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 0xf46898b22d0183e83d6e0c0df6608dc45e18b4f98f814037d71e14f1450392f8. 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/a79f148e-c409-41f3-8e28-9501551135f6.json and https://artists.proofprofile.net/proofs/artist/a79f148e-c409-41f3-8e28-9501551135f6.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 0xb20f9e16dfc3a77c613b4a4a6f86fec76c20d7f629ef12471598dba92a3674c0. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DEAL30801439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e43bdd2417a5b461a7f8a393be6d8196ea65ae3d1b689ebe644e86cd3a1920d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEAL30801440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe66ab411d5e68a0fa0c284db1cd12d13fcd3059a1536041e82319663094d82. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEAL30801441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756b5a97a499cd9f0c3bdacc4691924ffa43576428697143b9eb05070c8a3308. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:04:06Z), 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/DEAL30801448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b907a2de19288583f236d14a0a5c026b927743af1c90d50f8a014ce1e5c8acf. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:13Z), 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/DEAL30801449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdbcfc60461a01ce9aefc29cac2db336d0fb991199726e574fa7f0cc49dc67c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEAL30801450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc15e809d6175665596b2f6aa0a5754bcabe977a5caa5f00125edc364d57089. 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/QM6P41899812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5cec2e7f9eec5916e47ca801726fc5ee757a42594c77a86baec9b60864e528. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMBZ91904744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe50966c4363465f472917d8bc4acd1487fcffaae1a7edc6c3d43caa212b8f14. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6N22166981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed2c2088f868b6fa7fff92970c7da3c5cc97c29f9c15143db91f9ab12c5f6b0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMDA72353791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd4f9e57ed36bfd54a2ab87e203cd3d34e4b9f031fb628ba999d14a7c3fccd1. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:31:23Z), 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/QM6N22479514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fd70f80170fba372b868fdb831d93da38100c7d430dd35a6a0b3eac05ffd34. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QMBZ92555985.
Go Big Or Go Home (Norbert Duvall Rework)