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 0x0c2c8050d133ce5f28567402fac923b05baa763fe642fb36e3b49ec3ac6e45f3. 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/576348b6-9842-42cd-9629-59e0c6d423e5.json and https://artists.proofprofile.net/proofs/artist/576348b6-9842-42cd-9629-59e0c6d423e5.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 0xe1fce414af49c55281be3406659bedd6a3cba1f687e3949b45fa87431759b3fe. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DEC769600150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015f5127c5de1e17247243a7fd2a8e63cb3898f2641898325c16ec1258612788. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:55:16Z), 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/DEC769600161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5af838be2cef958b9eb110cef3f77d717e0c4190ea2679eb7dedb0db7f5f789. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/DEC769600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0576fa4885ae905d88e5fd80c50af8a1fb2cd7a7b98a6af71a6033e058a5d629. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/DEC769600171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8155c3db591f5b624fc7d9bf12e9f4941c1b1793d7b559670b2161ffc52de67. 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/DEN120000930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805084082993a98ffe4a27129abee19d4bbbdd4577b8dd8eef9ca654bf08df06. 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/DEN120000931.
Bis Der Arzt Kommt - Intensivstationsversion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0458bccaa91a6c9c9897e9de5ca396913f2338b6f04716303ad22746d19cb40. 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/DEN120000622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce243f48c4f1cf7afa10f3da4b469c4df2b561d7ea961b22b9625981f136a9a. 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/DEN120000940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ddbf976ae18c2cfae38bb14ca1281e8bb46f7f8263b2ba00adfab3ce9813e8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DECQ30500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6c5f0fe62917933ce026f2672e6ba85b5dd50880cc5954905ba0b79a770511. 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/DECQ30500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a61ecf2da7760213c778c6d8d0a6a31f88911c44bc1df5851cdf442ad05749. 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/DECQ30500054.
Es macht so ungeheuer Spaß, mit Dir zu ficken
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6746359ba9a7894829d3c2ef1f7c5cb2e5dfa609b2d0035d32ff5bd34acf416. 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/DEE010500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb84a47f79b65f58ee84c11f6eb7a93bbd4d604de469cdfabca0509eb49a97c6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEE010500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf92e5e8246f16e40e85a76db2d73d43b56a91cb759b9798994766c1223cdc52. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:24:05Z), 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/DECQ30500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc801eb564566da2530a86fde0aa2cda23fd16d028b9fc5a208f044e469e19993. 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/DECQ30500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73bbc0d7fd98892783549b3fcbf966d98a82abc172a3bc6d33d172da319afc5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:27:40Z), 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/DECQ30500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688855fda3ffd222d2beb4a2a19903452a3d1023cfcf63c4ed3d51e69605411d. 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/DECQ30500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9152af47f4a210757a6f424e96e54538ef2e62e9027239de09f5c7654650727e. 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/DECQ30500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ed0bb81a479ec98943c6103b7cd890f9079f3898b30688bad3b110b45a6e94. 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/DECQ30800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd967c52dd4f32d6bbda1c31b132e3e4e5786b00c11a56a983cb177b569b1641d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DECQ30800189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375b4d275b71c3b5c00a6e7a05842ba461d8d7957c6ca78e5146ab83ac79b048. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:49:28Z), 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/DECQ30800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b3dde0aaf5b20636be6ef0483657a8b3ddd18f52150eef649e362331961cf6. 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/DECQ31700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9686bbf61ec30d215c8f296890961db45c0409fdb653e22d851018adff6d86da. 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/DECQ31700011.