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 0x3110ec90584c2cfcbf3e7725bb84d7a8399b3566421a665cc637c64f70a5b6fd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bb3a63a-a6ff-4ed0-9ff8-cc9f3656af08.json and https://artists.proofprofile.net/proofs/artist/1bb3a63a-a6ff-4ed0-9ff8-cc9f3656af08.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 0xcf834eb46326f2b6635c575d73195565a7f6f2b5a13545f94bc02968c97c095e. 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/US7VG1717415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0511f35e0299a52e4746077cf1f307a6e9d6d98d3e63e4531077381c132d0de. 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/BRD1E2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0511f35e0299a52e4746077cf1f307a6e9d6d98d3e63e4531077381c132d0de. 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/BRD1E2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17810ef7f9db8f06ebb2bd99183b3cd45c6bbb063a6d8f14e280e1a585929df2. 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/BRWMB2100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853fe512dfaa5aff5fd6932050658234bf98b54c31d25773d9a61f8236965afb. 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/BRWMB1901124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4ab959b997d41ad0a80241999b8ee220285c5da056a0418439d6b21cca5f05. 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/BXPYA1800050.
Marcha do Remador (Dennis DJ feat. MC WM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc107dff807d063e7745a044be2ada6be2417409fa554c1b78f3215bb9db24736. 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/BRSME1800154.
Toma E Depois Desce - Ao Vivo Em Maringá / 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a27e81e8bf44ea39995ea31d19c80cbfc6da27684ecde9cd54532b184dfd76. 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/BRUM71902898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4ab959b997d41ad0a80241999b8ee220285c5da056a0418439d6b21cca5f05. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/BXPYA1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915bf2f5f48450716b529958fe72f49844664f6fea0c6f93ae80c8ddbb3e7958. 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/BXPYA1800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa940983953f0497f9c29b81b074be9082b3e517083f46554e532240efe2609de. 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/BXPYA1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d763fe41cbfa742a7b498f3c69e22100c22ae7f7f252897e829164b3837c6e3. 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/BXPYA1800169.
Tremelique - Batooke Native & Flying Buff Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb6f4799a850cd091b593e2b30c83ba37885238c8bab0f414eec22cd93f349e. 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/BRD1E2100055.
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 0xb6aa46d06f63f9ecd551bd4402278db66985cffed83e4e8ef0b34bf51117ab83. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/BXVK62400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c328764af13a92faf6c3ecb8ce9ae9e06eeb0b96e9c920a617f0944febe194b. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BRWMB2100256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf375a7b82406ef492db69d1272a7a3e05712d635f447005ffd4a7347784f149d. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/BRUM71900606.