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 0xb39d2ff608de739031e3d3f9b83941974f87435c0f84e43fc489b1d0e59853d3. 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/2457f001-d90c-46a7-8921-e64e88cff569.json and https://artists.proofprofile.net/proofs/artist/2457f001-d90c-46a7-8921-e64e88cff569.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 0xcb82e3e8074b057dbf4e61e2f5e53f8ef75ad7249c8fce0be7e58b3b944d8b85. 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/QZEQU2132791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a632cd6b7e063de109d785b8bf6bea0b9687cea5fbc713764f3bc486459e76. 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/QZEQU2149261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e93f1dab60524a793b1dad1376a92d0a1b8368c938d05898410eb7bedd20e9. 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/QZEQU2149262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5423494f98e9713e3bfec792578761d47615f1fff83dda0623fbe8195ff40c70. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZEQU2212265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6f162936fe4470b8d7e87970433ececf89a53302ab0a363ea7c89edbb1d4bd. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZEQU2212271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4f6ba6f0770ddc761797f71586e335becc68dcf8ad9d7017dd035a5230630f. 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/QZEQU2212272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712a865c1707687ed90a1313862e999d7cda7627021a193b84655d8f8d093a6a. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZEQU2257250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e61f5ec6869dea20e12d258cddc92fabf6f392391a0873ab7b2693f62f62533. 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/QZEQU2257255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaa8e7ea80552f4195ced5f9b6a5a264274dbb0fd9f5d0587cc786cd56a89c5. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZEQU2257256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10af115b21f97cb3ccce55023c3f4194116589f354cafbf180a797c3529139de. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZEQU2257257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac784518199411434b534d938d31e73b055ea3c759dc488b31e5707b8a61883b. 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/ESA112312767.
Piseiro da Barbie Girl (feat. Ferinha do Forró)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e517c9d98e4609c6dd6697a62066d10416fcaf7ec02d6077edb2d8415e7344. 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/ESA112312775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33177e2a965499558616e61db2397c3a7b12faf7e07155808d0e419b6a7fbe32. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ESA112312776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0769a180c118902cc8acd0bbb00aa0e2f839ef09e89ea121015b634dfea147b5. 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/ESA112312777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acf04bd38ad26e17a1e6cc0abe32090c240b1983d0f1513e257d13ad7dc908a. 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/ESA112324598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf24839b4bb52237c2411ffc6a3dfc3be827127dd1d15e3fdfe0264aaca213e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/ESA112325311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16babe0e059f1bcfebc4469c2a864a1d56eb881097cd25c7061e3f65de04d673. 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/ESA112432964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533c89b4b8e93284225d878165ea328e9b8656107e5110006a5a91a9c7238d74. 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/ESA112440104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dca02b489edf2d006a2fb7404c42cd761160a4f1ff367fb05616a45659427e8. 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/ESA112440106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb2775957df0f83fa9c3f99d1c7d2e24bd781e213ebc550d8b2b204c31cc2b4. 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/ESA112440110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dca02b489edf2d006a2fb7404c42cd761160a4f1ff367fb05616a45659427e8. 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/ESA112440106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905e2aa7f103ada672f00348734f6862c1b915608290ccccdf2c47aeed9b0180. 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/ESA112446743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d75f1b562edf8a4fa5b8cd7526624fc52d8149d3269c803b79cbffbd12ef6d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ESA112450813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6f650ee1d7a986e053ec0bd254e969fc29ecca1e79dfe48db8013fb9a9d5c2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ESA112455106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e0978c80b0428d5d6dd3a8b37b7b676c02ee0ff419e6f6e4481c75235f0ac3. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/ESA112569731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b1ca67b749cacb004e2a3b6ea966b0953c6a4d7586759114d89e316a827fff. 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/ESA112581981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b982ceed8a272b11fe41b4cf77e016df184cdbb02a958634458cbf73cba1f9. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/ESA112581982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d65989616d7e714f6f634da85aef2cbb248986007fc00bb1ea47547d701e7f4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ESA112581983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575091e3a2eb84e0690a179b5eef13c4ad7f6a8522ff6a1a8591620591176eae. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/ESA112581984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b8338e29dacbccf8cc86782fbb008af83f850f45e96272f9b8950671301ae3. 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/ESA112581988.