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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc2d0bf938d98a10142d068eb63d5bbbd2df25bd3acbed3ecc7630dbcec0fb8. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/997a98db-09ef-4190-9148-06bab90321cc.json and https://artists.proofprofile.net/proofs/artist/997a98db-09ef-4190-9148-06bab90321cc.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fc301e83adbe46dccd9b9610cf61a006521fc52b7e031396131f0195641a83. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEYX82137432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f18ccb098fdd79ccef188e600713ea8b6180349071dade0274a4e48dce3c52a. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:30Z), 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/DEE882214249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ade7337a9d1185f39e3ab9b0e33913e351d018576bac8fa4696d118b7ee750. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DEE882214250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7624f701e8a98324e7b8e5d6f23db122fe474d5ed5de681f459010840b68801. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DEE882214251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48fb4ca8a1ab9e8428c0480930f6c7230e96788f3875a2ee91aa0d975eda752. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:59Z), 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/DEE882214252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cce976f317a7a475fe78a898f7a2bea2d601bffb85fc12c0da6083059ec1d8c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEE882214253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea86980c9263db37dd687fc83bdb7406f486918c7f6daa5822ed5c2a630ec58. 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/DEE882214254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ed4851ecda4613ffd41b7eabb65e92ad9b9de21fc0ce7237139b1046467483. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DEE882214255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57a46f3650735318dd5adb33530b1373316c9e0c3568e8be69e6febdc9561b2. 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/DEE882214256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb602e7c78d97597c0b1cf1c168c4120e686475ab636ff4c81d1bc31fa09f0ad. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEE882214257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1212334df0aca3a45c07268895622475779127fce5058a27464ac9a8307b279c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEE882214258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077270e2fbe25f5ebf80fdc0fd59372ed6752e74b3e1cd3c02d71ffbe3f7b811. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEE882214259.
Die Möllner Briefe (Original Documentary Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68f2c39fa1061537dee10caa4fdc8ba0ffdcbc3ceb4ef998318c43e618f4c88. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TRBYM2400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68f2c39fa1061537dee10caa4fdc8ba0ffdcbc3ceb4ef998318c43e618f4c88. 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/TRBYM2400220.