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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cf3c9af532a0234f7915f8600f32b3a21ffc9353a35b1be48210876cfe9d2b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67019e2c-62be-4e8d-a203-0097e96e0733.json and https://artists.proofprofile.net/proofs/artist/67019e2c-62be-4e8d-a203-0097e96e0733.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd062e623147f0adfadd08ca3217e041c2aad2e610384006b6dfd8b2412f59d0. 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/GBJAJ2002513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f99b5c7ac412edd29833b8ecd153592f6f656be40ab71ef818f47ce99927138. 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/GBKQU2439373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6fdd49b782f80eecebeb7b7506c7ffbe0ae0d7492804c9658a8a83160ed427. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBKQU2439374.
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 0xe2e29787d4d9e8f61aa841c615b39b68afb7da70a8c9446e0f9461225a96a1b4. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBKQU2439375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fba986c6990af968cd108945a69eac9141781ac6303b02737fcf332f475b891. 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/GBKQU2439376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3072feb733ddc07e4884567ad3b20851a505d5512e6c42461bdfe576a79cdcd7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBJAJ2301176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dfc3072596999125961e11cc5740baa8dc7bb016508b5a29299263e1b27369. 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/GBJAJ2300365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc44a62c899f7f5f23eac4dabb4860a45dd4c4404090afc38d3501d8e2ef8439. 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/GBJAJ2300364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb96e3ca461af5d951f791600d9ab272814d2c5cc52836e13eb7ef3364682d84. 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/US83Z2231596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc6daa17d7d5a453170a810ef7521ffe2f1e6e84710a18c1ac84edf7860a29a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBJAJ2201267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8092b87b7381612751d0d839fb193b0b52baed1117fe813072072bca81af02d. 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/DEXO42221593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1c6f48e0bcff1ccf68fb857d7c928f32cbc3f1511efe9d46af664c04a7f1c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEXO42221594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006d3da94f42b2ac5e272663ea8159cde98066db66922547a63cace5c3bcd19e. 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/DEXO42221596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87443f69db1ed8cae5153cae1923822e11a1e8eabfc0e672c3e163e61dc995e8. 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/GBJAJ2200912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ce20b24b423514e843792de8c6e2b2b5879e066fcdd5ad5d31abeb1fc082ce. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBJAJ2200911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa260f59b67a2dff763727cf3704f2848e9216f603026b6f3129f0deda1a30652. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2209321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b75977e37b1b72a6b32e946961913cb2c87f0ec98f91d10c29332794ea522d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USCGH2290208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67dcabef06de61210686315bda9ea89e4d3e7ff3113a6c56ad509e6e3c7490e. 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/GBJAJ2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aaf742b087108fb3e91e3f6d210b51980977c258b8339dc9fda65a5d0fbfd7. 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/US83Z2145729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf512d4b0f95b37a18a86cb9d1a71ee2eddd8f2652c704897542d0ca35567fb18. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBJAJ2101270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c4b5d8730f45763ffc7229cefaf27e4c14a6b1939509bcdb21b9838b8fa376. 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/GBJAJ2100848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676b4dd96d29b9e505c088c42bcfdf8ee98fa740687a0a34397f0039f8549c04. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBJAJ2100847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f7076b336abf93bb1016670060c145cd1038ce8b4e7036752a97a8f5e045c2. 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/FR26V2034738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ff7f5c55e987a671c2a1f486cf4a990fc06decba73af87df9276f9f4a75e65. 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/GBKQU2064607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ff9052d2b9029f0a6a10d64263ee138948171a12b769c08926a665ab0b9860. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2064608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b404b0537c7f1a14370efc71303d891d28fc35a97344cdcffe0ccfc0d2a79c. 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/GBJAJ2000756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fb4243171923efa00e546aadb288d71e9323c6c4a7069e4733c75dbb126968. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBJAJ2000758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fb3937495754879442676795f8b4ad91752309f5518b1e16b0e581d4dd2ebf. 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/GBJAJ2000755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cb8014800010a7d2d12a8ccd466b69a064da4ac65ecd664b5bd073f6c4dba6. 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/CH3131914950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0b3d57040d6684e2f9c35b7e03ac78030d0203ce61da06a51864a6a2e149dd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CH3131914947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cbdf4806c9d23b72a884cbf4ec8fd9d568ae0915e78b86c7ab3ace32ba0de8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X41991496.
Hayden James Presents Waves of Gold (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6cbdb0b036faed714476f560f50a832b46588a14e0d3adb68e6344b24515bb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUFF02000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e015879b301cf98af4fd35c66f2f46e30481bd3e17a9feb298d5f0311a5ebf4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBUM72107893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf24d9471b25a77f9a24bd9992582c4ddab1e29bc7c877cce8bf5be929fe9c16. 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/GBKQU2393076.
Schneeweiss 14: Presented by Oliver Koletzki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1556d7fc606ae7486cfd11fb1dd3d3cc9e9dd65197d0022eddd112dc55a8379. 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/DEXO32235906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cce9dcff1ea2e762d22efbc28ffc0959d95c0973aa9ec70a00c965a724de455. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GBLV61915732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe921b5bddb6e0a3e87c5fc59f07e365a863e9026652f68c17dd8a4e9688ca9d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBEWA2305620.