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 0x2404fdaccc0e212f58028f5507ab5e2bdcb90d40e955299481b8d7905de96ae4. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49291280-6a5c-433a-9ebd-1e62133655b1.json and https://artists.proofprofile.net/proofs/artist/49291280-6a5c-433a-9ebd-1e62133655b1.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 0xe6b3f4b060821aef4f324fcf711906e88b03b3d2a667fb35071e908dd21c4449. 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/GBLFP2114325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ffe634feeb0e53f5a81c538f5725d0acb37c67db27f7fa4ccdedcffd7a3681. 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/GBLFP2114328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cca9bfd7390dcf2af29cd2eeb2141942745e7a60f65a392e41b9c063dab031c. 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/GBLFP2114334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1d2b454a71cc96d16631ab31a8e64c8adf814492f9626e939e4d281c790396. 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/QZQAY2373907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5ac405df795b1312312b1f86e669c8db8cce5beeff4d81586c9cce23ce42df. 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/QZQAY2373202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7c4ff37c6cd83cf3aab3ba34611e6090b221bbee0b2b326cf789a6fc4da8a8. 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/QZQAY2328564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9ce7c201c2c09ea601ad2637685ba131c74c6cba888df27a4b2c65310cb87b. 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/QZQAY2397062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86768034f75f7aaa970ba4b41869d10dd20bfddb9fcd1c7b63558e392bf0e21d. 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/QZQAY2357412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34830841339c17324efbaa76f8970ebe6e733d620930b1c91e13602b9ed2ca3c. 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/QZQAY2352765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70028f66a68368823c38f4a86e8d73151342d8d1d45b2b1bacbb7c274aaa11e. 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/QZQAY2376776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5642cfa0dec00bf9bfc941d5c282691ef28cab32a27fef9dae12a0818d11bd8f. 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/QZQAY2355084.