Dr. Sin are a Brazilian hard rock band formed in São Paulo in 1991 by Eduardo Ardanuy and brothers Andria and Ivan Busic. History Formation (1984–1991) The brothers Andria and Ivan Busic formed th
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 0xbac8472c1bc97ab251da3fa5247cf9c5166d7a15cb76e7eeefb5bad86a5ff5d5. 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/72aaedba-0b30-4222-8c59-2fc8cb974c3d.json and https://artists.proofprofile.net/proofs/artist/72aaedba-0b30-4222-8c59-2fc8cb974c3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Album Branco, Vol. 2 (A Beatles '68 Tribute)
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 0x8c369ede72288b1098af0bb2de139f3803c7551ca66bb7dd47483a543463b836. 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/BR7BI1400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f6cecd2817299255aed923dd20ad025a6a55e6dd4d6926d8c91ef95a74a2d9. 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/US7VG1321161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcda99ea217805f8359e47eae7c1e9ad1aa076396744bd14cdc0c914049e7d5. 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/BRNLO0500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6db42aef6c5a3fa468148377f085183f60f552d89e666be577d908dd279003. 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/BRNLO0500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f525758944679a9b84f892535112d71d173f8ab6d153998185e047111ecf8a. 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/BRNLO0500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb801cedfae15d1c991bf2f3e8d84ddc71db5338a3a2cb5556104e5ae3ee2ed3. 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/BRNLO0500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245d8b2e90c6b5206dab735b1e18f9ed584ef9a73e20369d1b73c6e7c5cfc05e. 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/BRNLO0500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cf01a58a3be63aa6eba7b3cdd455b9408dc3d9494bafe458e6cd85aa6ab796. 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/BRNLO0500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bc64045a576a2e7bbe8fc9bae6a677868c95ccf0229dce25660733306bef84. 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/BRNLO0400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecdf4c5acd6e1658fa3a36235f8f866bcdc27cecf7af09db8e7d7de3598ee8b. 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/BRNLO0400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767871022003688ef942d3fa1866f1c71568cf1150625b02bae0c44f729eb3cf. 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/BRNLO0400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed24d7af6ef8d1b10029866b9f39674a3acdf6dbf8febb2b6f81548d13bc8874. 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/BRNLO0400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc040ad33c8903f48ab1d2627f899f7c7433b85fb428d6213679f0b41f52cd7d. 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/BRNLO0400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855b7d9e94bf1ba1af7eafc0edd8d41be6b7597a43707af2895f412d61a67ec3. 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/BRNLO0500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d43d03b5db2038993a86072551d643fc412f784e19a63b86cbb46da16e1515. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:54:47Z), 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/BRNLO0500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f60facc1dbbf952dbcb5ad4dc0942080251f45232191dbe3a0478e29c87a63. 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/BRNLO0500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2104df8f56e71f38f399223f252dbc200adda6a7a44d8d7ea346871de913bae6. 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/BRNLO0500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0bd648ddf420d1bf66b186ac2f077f0faff97f5c8eca29f25f06c9d66cde7f. 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/BRNLO0500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3734421c73810d0e5ddb79c1a4684901f9e688641256dbd799452c6fc4eb49b7. 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/BRNLO0500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538e93a72b3429db83bbfcbd699a77fbda4fcb8d1c9e69806a1338277211a47f. 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/BRNLO0400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc2a1f5370a92e32c20d08716cfeaf186bafaaf754366c9a526cffe3f17763b. 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/BRNLO0400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77037d3e7f1c30f3aa45fc5093b564f902c31ea5855916f65961e3cbed6277b7. 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/BRNLO0400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fc18ed33643162824ce680b43c3ebfa9dd6267815192e2ed3c425fc71a58cf. 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/BRNLO0400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f748bf81dc857855aed3fd45e53d0b154775e606494d430556529a0f5dd6c7. 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/BRNLO0400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0382ef3b6321858ba07a0cc1f921d1068fc34a11aee95916cfb6d7648e9d43. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/BRNLO0400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0eb411f4228bd7cdbec8882e301908fff2467262e354eb50e2db229f1c082d. 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/BRNLO0400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2702e0bdc1cf9b5e35576748639f441b1b670ed4afbf93cc13312ae81695aec. 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/BRWMB0101683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1da2bf4d40630edf700d209b140c09b5eda6a3936ffdc0fd229ead4f76b27c. 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/BRWMB0101684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb384a4ae0211aeed5b302b0506fae5cfdfc2035a90595465624d977fa64c8fc2. 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/BRWMB0101686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573f92868c416b74ac353a63e32ff65adaead47667101d203fd5b52adaf71274. 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/BRWMB0101687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c56421f475d9f02a77343ace27fee172b0183f61cd3eab0cc143f9dcb29161. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:39:43Z), 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/BRWMB0101688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07eb7faf33bb57e3d0feceeabef825797a1801d2c203bbb6816fe1fa6c051fb. 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/BRWMB0101689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2754a6ac82a0cb96157134b8eaf0908e2a8a43c8a41058f3b140dcab0b6ac0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BRWMB0101691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26604d233f91248634c7ac47c7f6e93c0cce758a300d1f9db6ff48b057a4a67e. 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/BR7BI2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca66d35db287cc20a921068912c558fc54b62de2dddd70ddcde244e31c8e9bfa. 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/NLA320119555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddbc3c006f464ab55990696d64e051c1314fe7f712f038ee91facac552a57bb. 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/ARF411100727.