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 0xf5d4370e05727fcb40007b887500e660434e064990610a6e2483984f7de44573. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c73e4f33-806b-4654-97b6-f9d2fdb26ec7.json and https://artists.proofprofile.net/proofs/artist/c73e4f33-806b-4654-97b6-f9d2fdb26ec7.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 0x4007c58901f2749c1e61a5a345dd4bad61d5074e8b54581ac573791655143f0a. 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/QZES62075696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a9a288ffc723c7456de45af0e3653d7e41bbef10ef6f13b74d82e41badfbd6. 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/QZES62075700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e733bc12727c861514f1d4fdefd072122488a6fef3e9dc31e2d4aa24c24a41b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:45:24Z), 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/QZES62075701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc716522fb6d2d9a3a8b5015e73568e4a796486549f4b0afc0711bff3f880dfe0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBSMU5133078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a264566447e32843c61809e2f37de0e2d4f43b52d0db0fd0c7f85a7df1abbb4. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBSMU5133080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca30a2cccc73f43b42a7f2e4714c123ef0b23d1331eef917fe9435015ef169f. 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/GBSMU5133082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971d040aa239e169c1ef0b07f9e245dd884a115befe186338ffd7dcebd1db67b. 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/GBSMU5843192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9cf4c03d22a75144f8a56092682068bc2a1fdc039f7b9116d6546db32e4944. 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/QZES72069617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3723495fe820443b3516df5e8854e837a8894acc7a1162ba5f2b906b08cedf. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GBSMU6492485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4049b6afb6b43429c8c00ff9aea0fb9c63314480cf5e3a1627cae53847e0f224. 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/QZMEP2065105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53f628e32c38b5c8ede0a1bbc8f796b67d8df601d427dacff590dd1acc70947. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZMEP2065108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5925da142cd08b9dd1eb70982218bce9924db2519dac8bf204bedd5d4b2eb8. 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/QZMEP2065109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe33c07c6d5a5e6b8b228983b83884e339cc690db37dc49000ad2e81dc2b7821. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMEP2065112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818e8c562c6b868c9bb2caa78a434362604fefdaf547789440fb16d1f339736b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUACH2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fbaf0193176376841cb44744bd0e3397199ad822fd377d96e0e17034a6ee26. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX872424501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114ddc66a3c8423b2c29aaf6a5cf67ca455b55746d5d8d2bb45b76adadaf23d9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUUM72200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa4ad4d903befba846365eabe19f068610ccfecbd1122b0d461aee4c724614d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HUUM72200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15d248a1c50cb9f8ca27afcf785e5c9bc9ecad9a01380a86affb0ad61fb0b4d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282367067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda708044973bf07ee20794dc99b7f78d3fc1de70184244c5c726bdf03ff43a1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX452305651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0721506ec68ae352b798bcdee5ae9c81ac9bd2dee1beebf3f0c4ae77fd6ef6bc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEYOK1869995.