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 0x4d18f1c097a2f7f8f8864d92d96b5ca78e0fd56227530e69e25a4735e9686fb9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91cd96e7-617e-4dd0-95e9-c4e0956074b3.json and https://artists.proofprofile.net/proofs/artist/91cd96e7-617e-4dd0-95e9-c4e0956074b3.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 0x6be1075c23f4ece05f499ecfc7d8f6e5e0069410584facdf27cee8d69d39f97b. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BXDHD1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaefecc45535395c33df822712829469ddc12d3b47dfbc83d9d84723e622964f. 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/BXDHD1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b542b778bf9cc54cf8de7bf326676389ee9f0c65d6dee5c02f25e142578d66. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/BXDHD1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01239786836ad630cc086a1237995d1761ba45e0dfd80ceb319056fc7721347. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BXDHD1700014.
Permita-Se (feat. Eduardo Freda & Primo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfb81e80a954b0b55c6b358bd5e8cb2ff2c59dc369f6a3d2d3220608817af33. 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/BXDHD1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b142fc9e115e052caf3e116a0dc195cc27aba196f84bae2b3347c6c426c4df5. 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/BXDHD1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5bacd4ac48b0ec1e3388a17e919340e5612ac8ab1ce50fda192bcbcded9752. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BXDHD1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3e6af87c8b03eecefafe776aa83ba7a629a41e25034a9a576883da0998e35e. 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/BXDHD1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd943fd3e8c5681307d1358b0f536e20173dc87ebc064ac873ce21e3eca56ab5a. 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/BXDHD1700017.
Comunhão (feat. Davi Duarte & Zombie Johnson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9a489dd121ed9ff21950d4267338856db98b48051f237ece1f2ff89585ba8a. 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/BXDHD1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448661e1b5adb41036c3c9ef15d3809f3fa19224906a6f0ef8f8c7a51cb72582. 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/BXUHI1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98b5dd341479eff5472968da7e419a012ca116a7677b2ca66c2f28c61a1c3e5. 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/BXUHI1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fccaaebbc7f066f7cb7297da5d67916dfbca9fa8c3317ccdf44ad0d9ee0707. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BXUHI2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b6405d518bd74aeb8741c4b0e3cd13b97f221333668bd111754d1d4ee631a1. 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/BXUHI2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb592d7618ac63abbbb73d08a0e71d9d70f166a77fb796926b23678b318164c16. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BXUHI2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83050bdd436987218ddbcb92bec2fdc3dbed7e9ace40391d58223dda0aa5b6ff. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BXUHI2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528667d2fa32ed7b0ca2c49f1f3f1d82714930b4618c0b31f3ba48682a38d376. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/BXUHI2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033125b92e48c2004c40f09e996edb141e6dcd14627617e83feab8bbd225c6c4. 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/BXUHI2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbd79dfbc852a205ed7a2b3d33dbedbda8b638c19ab2d691535b551e6366590. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BXUHI2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14c75fcdf416faa28388014fd435c7d2610bdf214d0025a3f5694f14e79b47e. 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/BXUHI2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50821d2be9e10683a890bd8f4a45bb173d256652fd01606892a01c91bb081810. 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/BXUHI2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777e357f8a335a3ebcd7af317fc473de52d7a6b026d43cbec4a42f8748a93931. 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/BXUHI2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7859004f58b5f1fcf153ec6e5850ee4da4b18ad16d23b91262c1aab197a1515f. 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/BXUHI2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa879b255945e559d2f103ab94c4eb7151b75529496d41f9529a2aeaf31f61827. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:28:33Z), 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/BXUHI2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5163a1c0460b194a69c656e6faf0f86e398d44aa314b758814bb64aac2a97adb. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BXUHI2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff7f858947055fa96f14acfc0390518a83b5262b9668b5c8e344954a75ef39c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BXUHI2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81184c883428a26fc43b7ba2057c7026ba03b26ba5622fe0939ce83251e12f5e. 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/BXUHI2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc3317d74387ee4afbff1548fd098017b0efbc5067453f812cded32b0fe34ca. 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/BXUHI2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf451583226ea97466c7d556818a167ebfb5c90480cc5b0a6474ceef3d62cc0f1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BXUHI2400002.