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 0x9a205dc79ef4aaf926679844ecbc1be1bc3122568b1ee3873a095d0ca57eb7a1. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5e2fef1-24ab-43c3-8cdb-729c3499645f.json and https://artists.proofprofile.net/proofs/artist/f5e2fef1-24ab-43c3-8cdb-729c3499645f.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 0x897ff7c566dd503c27ffba30b464c77d2abc03b4e8df738cf788d5b07423b699. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BEC262399801.
Die Stille Totgeschwiegen - Grendel remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf975ad95c54247d0be9045a2f1ce2dcacb260ccf949ea5505f583bcfd1c783e8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEC262399802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a03b1649db57cd70f22faeccbf6566506948c9bb4135dcc27bab89266293f43. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEC262084002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56918c99552e3709a04e16deeb30ceff18843739ea360c6ede4919ea066c40d2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM6MZ2420909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6b75e2a9bd6d0dd0d1ad6836d92dc7acc51282765ade68e1c132c23fca98f4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6MZ2420910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36b4b87b1626e1ff2181ff84162a1032002d1eef7f4bfa1bfe4c1962cff352a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6MZ2420912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa911d0efc0a55a540b8ab94ac1d9e7fb9eb8891de9bffe6eb56583f71201df. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QM6MZ2420913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3b19240d69b1f683db945a9331f6e073435955283b540b4c8e8ab44a7582ce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6542233193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0f82b3e7ec0fa568e6e3be178440effca64f5762f6d1f5450e16d38441b57a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6540888428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e6a077eab0748300f633ec8718e42fbcf43946c6b70251e001ef68e130eab3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH6540839093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7980a7f1a3e67ebcf53207e9bc5ac66a4d7ebaf9f4ca6da40beacad3086569. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH6540839095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57b857382f5614a49a3e7733a32d47bffcac61a5555bf93cdcff46308a1d386. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/CH6540801494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0393b1b59e69492d3db8dfcf18e82d58b90a517816f7535ae386c72d4aa83ea. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEP890711603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faa08a6a4ab46e1ad3f438f392831915be557db1390415b8999a99ec49ffd1d. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DEP890711607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b729ab69c195c3a2259edae203af79c99957b062342e4fdee82282f544e5657. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEZ650701942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c7d1ec531f8d73cc83ce659f80f1684d8ed9bb99b8898c3038139d21c077e0. 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/DEZ650701948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d6ec12359ca3b765bba126c421712978c23d5cb0a403b02183228a28b9bce5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZ650701952.
10 Years Bat Vibez - Diary of the Infernal Gods
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138e26f78d51e12ca18a9e34f7b7f3d81148ecdd8677a933428755c77a56ba59. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEP890711817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccc347928a3f94041d0994327580e03fb5cb8ff84aac163f68e29ec7da1a60a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEP890711818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b103b9f949437a743053991a2ed6a082bff78aed06d5c1e0a58fb19c156f191. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEP890711825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fac3799570d4c3fd89a5500f0927889662701eb48521209ca56cc552b89a48b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA62164701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38059a2dc4df9cc18d0f80be11aa9ece48678a2988ddfd45ab3c26e4e74c033c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR6V80726202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ff596b187e926286589341bbd8c71232150bf26079f175327ff4ae18559a10. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR6V80726207.
Light My Fire (feat. :Wumpscut:) - Burning Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0e5697bd4853dfecc2b1e90ef0663430100dbb53273b88beb10e1030e34fc7. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/CAAD21010913.
Zensyou66 (feat. Hypnoskull) - Oldschool J. Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1302b12a8dab405e12754a6716374ca0780b8e2a15e2cc1793caaaabc687106. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/CAAD21010920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7143fd5a0e27908d3fab49bf33c2a03514cd4ac14179121e9b7c110a72eecf. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLW881200022.