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 0xb41a66f5f2805f5e4de9c951e0181da0027e242e3af7313ad4a1fa6a28936b8f. 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/c64d54a0-bfce-4f6f-b8f6-ed33150f578d.json and https://artists.proofprofile.net/proofs/artist/c64d54a0-bfce-4f6f-b8f6-ed33150f578d.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 0xc8fc70217ef8936995ff4f12e515535019aa48dd4c992a93ffa0bce46d488118. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:07:20Z), 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/USESL1713107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd767afe95adf2f41bc3b86e2af444da98a85b63e76631a7b6241e1a5874e44a. 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/QT5EV2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696b1a3f85e2f95caa79cd22b821f80e9c715dc1ab04da556d0e75bdc2636f8d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT5EV2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5dee47f78e8429c62880336b8c5edd060861c9875d71fbfbedfa26804c0d05. 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/QMLD61408249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c9501dbbb52b8e5ef7d9e23ae52a489e74f2478bdd503c1f731502eaf24549. 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/QM4TW1972988.
Heaven's Gonna Burn Your Eyes - Symphonik Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18df317734babd9775484546279dbc81ac31801b30ec289a61674c736035748f. 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/USA2P1950452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5e2a19442387c0da362d445bc0e178e91dbd4fc299aa77c9a82a669fe56575. 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/USA2P1950456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72ad9e288261e032ce34663b9c899ecab203152e63f42ae3f927f9c83e0898a. 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/USESL1222008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8648c9293257ea2070ee8b3cf1e0fa2d8f03d80bdb5f2677e9b96b42ea9e5cd. 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/USA2P1365411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1773aa792c4e09ca2a4e9b58216f4d020e9ff76e21df1757ecda6a57e7c04765. 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/USA2P1365414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd8eb969cf2aa3df51c416008d06179c88f033e94ea318529db70e2ad7f974f. 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/QZ5FN2417447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455d07f5abd2bdf457c008132ca5d26796e957f0782335f8628f5e3f7cde60aa. 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/QZADU1809102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5405da0d3b4246a8c7c462d8d94f02a5d0b81cd0d86a9982a59768afaa47d96a. 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/QMBE21703202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ec4f215306ecab975e5511f402e399880476e6990e886ab1db4b455fdc4eae. 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/USWS41717203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc521170fbe6c551bd114cf122ab9725db7df9773894b0cc082764e0d8403ad4e. 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/USLZJ2241024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3695b6e55a5e52118d3540dffc756f8da02d41060e0e65363c0da87caf7a023. 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/USA2P2329769.