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 0xb591483ccf201166d36e0b4bd9ed19f44bb78f9ab6ee0a7f65f908f01a7037f5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e85d10a-9404-4054-8324-dad1193ab871.json and https://artists.proofprofile.net/proofs/artist/8e85d10a-9404-4054-8324-dad1193ab871.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Meischter Eder und sin Pumuckl, Vol. 4
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 0x9ab06e05c2835d364bb041acc93fa10375a289b37dfc946b0cea654de594be09. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH0042201015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d808850e9317fd79c8d4a5ae6e1be233e2b49a9fdaa36cc0ce4d07c6e847b4e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca31f82bbf4b6c8845f9daef4402b19b29be4f2d29dd3018929702f229e539ca. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33530d636a2e7a522c6f68f4be61dcaf13d353e28f61aa4fed8c42ca110fd793. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98705d462aac0f79e189cb1fc7791d7e5931c0de1132bfdd296482eacd9c0381. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3353a5ac5cb10e288c9d1560337cc8bcbd7941c7e04047e7b1e59f24fc2b589. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b313529a8d40d0fd790f0b326a9f5d21ee066daa2b3411e93b97999a917976. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201021.
KAUT, E.: Meischter Eder und sin Pumuckl (De), No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2959f53ead0ca2c51a1b2f4678bf74f28bf7b88e35b72c24f4fe6e55fd1e4d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4033435936620a5d692afda6f6015a8705ebc7551f42328c69bfbfacaab3692d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42d0fb011db1e97e49fb59d801f7e5d1a9137d601062c90fd19f57603a04685. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13c542a0418421b334155ac8c1529bdbb8b657f0cc12228a73ab8c4f07a7e59. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7fe89b36e48169e7e700129e1ddf3e20d5dc7be7e8287cb88bcc3bb010d645. 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/CH0042201187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fd301e663026fac33250d98c5144a31a2a4ca14fbbe0368e31223f587f3a67. 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/CH0042201188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2d707c24931197fca21ebb01c5f66198e5602fa2d2588dec5b6e48d496e4a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6487c65de80b6c7ea4d0d8d9bae219e211b094765e9a6431cde27240f4bf5ec7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb930dd0f240a1564c513e4ffb3275da6c1449440697a2e2eb8194372f12f93. 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/CH0042201191.