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 0x971060684321b6971cc0cb25554245ef75aeb1c07bac673b41d1edd901a6d31a. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a54a95c4-10c6-4400-8799-eca3ee330c75.json and https://artists.proofprofile.net/proofs/artist/a54a95c4-10c6-4400-8799-eca3ee330c75.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 0x06d7efa269c1ddfb77304e08cf4327de8cc75fab05ca134e9a9b6e7e062a0d62. 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/QZWFN2426250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8201cc6a399d2e7dc28ba52f030f89f5a499911f0ef63643ebacdeb3cc62c5c. 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/QZWFN2426253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64662a5e1de7e3c135e5fc66ec29283a73585dd6c0ff826e7f51e2b858cb6389. 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/QZMER2418183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb64a1b2dc3119781ce8bda25285b0fc512e1ca21c3caf6fa47006d39adeca6c. 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/QZMEN2356410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5377b6d0835d43b3627502cf81da26ddc4dd2dfdf8cfca54be07ff2508f40c. 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/QZK6M2342956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f0bbf76046c962eb0c5445fa5d2d2248424bc7338643c9da6b7a9fc36910c3. 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/QZMEN2356413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21c487451e2aa84842071739b633a7ddf4a127f4767aa3ae27886c52a12e0de. 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/QZMEN2356415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c984096df7d1b4fe8dc3cad0c2d141616ead213623dfee2dd68d2a14c4ba0d. 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/QZMEN2356417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a72a8e389f51e6ec8136ee196da7f50c168c8ffee29e3f23e0b2fe622c131b0. 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/QZFYX2357434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6701d24ff6850cce638688d316bc528b2d972ac721526ed13e5de18536e2f579. 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/QZFYX2357436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc496be8d13f1bfeb33cd15b814426397e9b7f6bfe68f113a6a7f477d941045f3. 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/QZES92530106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee41e212c2c4c108949c74e6a94ef784dcdaa8b92d312177bbd696ce5d0c10b6. 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/QZWFK2390041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4bb1edfdaafd60076c3d5d7738aa72f28e02f376c11a48f85a4766376e6e30. 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/QZNWV2377966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae670ac2ed5dcdaba86b71c70b8797f290590f39c06f31925d29977cdd7571c6. 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/QZK6Q2392299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269c44fb68d11c33881db7539b493f7dad8431825aa1fde4b0e2718026216872. 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/QZNWY2200863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbcfbb6e7de323b64585b8d13aee5843652d9980a6e4be623510e9fd97200ec. 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/TCAID2400897.