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 0xadf52a35f1550b7251ca7d3fa517aa3cac57405fd2b2ee75d353b736ac7c7207. 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/62d0a84c-eb73-45f6-ad8e-aaa4004a1c98.json and https://artists.proofprofile.net/proofs/artist/62d0a84c-eb73-45f6-ad8e-aaa4004a1c98.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 0x5899bc454ed7550361fcc317d6402563d440550d8073e5cdb50dbcdd4aa1795f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZNWS2038870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa04a3318535e785599f2194fcd3d952f324350d31ec3e24ed505b794b76ca8. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZNWS2038871.
High sein, frei sein, ich will nicht dabei sein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f0ca76b19fb7ad7396ca3ce8f431bb00dc63f87c478ba2fe4e5b5d5ba282d1. 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/QZNWS2038873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efeed19b1cc92945c0f0fbe795b7a268b4344de42e1ba9b53f55c13cdd3fdae. 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/QZDA42198646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8613cca5c846b26efcd0bab359a6b80a7de192035f424eec94e68112ded497b3. 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/QZDA42198647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2a5d22721b873337c405addc7c5cac89aef2535692dd3b2be54f14ad168428. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA42198651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb321604d56eafa588967d5f09a8558543a6f3c1d8e01c2da66afba328d2685e3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZDA42198652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ae39b08b226dd3ec38db744cfca6111dbe7843e36b8506af54ee7eeb8b9ed3. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZDA42198654.
Der Tod von Edmund Stoiber wurde i m Horner Eck vorhergesagt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dec6028f60935c246935dc7fe6155bdb27221bc6046719bfaa76cc4492224a. 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/QZDA42198655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55030ced08dcd62b69a130e3ccefeb65eecc652c0b82816cedb50308b52c9f4. 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/QZDA42198656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0a7e8e3627499c728590a0c3cfdffbe13fe5c8287541a4158dc689ca3f6ac8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDA42198657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4120f4a86311f7a36bfdee72a43140bbc99b7791466c7c7f81bd235cb1effca. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZMEM2180261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8877b06b5a619da6563f65639f87c8713323eeb8aeac74992c331cb3750abbb9. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZMEM2180262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45388b8e832e078631f2d91ca774171f1f0d815f27959ed227bf9389c9870c1f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZMEM2180263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58039cf28dfaeffe69b96c5fa2c02fe9c84673ca7124c9871bf776438893396a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZRP42158847.
Dein Leben ist schwer, ich drück 100 Kilo mehr
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d55b4849b7605885a4cfbf12fc7f8e9228419f9663671f3318917ce0bb9f3a. 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/QZRP42158848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45042ed12d3df1ca464c59eb181acabdce78bc80d59868e17390702893291391. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZRP42158849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4807f4cc917e1b707d1b7200e354ca2f048b6234871f925779eccb126ea9065c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZRP42158852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3912305a5723ee5abdb4bb438b53baddd87efd76b6e6a013eb54f7a7f3a2b99d. 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/QZRP42158853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96612fd2892991ad18d8a6ae711b9254b28f6de924ab5c5f1272f026a8d69c21. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZRP42158855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168026ed2ec6bb7be672cf63700f047dcc73e0d51d534d40bc1fb235969e6c79. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZRP42158856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a9a5a6c64f3cb6a0b2747b9d97bfbbd7d5f4df9fcf1bf6f57de3ed9f2cbe24. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZRP42158859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4cf98b84b08edf44cfa98efd584c1016dcb7cf87e587c6ec9668fc28a10b4c. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZDA42332897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe809c53251d66ed11efce8e5805420adeae2b050b74936b7e4bc6a97e579fd50. 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/QZDA42332902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf491cca794f1594c72ce61facf0c4583539cebff3b80d1deedcc2003df86df. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZDA42332906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1a357c9491ad9244cf16206777ca0e5c7805d38e245c0205f5ccec8c0b37d9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNA2458159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0ed3e03f954f63eedaf2868d838a2c398af1e5a8dfb26980dd9c00656a0f60. 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/QZK6M2447899.
Der Donnergott ist auf dem Weg meine Brüder und Schwestern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86898997b7ab3f2eb8598b747358a86cdd6293cec71402c95da889b60cde2c8a. 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/QZK6M2447901.