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 0xcd3b9a9848ae7996fbeef06d1d8117d558d9e41f72b037e1f44cc7dc4b8e1083. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4426ec62-1cfc-420a-b67c-0080907ea508.json and https://artists.proofprofile.net/proofs/artist/4426ec62-1cfc-420a-b67c-0080907ea508.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 0x5c45a733e361cf81152c8df89986d96149f88559b07466e36dfeddc1b3dbed9e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES6111371110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba042302c0f829466994ba35b094f9f8de7ca556538845ea7275b19887c14803. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TW1515496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537ecb6c6ff61aecbb02e7a85e99b9a42d344819b8d2dbb47e47e797dca13f27. 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/QM4TW1515497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4881745cfc544f376d7fb145d23ba6f5fd0128e81dd8068f709774ca91be78de. 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/QM4TW1515500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26ab1b157c2b2b5dc31f2c418aaba6a27cc42caf4a147c9c376101fa790ccbc. 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/QM4TW1515505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49ff605d9b3838dd5467443a9526266b7473afe0768f286b9460cf5a702019c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMFME1544497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23629240168db642d8afffae923c46e1268db75d6c51e6e2ffd4719ae0802565. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:29:43Z), 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/QMFME1544502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e699e1253f2516eeb787774aa9232c13727b8bb96ed18fcf1ee4b1bb1efe3b2. 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/ES8242027706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd09ace98c76c8fddd440fcdbcf08bf820da51d25e76863084b457d3aaf5f4a7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES8242027710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6d697f71e1d47e15d472c0397d4857ae4df3996c9fd452c4f6df1da3445648. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/ES8242341804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbc4f3574f8035773963036a6075217d70da2fc08d2a5e9844be75b9657181d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:14Z), 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/ES8242341805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3be13c75afef80699faca4db95e4af84224f39c16f07288d9cf9b28eca1e324. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/ES8242341806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cd1406e443a125d426bca55504733a76dba76f7cae526bd9529fe575192625. 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/ES8242341809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8db5c2022d04dd560daaabba65900ca15216fbfb3373704abaca161be51e0e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES64E2508721.