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 0x18b6c2c10d8e3fe5f93d44ea282cb2ec3b7e9cbcd61075dd515490345efb1edb. 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/27dac6a8-4661-4cd2-a6e0-74590bfbac8b.json and https://artists.proofprofile.net/proofs/artist/27dac6a8-4661-4cd2-a6e0-74590bfbac8b.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 0xce5880e7bee0f489888056e3a399098e1d8ebd8846dc2b7cd0624655dab12127. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BC5R32300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ebdede830a8d10bfb87bc2495383700e0ec0a441d618c64879b1f04815f8a6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BK2242400233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8f06299b9e8d0077839b778fbbdd063f87ec6f609fc9927c518ccbb076e4b9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJW2498358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec99b61b178007472d54ffb10d5f9a489c798570d1b08b581e4b6c507c1bc0b1. 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/BCZ582400049.
Fica Muito Louca com a tropa do Aarão vs Tropa do Urso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3fbe65bd10cb902707c23aa153e2dace7647d1957d9bd1a9304f7b89af2de3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BK2NP2400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1351d2bd107ec46a5656fcc3e67c9ca943841dc099e4d5a4f1a1479580e361a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2452576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2181d1607f190b307050440a516f57855d1c51482d0408670ae1e6c7935cbec7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BK2242401668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0216994311aac7d6ccaed2bc31ee1ada8ab280acf5c26a75754de9855580e14b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BCIH82212082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abc1c3215084e628853f04d81c2c00053f0e5aa1d3e8f587798cfc122e6eb6f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC3PG2331080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc46075592e8e846cbd691e738be76ffa93d3f5a350ce53e80c08115172426e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC3PG2400747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf047dd526c0d1c222a7afd544e3569b19a345bbcf87df2b5ea4b0799ec6b1a8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKF442500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b64e4b79b671c7281f74565629fe53931ef6769be437caf3439f69cd7c2acc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BK2NP2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bece521dc84073a5f9396c8de1693f12c4195598c5ce8a8c5362201154edb6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGLM2501386.
Ai Amor Não Vai Embora (Remastered 2025)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a34eb7b073da6438f39b492c7048ab1237bf67d0b75cd44168aef8f6ad3c73f. 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/BC3PG2500168.
ANTES DO PAGAMENTO VAI TOMA TUDO LA DENTRO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ac56ec1d7fa051de0cbe5fac45c7210ec7830ecc24f687f988c75cbd71015a. 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/BCFCV2401444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb889065b3c8440f570db46736bd155a579c82de4b3aa28f95acded2e1cd78d6. 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/BK2NP2400161.
Vai Passando no Seu Corpo o Kct X Tipo Piloto de Fuga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270850cfa7f6e3869aa42e2a9d9730325cf31f590c2dfb4c3fff425113398a07. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX4IU2344003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aff4c6048ac1147a3f490b458158888414f6573f13640b425e8477d493ac2cb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC3PG2306897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2234e4730e971ad4eb824b3cb08375d44d4160a0c11a05a64ba7bde21512cd90. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXKG22400893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e55abd2476d724c95b72b4ee7091138de5bf7721c27ea9a088ff2a421e16133. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BC3PG2331430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b87d9b2e7015fbfa6aaa5c499bfaf7f95a41a46a1a8f90292d64f2cddf4528. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BX3SG2300374.
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