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 0xc3f2991c4704af0233acdc59d04deb15b79b80a104c11da13f62c21fbb9baad4. 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/f0f80f9a-4d1b-4592-b2e1-07b7ae2129ea.json and https://artists.proofprofile.net/proofs/artist/f0f80f9a-4d1b-4592-b2e1-07b7ae2129ea.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 0x3aeffc1127708472ab8e8f680997cbf9156aa07cb5061ba0eaf3090193f85a15. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXBAV2596974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4725fd4823a5ecff44fe5d16e7cef86db5f331e6ef294a0befcdad9786f8a027. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXBAV2522660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb886e0d92b2623e6e7b3fcf5cdd3b4965ecd40933f376564029f1b0d5a93527c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GXD7V2584004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d61916f8a7495a7cfee112dd4bb835f5c75727bfde8bf10d04895b4a92a3dd1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:04:03Z), 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/GXD7V2542509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc964a2c7beb47fec5a46d0b10a2e85f2408414a5e839104ecb682b79ff2c1bf. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:16Z), 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/GXD7G2513815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864fd919cf77a39240902564bd9affbf2a70e9069cdcd978cbb7f5e9dbb03892. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GXD7V2545236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c48ae1077083e5b1d79042d677022deab6dde0b94244888fcac4e0e5cc2a71a. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/GXD7G2581517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe80fe84ee21b786519ef97f2610a4024f0931ea96c5e92e4bfe2606528c0ff4. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:50Z), 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/GXD7G2502443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa00b34dd30c3f1905ee672fd02072a96f2e2dbfaf7d74721e9740a5a1eeb85. 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/GXD7G2558803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026805173e256cc20d046e15f4d086611822be315ae093518395e5bc37d7ed49. 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/GXD7G2520341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb34d41798ffb3b4a931b587fff0dac385047ef1888137cb388ff13f8088c439. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GXD7G2583091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c13d8fec77bd025b3f08bea354b2b5a3f76814acf9d0d43e5c2fa292ed1aeda. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/GXD7G2504939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343bce90c0c8d1c14fe1d165df21a9c0f4411dc8c813aca9017ad3cf8a1b31da. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SGW502530775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0728a78f2f579342ab9b3eabdee7babc6aa25f48851389ce1a16f596ffaeae4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT5M22563957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073a0bcd4b77c13b9e2233ef01203f41a2d69257fbce19508a3d75feed3d1e1b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT5M22504569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a6fe64b2967a8f99b0b2dfb7cb2cdcd899ee517b875f3de8e0cf8f4824649d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT5M42572372.