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 0x14c27c26117a44e4761a14c1526052d921807721efe7487f9d2db18fc458335b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af3ce65a-6402-48ec-98e1-002396b6a9ae.json and https://artists.proofprofile.net/proofs/artist/af3ce65a-6402-48ec-98e1-002396b6a9ae.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 0x49f6b62aafb4640db9ee6a1a2c0cbb88cb17d4be8eab36922467fb23329b5a4c. 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/USHM22363006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cb1a729a0bf8dcde23ca66ab189df89ddfddccaf4e6f47012bcbdcb45e06b5. 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/USHM22363008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1ffa7ef773517107f8e40efb173d5aa1968d3dcd364eb19132bd8eef0b0a27. 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/USHM22363009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaccd4d361988e8a14f9caeb8fc3532b2e58a394e59b8cdfe8285dd31a1665f. 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/USHM22363012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313f47b5f982207a14cd66ad701b98c4747212d04d6fdf8fe1bf4d424839c929. 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/USHM22363013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6de7870b3ab4049235efec652674344e8331586359a4c9d5594fd340552a05d. 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/USHM22363017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03808d9db6d4481dd24ee1f139b49d4125118712e9daf5b79e17250997d6d1d2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM22363018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2407e2901693d778734c43a918eed1d6fdb6c489aab9d4cb5dcfe0e8a0d86a2b. 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/USHM22363020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4889fb39c9d8085a7056049a6da4fbda679c6a1c8498d0d7230c2d0bc1fd4549. 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/USHM22363021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04898891b825a8bb00ef00279251aa373ffb05118f8dac6a4688e6b0832f685. 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/USCGJ2073413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73943b759bb0dfc431b2a03d5e05dfcda515d04a272fa1faf84bb0716e1b9f0. 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/USCGJ2073420.
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