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 0xded45848cfa0b89b19d72be46bee4b0ce88546b5d7af41a2f84d2bdb39d06b3a. 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/6b7ce94d-74a2-4d0d-8a75-0da9b94fb4c4.json and https://artists.proofprofile.net/proofs/artist/6b7ce94d-74a2-4d0d-8a75-0da9b94fb4c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kugel: Volumen und Oberfläche (Mathe-Song)
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 0x4388a03759d96b176279e2e1630c5cb0fa2580bed52dfacc5b97bf4e584580fa. 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/DELJ81590676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150f5fe5b97e1c221e14ecfad29919b9b2d2787d5bad0ca3d819bcf3d5dad57a. 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/DELJ81590677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddaef3866993968432b8dfff51021250bdedfb913372dc18773806dd202d3be. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DELJ81590678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf74cae04b92f7b1ebeb717964c385626fa4060548faef3a24efa0202f9d3136. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/DELJ81590688.
Brüche addieren - mit vedischer Mathematik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ae6abc0db6089e4bbe1ea48f859e029bbf602503644e6b55b125e81ba72198. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:00:40Z), 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/DELJ81590692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f07b41410a839d34963608a283ad10b6380bf8dd8086a7c834cfb9374c9668e. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DELJ81590694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24efe739994fffc5ebb1ed7975ffcfe68b7fb4382a4ce1169d3ca1d975956bd7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DELJ81611255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20168bb0782f709bfc69aa12b2d4d640b09d42a45ed89d8ae30887698615dfdb. 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/DELJ81739287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cb4778540e0051dd5f0cfa063c7137ce2e1b0fac93bee13be58d651f29a4b5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM2PV1702173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8841bd213a9a92bdc95c57ffb437017923cd08950d1ed703fbae8d222a1fbc. 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/QM4DW1866290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5df7de9d5eb1bb73f0c40898a7c20a3e140c0cc0f9d062689000352c040069. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHN31978859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4cda59e949fc6b12a056a6f54ed35c5b39a467d3cc130eb3f429ae11e98242. 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/QZHN62167919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5bde617e82a55ce9947246ffc49075216a4acb83d25399093a526e8c25f0c7. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZFZ22365802.
Euler-Schemata mit akkretiven Operatoren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb380dd747d65b3386a854351eb79e77f3af64ae97b75e712d43524571929750f. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:31Z), 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/QZNWV2426948.
Konstruktion eines regelmäßigen Fünfecks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f6630e553f6e72a7d42854ac4b2f9cd45bdbc22a01bc0aed1f802e770fdd28. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZES82515625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764ef2189fa27bbfcda1dfffe806c05dbe53be4005abb3f62f67c5f7f5b5986e. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:06Z), 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/QZWFK2576580.