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 0x502150aa0317f5a7436af5cf173623a3c725bba736e5f87435b5be4b98c5bc12. 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/89acadb9-705c-495f-afc9-a603b3197190.json and https://artists.proofprofile.net/proofs/artist/89acadb9-705c-495f-afc9-a603b3197190.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 0xf4cef54fe1addb179ffe9d1af796bb9f6d5d0ce5ba2025392a233e26be14b012. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX282144004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c560395a30f1b1dc8c286332709a026aab582f812d11ff3057d728a282ffca. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX282144009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc6dc7f27a0b81dbf94c36af5704b37d42ada7d9c40ee922887a119d22f8165. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX282144017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbc7a8fdf37cc6288ff302c89626ad4b7fd43fc4bd3912e969dbcad143bdb89. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5AB1822739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dc71d580a981e5cd05aa67e10ff0ccb9d486590d0b8444bfaed9ce7b6f11d6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRSGJ1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceff5f3b54b131b2b78b0d2ac71c310d2aa1f2bd6a818a10e8bc32cde0b9edd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:44:01Z), 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/BRSGJ1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0868bad1984628c2433d57b6fed3c72f4a4d3825bbb4e412c5b1f391ed17119. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:02Z), 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/BRSGJ1000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3cfa165c504ea8d84efa72fbc76e0d39f350b76bfa10f4510171cede7445ec. 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/BRSGJ1000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ab0e3514809c96a44dfc2486596e180f14ba058e5b1f46f7ebcd08bc181995. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:47:38Z), 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/BRSGJ1000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebafbe7d9a1c0eae8c03e75186391e63546229de66c92c6aa31ab2eb135eb1b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:53Z), 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/BRSGJ1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4cb7eab816f8c3cf7237bf222d173ffb1189a7ea571838a1ac603fdf32a405. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BRSGJ1000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974a52c11674c6d3f5fb8d11b1c5d677b4914e6ac328fc4355e1b2cd18bc1a82. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/US7VG1521692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6857645b7a6bebfb442690409196ac39674259aec7d32ed4f6485c6ecc1aede4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:02Z), 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/US7VG1521697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368152e1ab9c3d82293f0151e8e8c0e98d7ce5f55d5d8085c30864a6860806cd. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/US7VG1521698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02d4ef00e4391fb04ee0e3c9cf7011338223e05f49e97c316b43fc716d8493f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/US7VG1521699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5683fc105b553731e9542b0a031fb2b55fd8576651e6849abedc1129b9080124. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/US7VG1521700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fd990ab0aa2ddc38d80b9343a8e06eb48a5d8bbb42767b9c4d7fb97a18cf24. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/US7VG1521701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a89eea5a88e14c91cf20cef7dca83d4231e80b775f59d24e0a9a530262f4e64. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US7VG1521704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b9e6be1b19312c83a3e82eef51a951f6530a7b06b4549e8e99f319acd5b5bd. 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/US7VG1521705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f34d46928eb7d8abb51fd107f59e38321068951198a2e90247fa9f86e9b149. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US7VG1521706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0140e8c8dd1ce0e00808956a0aeb31168fb7297ce953e735e8dc2a05af22dcaa. 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/QZ5AB1823181.