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 0x332e64de36945a15a48cd3b264ba68502d172f6fe5d09a85d238e8f85b485507. 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/5eb26847-4f08-4c97-b48d-202280afc3e0.json and https://artists.proofprofile.net/proofs/artist/5eb26847-4f08-4c97-b48d-202280afc3e0.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 0x64188e5716f4b12becab75a02e848c391fdfae2d6b2cab9c222f615032ab7966. 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/CLEM42100989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0096c8d3f1aa5fa2e224d2d286a2e83006631215653dd50de1e977ed85cc2d. 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/US7VG2341280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64188e5716f4b12becab75a02e848c391fdfae2d6b2cab9c222f615032ab7966. 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/CLEM42100989.
LOUD (feat. Piero 47, 3TRIPLE J, JulianoChieff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6979591dd06eb7f4ed5b69d54252cc3fc83f35ae380365eed7fdfbc524925e0e. 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/CLEM42100927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdea0db793d38db7f74f90737073dcf0f18ee04f452a8eb6470f7f006b00581. 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/US7VG2363150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52387d731a7323fa22f8750cdddc6d078ad17ac19d1e6b56f29848d4ec62ea3. 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/QZNJY2438342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ef056b5fd0a3646bc7ecd9dda934fe777301f9a6b884f6a1e58e9645427ee9. 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/QZNJW2429623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6a3856e2c5025c5632c01d196a680619b1d7e42d6a9bf9de9338b89bb55cdd. 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/QZMZ92370801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379d7db60cfc9b46ecb81ddb3a20a691471688fee3afc845a7e7796929ad4d2a. 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/CLA1D2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6eb771646093d4085dd5112c25040f0b55bee4c66348c5ac5984c56ca93eba. 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/CLA1D2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e732d19706dba9f335b1a218fb6d99ab3fff8580aee1755cc7cee03d4877ad4. 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/QZW9K2355631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d652daf5f36555a089f693e5c9e1d0d8994c45320cc6e852edec32e1c84f0a6. 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/FR10S2403604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56de3511e5ec2158a6e17cba197231cc560f17311afc981898ca87631c80dc86. 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/QZNJW2492915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d86b5fec30fc924800246ce6a1f6a75cd80e1b816b130e02a08aad25d772b4. 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/QZNJX2465052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6699c71bc4bd6f44ba19c93bb5c98a689009f0c88fa0dc436b8c6dac5be0ce. 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/QZNJX2465051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4113c8b285d9634fb11c14caa1840b2c91ccebd1210cd2267b987bda76c07db. 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/QZNJX2465050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a57c0a97182fedfd17de016a83e77e50fc758ca5a408ac0b58368cc7600e4be. 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/QZNJX2465053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1df6145755ffec2c3f39c4cbc629ec8c138a399b6c38213f44e1e06fd412070. 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/QZNJX2465054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2336e1699c265cd4035c02b4e317f4e148cc259779e382b41209ddff34be304. 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/QZNJX2465049.
Criminal Activity (feat. Lil Snow, Il Nene De Oro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cb5f98fca90bab18945ffec245f2937aa66c0d9f428a6174b0b0cedeb9f3e1. 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/ES5152401281.