1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x5d8cbc9cbea1fe87217aa8f1e10fe2761eb60311db527583a8e124e86370c00b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4492cb3e-9afd-49f8-ad32-3fad6d878d49.json and https://artists.proofprofile.net/proofs/artist/4492cb3e-9afd-49f8-ad32-3fad6d878d49.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x13c1d455ef8bcac6e3d846080138f9f30acd31cd75ff8e54a35fa6af9cbea589. 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/NLZ542300455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c1d455ef8bcac6e3d846080138f9f30acd31cd75ff8e54a35fa6af9cbea589. 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/NLZ542300455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178e1338a1534f164559e1b537da3e5e52682bb1f107ab240fb172fdaef43575. 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/NLZ542002104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5726d7640ff40b78a9b18f21f93d37f18886bcc2800244c06a9045da2ec9fc97. 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/DEN062101402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6e2fd4fefad32333bf542ce29bc91d4be3cc823fc08b00f97f122d046cce99. 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/NLZ542101461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631e137e15f21a7199c8f84c193b49406ea4eff33fe63a18df9ef70802d4eead. 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/NLZ542002103.
Champion - Summer 2021 LEC Playoffs Anthem
Champion (Summer 2021 LEC Playoffs Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadae3b7a86a5d023593050e0926f49f601c8a28e3253802f898cb8498afb7962. 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/NLZ542101304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0907b6d2ccf3096a55180f0b7f81edc3b576cf3d4e917cfdadcdec83083401f1. 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/NLT2H2401272.