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 0xf6d75a497870b782311bead3aed0feb583545e8a41bb41412aff876f9397aaf6. 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/e596ef2f-e1ab-49a6-8234-4c1bbba38689.json and https://artists.proofprofile.net/proofs/artist/e596ef2f-e1ab-49a6-8234-4c1bbba38689.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 0x4fd1654b025b546c282bcf846a69e16318bb0c0025308e17d9fb20bb2b33956b. 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/DEW230506601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b547628db6348a919a91e82ccf3519491bec64bca7fdabff4bc35c437a6b40. 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/DEW230810071.
Maid of Orleans - Happy Vibes Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4ba408c83b6b4d1aa4caa55b81618fa4bd118baa274fea32a46ddacdaa53dc. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/DEW230910103.
Maid of Orleans - Original Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048b08d0141e8ab9ba8d2298c735af1abd6f52436d6d622875a1072e7d887baf. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/DEW230910104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c7a3a8595f6d637f8cefbf7699d8dfbb35ef9c2252ffecf4b5463c0774f42a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEW230910107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9110ec535d88624457d4cb5a66dbb5d5e2313f7b08e391ea9f7532ea91d96e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEW230910106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3066eb99e2509892e16cd27640ce9f69791fc0a6a13253476b985d85d327b3. 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/DEW231010288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabc1d30ed3b4a6f98d1758032b825a9c375987f918e74dbf5b30279c74e7221. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEW231210387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c7e7e80ff34108f4d107273eddd37645a3166ab82483c65a9d657b186f5f55. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEW231210363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f4f6d99c19188c13b933f75d9327810c966080280e433a662bfcdef3e5e0eb. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/DEW231210366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40f60ef92e701c946230bdf20ba85e9e2876402d5fa5cf6280c23959e8cd98e. 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/DEW231510464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c68b251e38e61fdace18f0036be7a83edef44953209e0abfda9f8669910a12b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEW231510458.
Nachtschatten Megamix (Mixed by DJ Infinity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fe41c7e16708084fac13f8ee52763542f85e521b0b5ee4eb5b7f9253e26602. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/DEW232010604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1279490fb59a7ed5bda41e4a177e5f54d8f9ecee86d2cd00e9330d64c34147. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/DEW232010606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b8921f568127dd9d2048afe69dbeeb49f1850d99b414480717109ecf798335. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/DEW232510624.