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 0xd52bb53ae3cf8eb0dde40f2b4b849498e5249acbb69dfe374f99a6e32572644a. Chain 2 (Bitcoin): anchored in block 953932 (2026-06-16T11:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f61bc89-b5e7-4880-9855-91311b83139e.json and https://artists.proofprofile.net/proofs/artist/1f61bc89-b5e7-4880-9855-91311b83139e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Freiheit Sicherheit - Endless Nothing Remix
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 0xa7573077a15216d5d0f461a0980822166ba4e32edc037038cdd16a75cfded970. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DEH742317419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efe159e1d65614cb49ed01c0d83daae628ff2aef511c20919e95cb54e201cf6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEH742317420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeca0a28af5727d6e337de40a07cdcc75475a623f7d5ed3636d15cfbb06e0169. 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/DEH742317422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5900ade8499e92d600b21e963056e3acd794a0e4327bb93b44e62cf094a1cd2. 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/DEH742317423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335a6e69722eb00b4909a03c29d7f0394f7d96acb31513d44316ffde2eb337cc. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEH742317425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd24fd521a71c4df729937b9d8f0eb75aa94b6a486a3cc089ce5fa501b8680ee. 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/DEH742317427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93257246af901236ba2bafa1d7d412c6040267adb03e2c5cebd2bab6b9b44f0. 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/DEH742043928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e10c114d4ad90763cc96f6fabd662589115bae759cb2153af470541f3912e9. 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/DEH742043929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3cfe504666c9819add9e704923d7f3dbbea37ff9c4f8a67a057b339010d8e2. 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/DEH742043930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3b1af891f4c52586108f2334bbf465ebe3f7b1c5c2e24ab6c9665c12b740d6. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEH742043936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f278aef291544fbcfa424f20c702a89090dc7c0a1cd8efaed161732b88790. 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/CA5KR1802764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4fcac4129ef15f075062ded3e131ed90cab2543a2266674ec1ec61ccec5863. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZPLS2301167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d79977a3fb2ee4bd2e1325fbda883a88cf9a1f34db768b3ac55c2d56132feb. 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/DEH742000694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7dda35fdd226b73b4e1e19340d2470a096812640bb912aebc4642e82a6a113. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEH742000697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7f8107148fb9a1bb29dd7e73f3c9eaa4bee9f3f2da9f22e3670af01ba5d850. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/DEH742000695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127b50fa028041e9618671fe6ef6d922b695af3f5c50b09e1821af6420ce45de. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZK6L2096650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43df17ad89e91664cb16e1ea99d54af74d13de846029d9e85e163c604d86ab35. 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/DEH742436850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922c65ce0d65c860a91b967b50106d480fb4f3de71247e95648db431feca2b24. 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/DEH742436851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b09da7fe0c3a568f8b268c90599dc627fc58ef2a9ac75d117822fae1483271. 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/GXFHP2419365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589799020734e4e754f057d3870766c9d3dd2a4dcfae485e89f88dbb38e43823. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GXFHP2457780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71eaac8c408f98d5a9646f721c3ed3a777e3b3fd1cb79a564f0bbc013ac4f487. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GXFHP2468567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d48df60f4da8a6502b67bdb07fdcb63d3a3179530e430de55da5adf3d9c7117. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZFP52416155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2831181f44339ba0e9108a7201467a4e68b8a9009937365c97e8a251e4de742b. 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/GBWUL2062643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabce8839a17a069ebbe82d22213ea743bd5cf461a8d62d43c62471d7ec78e1e3. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZS642323574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f7f361ad515396856110d6f0eb9db657b68bcaed9cd9463be121645129a3ac. 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/FRDX62500710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab572e8c719c53ea4fb18d30b62c6935f1715d5994800635184d33ec1f0cdea. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRDX62500720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb221e186ca6d367a77d63efcb2c9b15d6032022dde690d18125d51900f3821bc. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FRDX62500730.