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 0x83865694652a93b88d6e82846ea2f40a491489e26c77780a27b2bf0412213927. 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/b093e7a1-17cf-4061-a17d-80f2a9f0418f.json and https://artists.proofprofile.net/proofs/artist/b093e7a1-17cf-4061-a17d-80f2a9f0418f.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 0xc90450c24d54bfad6644eb14ea9a0018358da60075dbb147592cd934374f9896. 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/BXG9S2100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce9b8b3ee549b5191b4079c753dcd264a5298c5ab6720fd78d15ee8d31571cf. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US83Z2203052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed61b4197d57d73d2503f9eaa7fc7575e9f0b9caf300b94f1489462ecb26425. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/US83Z2203053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22f25bc80e70e5085e394a6269820bd225bbb8751f28362965fdd1f4889c689. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEZN82114532.
Brazilian Groovy / Papillon / Beautiful Dream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173c1aab0d09ca7f4c742ada460d883b8e4040102c4a26d54539550041c0ca62. 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/USNRS2342618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31647104e7e626d532f1d914faaf7317266396473f81cf6a588131b15dfc16fc. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USNRS2342619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f775c9f4977db5e5da61ef259b64bf93b7ebb8f4b4cc0ff10b591b9a9cc76c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USNRS2342620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea47e4a32c5bbb6cf9a30a287c963d94525edb924c1deb7429f55ecc16c2118. 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/GBJX32378049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0410b5fa8cc82b09fa28dbb0ab3b1e16d159e2e20cd981cb7775cd2fec507a7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBJX32378050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4661c71f06c3953625e965b070eedb6267581d370ef98de960a4f78660ed6b75. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITBHZ1501040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10036d3019cf7f0f55a071675c652b3baadaf290480a749da8bab1856162c928. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/ITBHZ1501041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd495f4789aead53b35daff23d2a7a1cdd6dd9e293ca83529c97558676f35c1b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBKQU2478242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf7ee67319c93995a10b523a88862745f03f1f72910bf6bc4ed902edb673365. 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/BX0BA2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7013ea7381c5522ae29f518df77b3ccec589bdc81fd55099c4a17d1c796cb894. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BX0BA2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7013ea7381c5522ae29f518df77b3ccec589bdc81fd55099c4a17d1c796cb894. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/BX0BA2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf7ee67319c93995a10b523a88862745f03f1f72910bf6bc4ed902edb673365. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BX0BA2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28205b45d244f6e4ec71ed9730f3afe84b688b2bc825ce9b8808866756f2f14a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BX0BA2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b44fbf40dd920a8e0afeef6dbb452dd038484ea3319db7c7d5e2ab6ad8c147. 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/BXG9S2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9241a973794b5a6ad87cf65b884e072871b0e9b1cef382e5c064a212cb5c7210. 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/USNRS2141498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dcdc193e98827f977f97e1b7a389276dc06a8af1cc32037b9c4c97796c1073. 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/GBKQU2246561.