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 0xfb4ab156bf1e39796e755761c6800f8d3b4bf767c255c0cb528fcc5348fce9ff. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fa3f298-b3b2-4eb8-b4af-0b181c728529.json and https://artists.proofprofile.net/proofs/artist/8fa3f298-b3b2-4eb8-b4af-0b181c728529.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 0x59596c60339b559ed75e87e01cd66814b8f849148c45e942c5acb8849f54d2bc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXRLA2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e28edec05ea0b1cca25e9bb85f01d2e8a8822f994f3ec7460a6ffaeffae256c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BXRLA2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10661f34404d0cf19bd181680691e5debcbb243ba33a2aa41b38a8bcae446a87. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BXRLA2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53efcd8c055a0e1d26c481a07f34b6b8612ebd5c93787af3af72c06692d0336. 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/BXRLA2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9629518f488f709593fd2d9f3612e9c4ccb252453c828ee2bc648c8ab4a2a1f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXRLA2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcef5c2b1c138f164b94bcad389b918c9b980ee163f63d942ff9aec55dd23400. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BXRLA2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7498475bef9e6726329ee966bd7e9ce19d94e04d994026034cd4d01f60786ba6. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BXRLA2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c59b21903af7132dcc1a253657903c7fe0a54beebde346592481c7faab9f43. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRNFS1700087.
Macuxi Muita Onda (Música Incidental: A História da Aparelhagem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5f099d58abfd72431a33b19a8679095d0042cd7bd25116dbe1e1595f1b3674. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRNFS1700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bbb0ecee7bd3d5220ff0c1fbc22bf37f85dcf9b3380322fba3e56b09ac4a33. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRNFS1700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e3dba589c41ac2fb4b906f42547dcf80c83d0a82f2a25cf6c2420e24eacf1f. 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/BRNFS1700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbc97f658cb601cff9a24a530420ee9f428e054e3f1b65e6a2693a49aed264f. 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/BRNFS1700092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3631f2f77018c08af802f9978ae77bab6e12742d35280691a05f461e541b6db8. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/BRNFS1700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d04cedab532791a5dc852c7fd6d252c21359f8a1e1cad849176dda5f568906. 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/BRNFS1700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52651600ae5f73adf96ffcfee4780189d713cb3a7a8d476e234befa6311de04b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRDEP1500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa5d5d566fcdc5485ce918de58719f49bb0812c7fb30694421ab37fae4b37ab. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRDEP1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00012d51b188e29464fedc2ef263cde8e310d7854d42ee97b17bb712392e3908. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRDEP1500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3d8aa641347d1af14f7bd005a20f6bbe2d7b80947d50d47236de0ef3341fbd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BRDEP1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810059125533ec968a3e9eb5b92fc48f9b03bd0708f3d356bbca7eea725df1c5. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRDEP1500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a75cd750fc29bae3b7ccfa67fc5ccedd4f09701e218981b23fc571b3b31c874. 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/BRDEP1500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193f60ffbb3beb136d9a6748a4a7b1c00ce9b49563a85d61c90c29d4fce479bf. 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/BRDEP1500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ee0a65cad0a82c4267bf6350cc56d24b8a00c2c87361de71f4859b3a33fdd7. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/BRDEP1500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571b2d20007b1d7b7f6a0fc7e2a259ec2babd6597ec08093cf6dbe85271879e0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRDEP1500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9570b5dd9fd28956b89c42ff9946022bda8f0eb128fa3b18ec6ff1ff18053770. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRDEP1500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b4fae94900d26eafeab987ff5ed0b27ccaa33f780bf7eaf8d191a566350443. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BRDEP1500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e37930642b268dabc823560a171f19294ce2a1801ff06d80cf71f1437973b0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRDEP1500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df7f6f5276bd9452e37341193bc469bf4aae60b1ff91c11ab29f380aee8a1f9. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/BRDEP1500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc13d36e167238400a566f9f4b3c42169e71c0d8fa5027442264bc247008fde. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRDEP1500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111cdb7bf03953fc65e5fe7f56120d8fc84a8f4a93eda9b5b1d8c6c9a4620cc2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BX08N2400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5ece8b722dccefefac69ba7b32bb46a2db13cb2e365d2d484beab34ad2e194. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/BXRLA2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee03f4540a3d67a43f466d11f3366a3444b9bfded7fb6266ca9e075ca59344ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXRLA2300004.
Batom Na Cueca (Waldo Squash Remix) - Single