.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b8771ab937b2c3dbc1fd16f385372967283629d8501b1f8d34168fa8dc6329. 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/UKZGC2501017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe557722fd3036b3416f88f9f654ac22586e35132a460c429066b01a6c3ca1474. 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/UKZGC2411152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf8efd0340eb9ca7a13697e1831c0dd08a674d6f9593d145a0facbf67195b91. 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/UKZGC2410520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7084bc38b381bca593be46cae17da5c86e7a4edcf05109acb521d112333b3e55. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QMANG2238626.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a34c78eaf24ebd51702415a6a004b700c9ff114f657cfb9c377b034df719eb8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UKZGC2410298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0daf8ae7641ecb1fd2c3c244b375e4f4404e85be61fe44a5bbf6db7984602b9. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/UKZGC2502660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ecc01825585caa0cc6e9165d62d8ad559d2673e8d001b937f28a3c7a31f0f2. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/UKZGC2503883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38734119becf7b7de71c36a3e314684caa02fc4e260546412cfb954389d8a18. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/UKZGC2503446.