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 0x5678d7e0421d4faacda28e84f24470aaf672bc3a9c916aa20fc9673f12b1e56e. 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/84c51303-4d17-4cb8-9142-139907ad5433.json and https://artists.proofprofile.net/proofs/artist/84c51303-4d17-4cb8-9142-139907ad5433.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 0x1df0c8222ea8787ec2f6dbd2d82caf2424735b2196421627edf6649c6ecbc8d8. 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/TCADE1720186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b8fc8a7b95b48bcddfc63b9ff19a799d0e3f7b5aaa1d7820967aec3c76bddd. 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/TCADH1773977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b59a1ece15717bfc66e586917d5937e7aaf1bb4d25ecbfacb5b4f2d771d7e89. 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/TCADH1773979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57f1f0d4a31607760f5ba4e160b7885c068500e89c1471c178f8b6309a90460. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/TCADH1774000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0661ca6a44707f5bd32336eae5726c2382e40d32d084f806488062523a6cfe38. 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/TCADH1774004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dfb82bb5f94da203e5d1668e153ffdd5026cf9ce3090bfc55ff1b186a92512. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/TCADH1774009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd489b5ed45435f6247c886c1a615031f914ddb3b7c83125e3399a85fdfbe30. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCADH1774010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eee9093783ab2d11639c6e739a1ca182d4204fdee3bc893b539e0a68f1003a1. 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/DEKF22000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cd61e888cbebb163ebf95d571ba9175d7a812cbb1794d7cd1d7a54ba21f580. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEKF22001369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a19e9fb4603636296bcb4569211c56e4125615106d8a44246a63fa8faae3f2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/DEKF22001612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed9b27d50a0d7a0e88ba9fbac56408f00d57ad6a4eed52814b1a4e2fe4dac5f. 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/DEKF22001794.
Der Teufel auf meiner Schulter sagt es wird alles okay
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cd61e888cbebb163ebf95d571ba9175d7a812cbb1794d7cd1d7a54ba21f580. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DEKF22001369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e417c6fb9f76b3933c15fc7a8649f2e621f14be6fe6475661e27fb3dbc6f7c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEKF22001844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eee9093783ab2d11639c6e739a1ca182d4204fdee3bc893b539e0a68f1003a1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEKF22000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f8ab66b60c160050898cff01c9e1bd4732f05269f4ba43117af9a6919bf559. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DEKF22001848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fd293840e5c960a29aca908d72e4dc7d338cf23cd78c070b03fadf68a24403. 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/DEKF22001849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f61afa720d9994f3c030fe13b9d66b29833c26c95470be3eb6ea78d6fa613d3. 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/DEKF22001850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9078fa49875984319e069605234782b690aaf7c6e727f7d3940d3990b5d7de. 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/DEKF22001851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac20f0279a3e0336816da13d0d120e615eb4604d95e4a52c6d4ec3e60fc033e. 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/DEKF22001852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773125497693111f10e4f48ea5bc90909ea5020b49223d1aca3c18f03dafb856. 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/DEKF22001853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63faf224b2e5f55ad892b6feabe04c4338d4bf9d72dd6f71f72bab9eec1a8754. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/DEKF22001854.