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 0xd3507e86dfe4d515f2a614bff5816f646fca550eed50e4a51f29a6ad6c2197a8. 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/721e3a43-34f0-416b-b543-8184e59ecd90.json and https://artists.proofprofile.net/proofs/artist/721e3a43-34f0-416b-b543-8184e59ecd90.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 0xdcebcc43bd3ed0cc5eca246b79dc02e1b4440db996f56975ac3e7a9e4648e0c5. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DEDX61600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b39d70690a25751aedd80415b4436afe21e03e411d7fb7e04264ba81cd1edf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEDX61700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f21f541604d5a618a4453463cdcc8ddd7d3da9ac5eb235c55eb7fa8f72f13b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKQU1843392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e215936d4d8ab19610eebd91e76b865ce5b69a2442691ce44970a3d760faa3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:11:17Z), 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/GBKQU1843393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3c760b14be43258c1762f084dad109d28e7ac56450619904b790bce7efebb2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:58:20Z), 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/GBKQU1843395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d47ea82759618b4027307519eaedd60742dda91c999dc2c4e2a50edc3eb1e0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBKQU1843398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7df62d044dd2129d3228b10242c2718a3add57fcc521498486f2431df644d3. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GBKQU1849876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b2b73c38fc2e4fd861853c122e665e4bf01f95ccfefca28cd002d513ad40a7. 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/DEDX61900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454d6201ec39a225e9d85a929a6d11d884f06e177d44b1873064b7d1cd4e15ed. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:35:35Z), 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/DEDX61900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f66e46e85602418596f4501a82266e2be9d408632e37188fde2dec046bcc427. 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/DEDX61900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b3f597ddf4d4e4ef9261cbfb71daa3394bf6899676dd2d248897fa68ef8b59. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEDX61900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbd6ebf4b4e8f13922dbf3efd0958d8cbd81e07e52a8e2d4b312f11d8a9f237. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEU672100960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7393fcdb1addac9062355e61cd1be1d8f3badfc5d09ea588ef8f6e81e9ea2d91. 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/DEU672100962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ab1d1737a7c2a2d1fff639141b128e00b4b48b22bcbcaf12fdafd01f2afee6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/US83Z2201223.
Zwischen Uns (Original Movie Soundtrack)
Velvet Flicker - Bliz Nochi & Emil Jourjou Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d20ec9d810c3ab4c4223a0f645ef8714edffb214c648fe76490e2e123f1624. 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/GBKQU2396290.
Prayer to the Cloud - Simone de Kunovich Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136d726819bdc78d2c24a19c9de836e52ae25615ff282d0b02b88dcf5296f893. 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/GBKQU2396287.
Velvet Flicker - Bliz Nochi, Emil Jourjou Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d20ec9d810c3ab4c4223a0f645ef8714edffb214c648fe76490e2e123f1624. 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/GBKQU2396290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af3281016736c9cce7e7847dbde64742574cbe50b5c9c4a0a914366166ea604. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/GBKQU2396293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0103894f591a503e30a4c7e51b8e0f8794c52b734c01a3ae11987b5d78e481a6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2396294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23d1b984387f977e3ed862de722803b668aa7890336b2e9e3da63c590264c28. 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/DEDX62300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6c935a08abd7d8681ce0870f498947ed3552c39a0b367bc6c53785f40414f5. 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/DEDX62300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a8bd4b54be6de83d82a96bc66c7b1c3cbd8820c584ccac93b619b91af2d51b. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/TCAEF1994414.
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 0x0c4981147b241cc6c7b2f1216b10c83c9976703d1eb7d9f9df2d624599769ab3. 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/UKACT2032198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5340d75678e9f07398972368c77caea7cf28a259a5368dd81968fc6deefce625. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBKQU2396288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eeb09ce905b021f1742c6a606d1549eb4f0ffdf143e3a14634b6b2d33b140d8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBKQU2396289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe821efa07c77fcb8a8dfa66c2fb98731db9993beace443eebb0f5a6edefee9f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBKQU2396292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f97175fadd7677a03bc64001dd72d50336aa66c4fb01002a9cb4ecfd06678b4. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBKQU2396295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc45d4c952368e2f26c4ab9a30df39eed4e760e07cba6fcd51e64069a54cf6f3. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DEDX62300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc6332a4cdfb884090377b23f863e717e936ec3eb81a82611c79b36c82721cf. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/DEDX62300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58479bce78e02a5afad2b532a7a3361ba9a16abc405071ead326e5ed9fa00e93. 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/DEDX62300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86743ada4ed2b5b75264fd0e06dc033fa6bc7cb81e2c1a4b2afc93fcf0d98fa. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEDX62300015.