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 0x2af18fc9c18af269eccdb2f1af6be1810019e1a729ed5a1d63b95dc02dfabf34. 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/755328c2-5270-47fd-ad9f-9efd5e67cd6d.json and https://artists.proofprofile.net/proofs/artist/755328c2-5270-47fd-ad9f-9efd5e67cd6d.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 0xa56b631c2b98bff2f345b0517d6daacb98ff5bd61552aeab3a76d4fd02eda85f. 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/DGA092393322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a055c409d05bbe4f14d79fa984479e288ec921f7dc00d1cdcbdc00d60bf2f61. 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/DGA092393325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb439acc1222c3f9a2aa7c532026d87a842a38faf174265c42e55db7b678bd542. 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/DGA092393327.
Conway The Machine Presents: Drumwork The Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd841141403727b8e4f0cf36c6aa2e6edbbb033c85f8199d80188d3a606dfc00e. 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/USUYG1493808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c247534c05154dd02a1bca5529ee4a267703affcdb8df039eab2487df940c4. 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/USUYG1493810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49805f28d4f673cdd7757bb6f65d23b11c83a21f6c4f2cec93ce5b87b40f85a6. 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/USUYG1493812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85530859bb82d83118acc9dc6b017e93578ac2fd1fd05acee405257f45f27c6. 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/USUYG1493813.
Elephant Man (feat. Heem B$F & Rome Streetz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca761f9a2c74ce39f282e50a746901890744a48cc4531ce64606e67674ae0ce. 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/USUYG1491984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b9f875737d6a201d72bb842560dd2c312c88f5aaafaac55d0b5bd30eb7ae00. 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/USUYG1493818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0a7ff2fc08b21f69619ff393fbf0af5b11581aef3f29eb3868eaf919d1b01a. 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/USUYG1476845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007a48692a45c10865780ed2722b9690ff7846cc2b0418bab571993d975dd696. 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/USUYG1476847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d29a27175a937d425d4eab74c4af9d13a1d970a6a9f13664dcbf183332f9946. 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/USUYG1476851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a055c409d05bbe4f14d79fa984479e288ec921f7dc00d1cdcbdc00d60bf2f61. 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/DGA092393325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a055c409d05bbe4f14d79fa984479e288ec921f7dc00d1cdcbdc00d60bf2f61. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA092393325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a055c409d05bbe4f14d79fa984479e288ec921f7dc00d1cdcbdc00d60bf2f61. 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/DGA092393325.