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 0x21858a59141b4207d9350fbaec02c5c610b90a676db5b052cf3aee4afa13800a. 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/c7ad97d6-a526-497c-b47b-2daaa224c81b.json and https://artists.proofprofile.net/proofs/artist/c7ad97d6-a526-497c-b47b-2daaa224c81b.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 0x6ac94f181f5ebc39a8a9e68eca1b70e36f49ca602b67f234dc47c59c2c6e8374. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBMA22038261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cede48eeafdd5aadab6f03177463cbeb0c526b725cf6f37e9a6cc83b5bb30fd. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GX53U2072182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8972726ad4d657b5d10fbe9a1e0886c3ef13a1ae5ef1d28e0c6c308a852ff1b5. 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/GBLFP2222631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a3db7d3906c8ac0be90b1741de5b3cb78e13bb327fb3518afc4c3e42784900. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX3Q92322848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88eca0561b0d67b9c6a51c6676bbdec28c08b9de742d27223b6a103fbc32530. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ZA2EI2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cabddb759ac84ca18279f7b25ab937f37623d5767a8c650c42fa6f8b4701e4. 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/ZA2EI2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480ed29f6eeaa5a3ecda55d2ee4cc944f335acb6133111297bae5eccb4ecaa35. 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/ZA2EI2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf21227648ec7424338b9d1723537292a1bd14d2d696081ca147862b43a6f7c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GX53U2396901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d161971374cd907300d4220d9e31517cfbe37794ae1db2e00a81dadc1cd28f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZA2EI2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4e52346f1b3475227ff4ce65c34146f1a4a2e17e6d081094941689abcfce84. 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/ZA56E2527959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf031eade0a176cd2617e45633eeeca5dcf0ebd6da8cd63a8c6aaba120ddf621. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZA56E2527960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32fca12532f19be3e9338d04e9bc80dfb9cd441f3ea67ec3550de6d470d2317. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ZA56E2527961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6167f299a0ee5d9afc9067a53869865e14d2c3073e44485eb1c4185e3fb1e3b7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GXH2J2536349.
Monateng (feat. Mhaw Keys & MuziQALsthesh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64300b551a9774c7c6e6cb462278ac36527de00cd9fa0ba93f1c81e43ff778b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SE5BU2302325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1366069d2ae2237a9992a76da23ede3fb251f8cbd6ee79ba33b769b4bf050826. 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/GBMA22099811.