1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3016046191d2f76978f8286f7c6314426afa8242ad1e11642d21ecbd6034ea54. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/483ad2e4-4b24-46e8-9efe-36e35589789b.json and https://artists.proofprofile.net/proofs/artist/483ad2e4-4b24-46e8-9efe-36e35589789b.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 → block OTSBitcoinBlock must exist at that height 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 0x044d48db54e9f60c6dd3de24e16fb6d7cfd238697241b9427b2165f99d78458d. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/USE830952575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d8764d4a6e4d181549a02b4c96c1a4c6b0b379583182d595f482944d6d3d6a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USE830952582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3066b443926a72b57985c885da83b052c88c12ad325fa90d10a23ea0171b4452. 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/USE830952585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7fc479f39ce36102a2b4aa1d092eff2f507ab7914db5f3d93567b3fe1e1627. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPJ32351622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ade89ec4bb7ebd8ab20e7a5b34adf45e91383ffee2672361ccdad1bd33af38. 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/QZPJ32232551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53925d7a8679d1300f927de377a89b71ed764c9bf65596f62b68e4f82bb30510. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPJ32232552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11ed65108d247c30a182caedf2ca3b8bf4e86babd4981953a69a7783af99310. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPJ32232554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b0cee9a92eab1bbd4e412ba62bca9433ad7d4d47b4e446c73db70b4ce2d3a5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZPJ32232555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191b382b52618469e3ff3d78fa3804d0003b4ab7c7af765faef17aa860541ee1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPJ32232556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f68a4d1e97d25d7cdab311b9e695cb552b650bd9bba014584a32c46966cd9aa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPJ32232558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcfa1427c8d09687359a1b156b1d975dc91e9dff9524e5f4b404341338a8c93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPJ32232559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a3b8131e81bbebbfabba66de3f1444a7c0bb2a3913ef9b16d423f64b070cab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPJ32232560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd9b05e85ca1ddc9f23f568db4a4c9cd04332f95c6b90368c13f3107c022717. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPJ32232563.