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 0xd8b117d736861ea629b13a59d372737da9137e827345303e7ab842f8b5775a4e. 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/cb2d6479-e7aa-4593-afb8-036dd2b6c62d.json and https://artists.proofprofile.net/proofs/artist/cb2d6479-e7aa-4593-afb8-036dd2b6c62d.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 0xdf7a199505412809fefa66ec64fcc162b6063139e73cf1648cd160145745fea6. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FR59R1792690.
Entrada Proibida (Alô Porteiro) [Ao Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4677f5b69a7d475557e63a8a21878a90a26caae3acfac18bcac308dc78772d39. 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/FR59R1792691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219a9ce190e4264ea6a944065fb818bb24c009aa68a9435b1a520fcfbfecd394. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FR59R1792693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe680e3c396efe1a5ca367880911eadaaa6e851cbda7a8a8d159650454ec67625. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR59R1792710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25551e618fc5992b10f812d07b7f95be949e9d9319546645f882c7e42791d0f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHZ31959553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3457915b946f9aa99e26d23620c2676cbbadef16c815e0ef0a18a896a758146. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZHZ31959559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b4a0074bf36d52bf2377cd84594e510dfe01ee47558f52baf6663de5fb1630. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZEQU2069562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1692eb50573a36e061775d65047a900eb1281de20d4c30a072785bd4660efba5. 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/QZEQU2069563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70f760d81c111b23bd2270d060748f2ccd047dcf601de52ae6965b0e45ad13e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZEQU2069566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c4e87314738a990148851092b2e4792fcb66751cbb00900b325e56ad2b2142. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZEQU2069567.
Impossível Acreditar Que Perdi Você - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c1f2aa3909e04aa54777b69c1c1048a80793a02c3bec07abd64b7cde52881e. 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/QZEQU2069568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc2a35fad5ce3bb40708812a9aa8b398840f255bf3f783705317417abea1df5. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZEQU2069569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3161f28d2f6fca09a99bc1a73675bd36be70a60c165a09bd1c6eea12ed3e1b8b. 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/QZEQU2069570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3c2f151b9f7a120bcc158a0524c7858b50961ba299a461fc1c1db2755b5738. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZEQU2069571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef787a928a4b0e1e1a5779cec04f09c6253bd41c6abd30ec1fa35facdf3060b6. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZEQU2070565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a866759a8c8b6a1c6821c5f9d00b31f03f860643279b43b40e4cc3d5bdd906. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZEQU2070567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d7989649025d3881a8b968fa11344d18cd22069cdbdad04198006c4feb5c21. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZEQU2070571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4363ac52e8e8bb2ceeb1769ff30a8f41b9a7f176976ff5cc9579835cacdc7352. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZEQU2070572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac081a8bf77578daac61ec2049754e7d872523f8ec1c82b187847e64380cc70. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZEQU2070576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e81e4a7c8db7bc0509217cec205edbe126ca8754c28a892e8e6b4c94ca1bd4b. 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/QZEQU2070577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06010766b1c00ecd83fc7a21ccc5bcec66b7bd83b16f4d1b0927af49336d7a15. 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/QZEQU2070582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531672f406fbd6983d3084b3f5430d23f5d16715e6ca93ac525f181e276753ed. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZEQU2070584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35356185d7b065a5269322b647424f6ec68df07ca5760876940912ede9931385. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZEQU2070588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2a36bd67067eb1ef4fc1b77d5681ec6e873156815de2df726bc9fb3f70deda. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZEQU2070589.
Mesa de Bar 4 (Ao Vivo em Trancoso - BA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0cf91b90a46b34a79faacb7c547db03e4d571842692c3537ddb9cc5d08b978. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QMANG2229948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5e976ef8485f2e7f7edce9837b239975714da6eff493e1c451b9d95dd0be96. 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/QZW9L2468275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3513ca661b5d651b45cdca9ba0bd20d6233230266ebaf1a5b2ba9b18fd292821. 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/QM3DF2406106.