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 0xecd7d17d9b0d9dcb7e04786e417acc5d61bdfe3590a7e716d8eec4acba50e06c. 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/4f69b0e1-651d-4b94-94de-c51b45f99d27.json and https://artists.proofprofile.net/proofs/artist/4f69b0e1-651d-4b94-94de-c51b45f99d27.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 0x23d3dc481e29a435475757fe87ae15f996827c4793c8b0a764bda1fb2436f83e. 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/AEA3A2172362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e3f6c0f2942ae3b2b4392cce62b0679cc68abfb4a24476d6c62052d68d1c72. 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/AEA3A2169945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585c6aee8b36d0ed7cb0b981366b43deb4b991de16d169b8758ac723a44421d5. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:12:05Z), 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/AEA3A2167361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3742d581a04a67b3151fd9b0ee513cca9f971b109f9aab6543e564dbbe42a397. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZWFK2507157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ea0d4a7822539812dedb46d9541c852374cc7aca422b61e36036ffbccbbd78. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFK2507158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326ba608fc7e566769a8691e4ac94c2e966d30ca104f70a34ce9a9f59aab03d9. 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/QZWFK2507159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885981043b18f30095aa8e0fe4c880bd0351dc5983d7ea89be06a8f9266262c0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AEA3A2139102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92ac4f7b89581d8bbf7ee1d1eac949ef112ad4305e930950cb447eb45bd6772. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AEA3A2137934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3558be896771a2c8648a8420aa29e8be6c65acabb9ed9a2f3a4f2d1c8108b732. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:42Z), 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/AEA3A2177038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf3ece05e864b1cb8998e4a14c458c8f2c53cfc04a39c5e4f7e751918ca581e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/AEA3A2173635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5569ef4620f60808c601f84551e194464b354619d8ac13ed7293811f0b43593d. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/AEA3A2158191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9729d0e06bf58fec3efb1366fcf8ad9dc964da4635eef87892dc78ff48aa4a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AEA3A2559822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e95d0821a23639d66a46c855c6b3eba163b8d6cb037b584f8d45cc4e611d41b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFL2537733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e77a4945fcaefa00b62fc49cf1bbbc6adb982752f9d7a59c03491831ac4572. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NL9KR2521530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dac8faa613a38a977de5cc0f6bd097591d07bf38d8113d4f7942761b8f0de4e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NL9KR2526486.
ELA VAI SENTAR PRO CARLINHOS MAIA/BINGUS LABUBONICO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af7789763fe7fd49ad51c0da8b9a2ebf18be307e0d688b5cb857fdc056afa4b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:07:36Z), 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/QZWFL2548122.