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 0x9ca1c2cee0e47e14733b515bead65f9e57a5a4a8440d556465c14cf36d78cb98. 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/d615602a-9f06-4cc0-983b-409826dd1421.json and https://artists.proofprofile.net/proofs/artist/d615602a-9f06-4cc0-983b-409826dd1421.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 0xcc126cbcb5f3eaa874a0bbc24e005d1c5486219cb4e6661308666483b419a1d2. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ITK251700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dbecd750ad4fad50a347d81479dd6448b8f6a207cf982b23a6034b85dfc4f7. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/ITK251410015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9b7b1045f4a595640a8a6ad45f6d12c26c44a67ed631ea66524a69b1ea6137. 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/ITK251410016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed49ef5b63de07c636004447c34fc1f2adc44867c0c7a79d1365d6441cf15488. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ITK251410017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587308fcf0aed25355b68ec2fdb9bf84881c48f8fb0971dc91e977bde9df2bbf. 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/ITQD01609203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90bb2aabce30670d1af2b4f91dc41c3f453bed202813e072c08f994e464372d. 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/ITQD01609207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bb419c1ef63ccba8980f0e89bff5c9f174d75a607a7b6197990bfead4b02b9. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FR9W11503431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1bba275d1173504e12d166ac0ff2738f8903722b8060b904ab39f3580ce75f. 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/FR9W11503428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653e295df662eb1ca8ae8dac38af9b3b9ed40710b0c546cb809339c84173b96e. 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/ITD5Z1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36427cec7d58641a4b91f835c10c11903e809a481e8dbe82210a2b9d37f1f2bc. 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/ITD5Z2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97adbf3a05d073653d7d6810565b7934bfe381da8a156b9cfd090d501cd4a0eb. 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/FR9W12203449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd992d799564623ae1f33ef7ae7721c50f4a4780864e3a72c1e3f2143030452fb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:53Z), 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/FR9W12203450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e30885a36527c2f7ee7687ecda8d9a04e6ea3ee760e8b7aad07466ea868b09c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR9W12203452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c093fc1510557a7a1112ea986a2e0913a33ba63c90816f6d721b32e014fa31. 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/FR9W12203453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c5d31d6cbd1227c008d542c1c1cc5899e85d25a828ac5432fd3b25efeaa81b. 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/FR9W12203456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97adbf3a05d073653d7d6810565b7934bfe381da8a156b9cfd090d501cd4a0eb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR9W12203449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e30885a36527c2f7ee7687ecda8d9a04e6ea3ee760e8b7aad07466ea868b09c. 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/FR9W12203452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75e876c642f416e7c34f0d26f312c0e4ceef5309bc4a342ce3da6dcc096bdb4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:19Z), 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/FRR642500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a90d95077c8210c42d37457c469afeab922151ffb8d6735dc6e50aee94bf298. 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/ITUAX2300007.
Capitan Capitone e i Fratelli della Costa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbe09b9e7669dbce44960450d6684e00c3cd8acdb85d42b769231844ce0dab3. 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/ITQD01609307.