thumb|Bird flight by a brown pelican. thumb|Human-engineered flight: a United Airlines Boeing 787 taking off from Heathrow Airport in December 2013. Flight or flying is the motion of an object throug
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 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 0xdbbca93ebdfbc2827162a9ed070d23be65648b4c5bbd32301b6a4108bc8df35f. 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/f2eafcd5-c2e0-4ef0-8ef1-022729504d31.json and https://artists.proofprofile.net/proofs/artist/f2eafcd5-c2e0-4ef0-8ef1-022729504d31.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 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 0x6e6a5428c418027bc4fe9400295e719e43d057ac64f3fadadcca14f44eed510e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZFZ52017202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a40f1746cb199da4b57da5fdd650a24e4d8f8cc6826c7f13868d52f5aae2df. 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/QZHN32089388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb024780a5de86d4ce7453561891af59ae95d6d92225cab534dc309e9c232eb34. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHN71936682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c041e1b701050f2a15c613699aa37bea26cee92862190caf93fddfc02e9d5c. 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/QZFZ22050945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c7ad8edfea92128dff44719b4f092c6d413340ab22f13fc2e1d9e644a3d79c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZHN72042197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f82b6fe899472b5fb12c69b936613f2705b1cf61204449bfa9044cdee564069. 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/QZK6L2000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece3b4e311b5933ee92597df31f94b16c2f88bdb8b4c41eccc890cd5c50ee769. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZK6L2000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9748f38ceec48958e60f9e1ea0c8cc0fc6efa784894a1bfc0e3c72c14f36ac3d. 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/QZK6L2000313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c7ad8edfea92128dff44719b4f092c6d413340ab22f13fc2e1d9e644a3d79c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHN72042197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fe5df3ec58c3d91484df3a34be5df4d16e8c0723d80a7d5367279c91acb07c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZFZ22187206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8709b5582e5820cbeca78046d928e38dda8d234fe18027fd203518dd6a606c9. 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/QZHNB2135751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0051383cb3a4a5ee7e2f8134c10bd8514e4eaadb72349980905eff1a1bb84cd. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/CA5KR2196524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8eb28b61b29e4571121f99486f883fedeb03be35f84e48aacfe06d2b36f58f0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CA5KR2196525.
I Didn't Have the Cameras On (feat. Sean Kingston)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae238fb1b0ea193c72965a4dae255cf0f405fe67a92162e524714f2239d6175. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CA5KR2196526.
Off Poppin Gone Remix (feat. Drakeo the Ruler, Fenix Flexin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7bad71e1b26a5f30cf792d338d7e51d8835664458afb2ae717be7bc28fb2c0. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/CA5KR2196527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4299c0fc98c790c4f21e434d2bae4bb2e4ee3343aad6138bc5c22939f07ebe88. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZPLR2191645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef7b9563fec7028c298c37aac9ac06bf10bdc40ba389974db97e7a8e877baae. 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/QZFYX2228291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570e1e493174f301d8b8095429490894bcc363cc429f1c22628d9d27c6a8a613. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZES82254820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ea11ad3769bd75973fe702096cac55e0a9b600fa7de45bce8e3c0e365decbf. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZK6M2244214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47673b5046514bec69be87638e9055261a444bea6aef6fcd3922e154bea95ff. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZNWT2251813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef7b9563fec7028c298c37aac9ac06bf10bdc40ba389974db97e7a8e877baae. 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/QZFYX2228291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff7973c433bb888482bf848e7ed72f6369fcf34d3b1131c170f03b3ef223d10. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZTAT2221916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9b7c9690a9d8f33e6c03f635769208e3749b8a8f63ba9c8648f3cf62972298. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZES62399154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71480d9239001162708dd03e8a5676ac3d65c8f6ed50e0430677c92353a0515. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZHNA2369788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07de03f64aaa5a6e6cb759dda8bcb4fa022657f1ea586f206c2f3a5664ef0a96. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6Q2302609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae14c8f1338b8a0b1f4954d62004cfd641660e8579b628e7226f559f860f445. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CA5KR2363487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad03e89b11a004980d994848439a83b966eabc30efb54cca02edb703e8811f63. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZPLR2377919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32e77a195a9b69fff5f3139d034c3b0b8e10a522501ba402de1eaa955c32eb2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CA5KR2379824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840e7dc3c2a44382de6bb9084136ab3ea047b05acbe1ee974cfb6cc5f2c876ed. 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/CA5KR2379825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d747ae4e270622a7f338fceb9c00d36835874c95773487a206f7328e86017af. 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/CA5KR2379826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195552b43cda78bec23f4007ae584899da80f9fe0a61ccb7976d767abb8e4732. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/CA5KR2379828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a59773d0f12a5f05075fe82a5b560eb76c880ff75ed6d366d88ba8cc6cfb0ee. 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/CA5KR2379829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfab5fb3655f88a53560bf6ea869dde863d3909843726b2b7d91a34e2da9940. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/CA5KR2379830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2416c36f0e2ba3cf8d0f190a723cdc5d1980bac1f8a59bbdfe2f2949c1a9f03e. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/CA5KR2379831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec2a309323d813055cce5f9d349ab761ed4bdb2c298f77b9e75be1f20810f11. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CA5KR2379833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ede1f5b3cd27e886480d36821d7b9427bb3d36269afc0919b73ff4f62d5503. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CA5KR2379834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae14c8f1338b8a0b1f4954d62004cfd641660e8579b628e7226f559f860f445. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/CA5KR2363487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1462a8ac791959b45c904a19fa343e416717cfe501e332584606c2678c505b. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZWFK2324276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19280210b936a2a8c611834f3fbdce1f25e0b08946c0e9cb2040a3f655e8a8b9. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/CA5KR2414221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae558c67ea6e02af5f75355ecb65bba195647d455c94b7d22ac51a17e0e0607f. 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/QZTBC2557080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d22c4af04190ec895096cc0446ecab90ed1c033e3c452587c580798281aa6b7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QT3F42507715.