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 0x2e48cd6a80e29be9e1cb93c9aa16040e206cb575f24661b3c479830c135aac93. 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/e49c3bad-4a85-4bc3-8e03-8487c87bd723.json and https://artists.proofprofile.net/proofs/artist/e49c3bad-4a85-4bc3-8e03-8487c87bd723.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 0xe9996ea07a1fa410012946c27a552501b2c2837f0d0b7d88a80ad825597b1d9d. 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/US7VG1735383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16473c5d0e359a3b5128b54a0d0b3e45e0508d857cbf99409fb62cbf93a83b6e. 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/US7VG1735384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa362a674a7212b606fb5ee1029303df80f765f55e0c4b3bf7349094fa85a9196. 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/US7VG1735385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933545d54f6979f195b9cb3fad6f2480d93e8063dfd56655cb983ecfd664dbc1. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/US7VG1735386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9b30cfa8fdc2cf2154fc8609ad9a442f10953e5c1c46b1840828fa3748469d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/US7VG1735388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919982c3bdb9a5ccb7e216a4863c81dddc9edad751a34dd8b30c06c16f452368. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/BRTPA0600108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50feff8e1f7dc058d35fb17f4b9132430d7aef8f789c256f346be77f186cfa9e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRDSL1300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a640b1627877d1dbddb170ef44c7df4df97fa2dad812dfca775f71e2441e76. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5AB1639729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e80f383742c7c8f0fe2447c50ca0da250a2954937ee8af23ca7c5bb6fd4416. 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/BRAGL0300116.
Ruaterapia (feat. Mano Brown & Max De Castro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0321670322c81b3e4790c4e748cff2f3140dd0177f83276a99104218e18d3a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BR7I21600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe94b56646a0fbbbd1845afbd04949aa92932a113d0a20589600eb7af174a425. 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/USA2B2317005.
A História da Morena Nua Que Abalou As Estruturas do Esplendor do Carnaval
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb62d5454bd47db3eb271ca9bcf3f10869f314cfecd177bfb5c3218ec8477d9f. 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/ES6100424705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6f625ac12f54d575e07aeca89cb5ff4f179effd8650deca1424371d6969d8c. 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/BRZ9C2000353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0609721acb0e125605516fe056595c02673af68189f2be893973a78003e74f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRRGE1403506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316704d285b179165e3c97f83afa6d84e7645647f4800ce654d99a12dba88ac9. 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/BRTRB0400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4463437803172ddfaba2c48fb1933c38c49762e4f5937ed0b80399db02660bce. 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/BRTRB0400099.