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 0xa4b59e1ed8273bcf392447132cd2399cc30f9d2e7213e2d06bb1d791423c9c7e. 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/02f4b1a9-1838-4777-871c-1435e34a6583.json and https://artists.proofprofile.net/proofs/artist/02f4b1a9-1838-4777-871c-1435e34a6583.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 0xb57384aafd61a18fb6365d5c14bb79c91b7287483df644a8581db76c0c7b2dbf. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/FRUM72001067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ee30cf4a266ea84bb29d0fdfc7984d6f62cc92bd9e577fb565af887895104f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FRUM71902018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edb32715f94fc08ff3932a9e98fead2dc0bb4a348e661a0f0ee85dc3b78e1d1. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-17T08:48:38Z), 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/FRUM72001572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96740316ed224b5b31a2a8b3ae46169934633ffeab1a1187d799cae4627811b7. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/FRUM72001518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa45c55240a43b723d001b043bd10e16c6f2e5b057616572b5bed9403485d0d. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FRUM72001520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664d2f1cbe71785c4b92d4bb0050bc2a44c8fc03f63271e7fbfdd7aaa4fd617c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:15:23Z), 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/FRUM72101084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee059f197564df74d584331c9e90bb6f06cb0bbbbbaa2de123c0665e9970a037. 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/FRUM72101087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa583cc8aaea4852e8479e49b5b43ff3ea96541af3e576d4bd5634ff11d64e4. 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/FRUM72101088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664d2f1cbe71785c4b92d4bb0050bc2a44c8fc03f63271e7fbfdd7aaa4fd617c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FRUM72101084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99dcc2d779d15b3521bc4dd098b4d9c1db03edfcf80d6b9e470c13766f53b46. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FRUM72100921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0c34b92d6f7b4bc1bc6b4802b0869288fd3953a354be015eec715f6d18c25d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRUM72101091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96740316ed224b5b31a2a8b3ae46169934633ffeab1a1187d799cae4627811b7. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/FRUM72001518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f16b18384083297a3077fd4a79fd1b0f6eb9e3282e544b8998ee8a0db28a60f. 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/FRUM72101085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edb32715f94fc08ff3932a9e98fead2dc0bb4a348e661a0f0ee85dc3b78e1d1. 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/FRUM72001572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa45c55240a43b723d001b043bd10e16c6f2e5b057616572b5bed9403485d0d. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FRUM72001520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2d15f7bcfd199df18d7603bcca1c3bb595de3eb62a35aed0171afc4d4d664c. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FRUM72101086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa583cc8aaea4852e8479e49b5b43ff3ea96541af3e576d4bd5634ff11d64e4. 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/FRUM72101088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060bf02f1112d1bdf33e14e69655465361e47737565128c287a2141952ecfe3a. 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/FRUM72101090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0c34b92d6f7b4bc1bc6b4802b0869288fd3953a354be015eec715f6d18c25d. 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/FRUM72101091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202a718bdd070ec31d6d276a7c95a74a76cf525d6ba048b086d5b233f1e92fc7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:12Z), 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/FRUM72201770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdbca2d9207fe57246ef47f2492da768d2d30775a7b690115327b2ac9c4d974. 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/FRUM72202492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dccfc8aa46bf955f92db247d58e872b9dded9ecacc2a2c07fc90b90429bcf97. 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/FRUM72202934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d35069400cefa6fb77c7baaff5e6c5308c4eeb21faf2593d4c60ea7f2a86dc. 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/FR9W12522384.
Apparemment (feat. Xina Mora, Poupie & MC Buzzz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d647a034783fdb021d3ccf32745de034fbeea23cd11dd2c2fdead3f2476161. 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/FR9O62000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e29b1f476dc3c2ccb8583f1f27f8605eb7e9962cf5fd8edf897740642bfa743. 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/USUM72119969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edb32715f94fc08ff3932a9e98fead2dc0bb4a348e661a0f0ee85dc3b78e1d1. 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/FRUM72001572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0e5ab526ff3d58ec38f35e5766feeff82940d5d12a68fd9828e0d2def539f3. 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/FRZ052000390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0e5ab526ff3d58ec38f35e5766feeff82940d5d12a68fd9828e0d2def539f3. 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/FRZ052000390.