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 0x037643b8b62c4ce891a8b8e9f74b4e29c5029aacce17d69e66535dd95f35b405. 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/70994b6b-313f-44d9-a268-c1228240958e.json and https://artists.proofprofile.net/proofs/artist/70994b6b-313f-44d9-a268-c1228240958e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Happy Birthday [Once Again] (feat. Fabian Buch)
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 0x132171b934352ce12e5a84271711facd4017fde57a8f35eef0e8dd7142d7ab3e. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ATLE71400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3943a7ef28f7a7ff934eed40faa94457ae6413d7e04f98fe3102b450f9153ea7. 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/ATLE71400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb741feb282233cdb331053f3aaaaf0d66c1ce3605077c843c6eedc9e47afeec5. 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/DEA811700250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f813b2ef66202d00df6acce326bd6b60c6fffbaa93658474d9fd32df2624f19. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEA811700251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd605904402476a2315ee1fd53c62a30f1d104923b2e865ef989290958b9d0c. 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/DEA811700253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587434c70d4a2bd0b80fd6d9b710d4c26845f23f61e956abaf478ef238177705. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEA811700256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa967705e471cb535953004844ed754e28ea0163be91feacaa64d4dc4fa9d3919. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/DEA811700258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd6260efb99b8b28b7a99318c2a743d8b7beb72db10f2eceb5594233058ff73. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ATLE71800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a2406a31d30bed0f1e130900e1806e6a50726c59b6882de006eb8005244875. 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/ATLE71800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409abe25744343fac5089f3366a7ecade30d4c0c1b32d436eaa10706643b9b60. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ATLE71800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab3aaf68273548f599d74bc2492e6308e5b68e6c2720a8bec2360a3ca484d54. 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/ATLE71800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2400b173739adfbf8d49b682c8c7ae01c8a063470e066b2c18106a8f36b7a24. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/ATLE71800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa072d9fc09787e6578d7da4ad5fa97e5353a93490c3a4e258fd593a3308efd8f. 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/ATLE71800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a678c1cc2b04b7d864319ceee99631f527760a1316cf3a1a93db527da08d0f. 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/ATLE71800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359ea71239fe999c53e7630ad6eccb56aaaa53d59971255f746bcf24d4539b36. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/ATLE71800054.
Über mir die Wolke: Eine hoffnungsvolle Geschichte für dunkle Tage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f12d9e6ca57e834eed0c0bd54f8074f37ab80bdfeaaa3cdb66c58948e09b445. 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/ATLE71800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5739ad784b9c7a016dcec49fd2886b9b472d1d432f929eec6087f8ad37fa320. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ATLE71800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ae997d6257f613e8534d4a62b6060294e1096808b9eb7a2968cb087e9975bb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ATLE72300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08c7919167551614010692a0ec4b192e460f3ed389f372199eb7af0d3da3ea1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/ATLE71800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc406960774e5cefb7a1e84eca191f2e86b723e3dc30bf008fa81b43fbb5229ec. 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/ATLE72300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ffa3b67e17cf541038f141e1658af1079a6facd05ac5250fdf3fb6d1171ad1. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ATLE72300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe212608bf40d7fd516b44fa8b34ad78f5a83d23ba4c1230f566b24ba2d4cc599. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/ATLE72400042.