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 0xa1ac5eb145c02690e999a077293a3134f0ebf2b27104f31512a75899bb599f37. 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/82974ee4-f608-471a-847f-ad20ec403d72.json and https://artists.proofprofile.net/proofs/artist/82974ee4-f608-471a-847f-ad20ec403d72.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 0x6be3e06edbf8a08428ab1f597da1fac7583e45aae18285bf994e4949787490b7. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BRCMP0300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf0fdee75f05b89440294ed0c1fded85122a75402f2337a17ce01109a7cd946. 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/BRCMP0400487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3589fc4ab7cb4496a9e142e4d4457b5d7c49566ad633ba87ce8f0b391a2763. 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/BRCMP0700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8ca201a4df9d06e6beba896b56c3bd99500da7f0be611435fe9f160fcebe1f. 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/BRCMP0000352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b755d2a5fb77f26ea7970b05af8820df58e7c30719fd630f92348019d03838. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BRCMP0300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9beba9ed5983811a366dc94863810a96f7e1fbf7bf3172a55b68d725340b46b1. 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/BRCMP0300543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be3e06edbf8a08428ab1f597da1fac7583e45aae18285bf994e4949787490b7. 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/BRCMP0300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5757cfe818bdd5b616cf8ef0870651079b5bf186fc8c8f5e2cfb8e2f8a5f122. 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/BRCMP0300551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74ea6954e1ccf8b6b7bfc331f689adb7ebe55003b3eb8cfb0f070d842737aab. 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/BRCMP0000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25467a64b66b6028785569a1c49fdb98f4cc2cde837127ae56851e7a451fd1bb. 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/BRCMP0400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6759572fe1251f55086ada6a2469312387ea8128c43fa03723f5dd4712642c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRCMP0400293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d00071702c6ca95be98566f7c8fef9ac2a74348460459c29e37dcfade4b9e43. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BRCMP0300549.
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
Agnus Dei 1996 (Forte e Poderoso É o Nosso Deus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9963ea99bb7e5a756a6d54dffce5978304debf3e1eeb6bd3841907eb8712a7. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BRCMP0300586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f47a635f9992d7aead8717c5458d011dd2712f4fd31ad5a57db4af2f71ba02. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BRCMP0300591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca6884be5500dccf455a815d3e5f095ca4937e8e9190b2e8f2b7cef9daaaff3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BRCMP0300595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dd70f591fbe1575c3a188011823d829359fefd99185aa9b4e42af0257b57d7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BRCMP0400286.