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 0x8702608d483faf1d8bce9e2997d661983bf61c8c3727227a70b2cc88438fe866. 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/d5775f62-cf9c-470b-8a97-bb3c8f4267ec.json and https://artists.proofprofile.net/proofs/artist/d5775f62-cf9c-470b-8a97-bb3c8f4267ec.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 0x7e0a496fb86c6c85114e10a148d68f9f71ed9cabe150bc3b2919b022bc92d1b3. 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/QZHZ41944730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb515be78cbaa338b644a3d5366afd766ea003fd0a717c74c2644ebe0805d6966. 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/BCP0O2000001.
Tropa da Folha (Zatto Beats, TcheloBeats & Sidney Scaccio Remix)
Dragon Ball Gang (TcheloBeats & Zatto Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53dd5e41b2d081317cf0647030bbb5ceffc31916823dd94fad9b94798f88574. 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/QZTBF2335264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf288165afaaea8d04034befa13535185fddcdcbb55fa195b42fea3889a24d875. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZZ7L2511732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b9c92059e45af792512303024cde3064b0b10eb055e691904e575821a9794f. 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/BCPTY2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03900545fc239de8d5290bd1f66bc3c9118e79fa2ead12dfe2c521261f7d709e. 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/BC2GV2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08124a8456695953d165d7ac49d531a46b4b5976c0a434a9ec279d236661dc53. 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/BC2GV2400005.
Flow Natalino (feat. Aklipe44, LinoMC & TcheloBeats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1f1213a3f480089d13d740a2a82f9e83c61dfbead9ebd501224d64a81055e2. 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/BC2GV2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab9162a8f53b74e9b5b025199bac33f657ed52b0a9a7703da0ec8a660d3fc0c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC2GV2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfe95dc426184f6b82e2a5532b0e9bb6dc86461e44a7ce7ab51db7436ae318d. 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/BC2GV2300001.
Flow Mexicano (feat. Mikezin, Greezy, ÉoDan & GRAV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fdc737ea05821fbf48df018f5943aaf7a89dd1608aee6be86d65348f6b9e9e. 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/BC2GV2290003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30da2da97f693479517def9da200e9aa598901f27c709f1c84aefdff9033fbae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRGRA2110004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa995410eb625fd64156672c8dd01221b09a4ce10c6de0b88a127af9bbaaca564. 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/BC2GV2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89292110fff16f3a32a17978ab7a1a5ea2de8c495af372b826290bdcd5ae40b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5752102975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f7783ee058ab8f588654af30bd617b9f6f0dd9f99e0ac6b7ed9de0b3906b20. 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/USDY42153638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec409f2e87820168f18e99443878da14b0c9460e3c9e6ff679c0235b8f5f40f9. 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/BC2GV2400106.