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 0xf83358052e007e2f5a8d3b2877a130167fc7750f1614afcea269fff79b323e58. 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/0e740c57-34ed-4fb1-957c-ab273e292f0f.json and https://artists.proofprofile.net/proofs/artist/0e740c57-34ed-4fb1-957c-ab273e292f0f.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 0xe8eaa821976cdcd55039dae1b17ab6b4aafcdd4010630c0e9b925ce55f24fc9e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEN060800278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d969064695ac19069c95f9d4ebfefc70dd69cef2d4d4c2abcb90ca6d1d7a4ff. 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/DEN060800801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba70b4fad1fa4aa5a16266112c366f285f538175e32b0bb0fa8f75f849c21fe. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEN060900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bab5c7df3913b21b1c79daa998acbf1bc28d0d17c997174b937c41808502ce6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:38:00Z), 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/AUXN20902011.
The Ketchup Song (Asereje) - Summer.radio edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006ba638d30d09d7333ed0480f1f103e35a2c99eb935406783398fb230f855ad. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DENJ71000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d4b42aa9c91923a8909e7d21b311bc304c2252ef45bd348de3802ea48aef10. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/DENJ71300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e35800dca1489512725e06c2f27427dd3dac7d7aa7bc6c909def76682d693f. 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/DENJ71200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9568a6118366b5a54f5a56cc117e7e3692c01966e15d6dd3b3fe5e8a7a8ce4. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DELP71500444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafafcdf798a710b46ed7e13f43f548edef6e12c3033252fe2e9f07ea6dc1f563. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/DELP71600126.
Reunite (Hands up United Love Mobile Anthem 2016)
Reunite - DJ Gollum Feat. DJ Cap Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed92a6f0d833da1909385adb251d410a91bbc429987650a7e8600932a025a4ab. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DELP71600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6911a10a737ef26e41045fa355e13ef2ab4a372e6ff9ff48f46c24124c060b3b. 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/DELP71600121.
Reunite (Hands Up United Love Mobile Anthem 2016)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed3995ac9b599da6927bcfe4cc5ec6d07a720354de8871c62f11a8b453507bb. 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/DELP72000050.
How Old Are You 2014 - Megastylez Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f15c9f26a5230cd079c7d53442226d78668e03a25635c3cd3928537f4984a48. 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/DEHK91791750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59ef6a83965c0e643e47445202fc35004edd947ca7e1cb83dbb684111c7456a. 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/DENJ71000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7840ef5e4fc438b24b418a9930f684f23b7fcc98f83f4288bb90c6cb9e092008. 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/DELP71800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c14545cfa656f020da70b0d85638fcfae9b42e6d35eff5132708a6e91aef2a1. 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/DEZC62319654.