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 0xf072d0edc79a562a7ecece5886aa51854c541f5991cbd013a78a8b80b603c6d3. 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/4466cae5-01ec-4b54-88e3-e58e4ab16611.json and https://artists.proofprofile.net/proofs/artist/4466cae5-01ec-4b54-88e3-e58e4ab16611.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 0xe303f2fb1d6e934ef6c157daa5c435f1c9ae40cef04c968d56e6239ca82460bd. 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/BXKI72400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb819fcae138d3b506d3d3528e915d05f549a968e9c918701ead6b675fb7a6bf1. 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/BXU831700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed2ef0fd37709ce36571a9b30eeb78de32c9018b72fdce82860a5a0047ec237. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BRSME1802388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc32f914783a1377bafac7e42792e36a4e2da1333203c237940f05a11bfa5b92. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:38Z), 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/BRSME1900283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85fda49c210fc232f237660f82c3cde564004c59d84131aa148c9428312e4d5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRSME1900286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6239191458680f926c9e5d7a6d81b4975326fb63bdd9594b24ccb94f8542e8f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BRSME1900288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a268bc73d9137374408622e21ba7246e73b189bd5f9df6d8bbccdeacbb4d09b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BRSME1900285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca7e673ce87696060f481e738c473f1588bae0659f0ba041cdb4f59393a44ba. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BRSME2001459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe454cd9e56c507576f89cbd7dea399619d28923ab9e885d0072b777f7d6b2a4d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/BRSME2004002.
Maravilhosa Graça (feat. Rebeca Carvalho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb117b77ba4df5f1e40b5de33af26b260eb1472410b8ff8846969f7351ee78edc. 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/BRSME2004957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026ef517438f018649715fa84caa9bb6b7a81a636641eb645e423e2c6bd9aca7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRSME2102486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa898a694f50a5fcb9abe89baca180f6a51ad5f823bc5af58b2531dfd5f0e3c7. 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/BRSME2200784.
Se O Mar Não Se Abrir / Citação: Firme Nas Promessas (Ao Vivo) - Playback
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ceb93f0b5dc7bf56a8a30717bda2a55f60fba2ea45af5c689aefca2066dfb4f. 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/BRSME2300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0440ea0f889e166b586f39eca569bae2fe382a1cad102d13155f1a2bccc20f1. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/BRSME2202141.
Kemilly Santos ao Vivo em São Paulo (Playback)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ceb93f0b5dc7bf56a8a30717bda2a55f60fba2ea45af5c689aefca2066dfb4f. 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/BRSME2300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22506394f80bda1565929d1c14251fdc628371dcf3a15eccd72252481ca82a8b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRSME2300632.
Se O Mar Não Se Abrir / Citação: Firme Nas Promessas - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087e950c7c0c06afc47dccfc3bf38b83de12b721e3c2abc98d468476273887a7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BRSME2401084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8c2bd774b69e607a4c42b6fde8e546c0e1b09f5254406ea7a7a74a77136370. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/BX44O2404415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb893b1a356104a2125a19e92237f386504dc9aabca83dc6cb7edcc94bea76e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:07:51Z), 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/BX44O2404749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15741b52446c8806fe34356a191801bcd134225f7963bbf83273a88050d54e73. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BX44O2500656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b418cf3546a6f736f7bc3bd0657d09e1a8d1fb87d8e3abb30c41d98a1400db. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRSME2202147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad7494600fe6f8ed63a407b47ba94d9fc7fdcacb6df8f81bef2c3dc1b749315. 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/BRSME2202149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab071cc5017c86410e5ac8b353243895db1b38007bf307e048e0f64aea7c94e. 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/BRSME2200129.