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 0xd1ed6fd13576653c9b01e34a73865b7febdf53167e2698bf2d26ebe1b615d578. 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/cba2dc7f-5ba1-4d5b-89e4-8ce8f2d5d51f.json and https://artists.proofprofile.net/proofs/artist/cba2dc7f-5ba1-4d5b-89e4-8ce8f2d5d51f.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 0xc63d63d0a0e432b53251acc5f12239a4580d2a4f2e57ef6845f5ab2965716f0b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEQR41700735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6b5cc517ea5ab05bd176765570989da3837413c2daf296ee88280b91c0c56a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEQR41700737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4668a5739a94b4f102496ea27f7a003c5895ea396cc8b3bf05cd3ecdb22492. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/DEQR41700740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0097b99d0e3d7787f339347fe2119fb036da7654d1a21498232da06f3c66357f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEQR41700836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768c068285e2ce536d35e5dd260ac50eb02289d3d625058a21eb88cf373b49bc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEQR41700732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbccb3581184dd8237a1a0177ec82e68ba292e753ab6b58e735646d0ee5473ca. 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/DEQR41700736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e293d437e3434ed7285e5d0f7e21591985f26f187314cd7665ef5e17e009ff. 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/DEQR41701020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678a0bbb9884e7c8d277710714f879b8faeb4f9da0f6427908f302c7802c4330. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/DEQR41701066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1ecb71b8dbb07a270d8ef949604b082f7b620cb255835b70ec8b45df38ac30. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/DED831900691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf57baaa566fe58fe5da13c735b38f269ceec5a593122f167a6e18214057ba9. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DED831900695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2740ac6ab8c541f611ad0e5c3e5375cbf40a47b72112fe8e0e3455b489d0bd13. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DED831900696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2005aabe8145c664dc951135af63a89a3e635eb6401dede6147ee603c54c3e12. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DED831900698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65de40617e5ba1e6f602c1c0779603f34acd610c705f96c4b3fa4c13ff1cbcd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DED831900701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46766045295e6951f767992232abe186acb4166726f85aa8bb959928cc374ecd. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DED831900702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ac06c0b2b33072a02c58debd2e83309eb26811087fe9038322a7212367fbc9. 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/DED831900703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7501aab0cbf8bb73f55d74dd48dbb16d17b008abc29f3d8557cb78bde5caeae0. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/DED831900708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b16e59a7a59d1f0f1191082c63b45fa8ccacb4302e1290dcdb9c3267d959425. 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/DED831900709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba5cd03a8b515c0d5982064e8b5c64cd424e4aa561dfb84fd60b8b25abafcd7. 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/DEYO62000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc4a9b5f7e504332881a448c788796dc261470cc582df279dad5449810a7bbc. 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/DEYO62000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05910351cc1618b976db2e840b602a6f62157fed907c5789650e12083549414. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEYO62000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e9a926a1308f5dccade771f2d38ff863b5df8d157c78d67f2ecd1dfcb1d220. 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/DEYO62000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161cdc26bd2e6f70eb45e55f8bba63787d76f242e324e8b318b5a94243707cad. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEYO62000109.
oh bitte, mach mich ein letztes mal kaputt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36f0f721d631496518fcf5a7b720c76be71873f20252f87d98a126db0be1911. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEYO62000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afddddd50849dd4055e4aca6fd87aab45ac51392c60a30672da672d7e905e5c. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/DEYO62000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd81eaf8cb67c86db0d0dfcd7f6dfedf4f0c089897d823b4ffdc857de3c7373e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX872190488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd81eaf8cb67c86db0d0dfcd7f6dfedf4f0c089897d823b4ffdc857de3c7373e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FRX872190488.