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 0x9cc9662623e75d8b36c0a392fcc05b583875cacb33480639ed49f6ff83c5f451. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6acdf8de-6f57-436d-bad6-bb096ac8fdff.json and https://artists.proofprofile.net/proofs/artist/6acdf8de-6f57-436d-bad6-bb096ac8fdff.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 0xe5b91fd0f71e81c2f5ab7b58df0b3d9983663179d3afb79787778e7c2934394d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEY472470921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5c01c13804f6213e63f2a5e707f7296c068132d81ec2c3444333ca3cc2f367. 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/DEY472470923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bfcf672eec6c8ae471178e8e5274fcf61c1c119b11b694848b32b8ef83ead3. 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/DEY472470928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf859c364c7d99286b4dfd262f07952699789f06f663cc965c59dd210a995e38b. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEY472470922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dda604023d9244a90e529facfcb871a0598040439ba34b797c3481c8f1e297c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEY472470924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d19559e0ec9ebe55e0c087c8a1ee8ca8c0c95cc32d616b52d626bf4c245643d. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/DEY472470926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238a82f6dd30e293b18cbcfd197b8f719cb4a1547476b6027a77bdf93625c3c5. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/DEY472470927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f4d9b8a6a5ce54ed027ef15d68f7f61e760ecccbc768156b0bd9622b361177. 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/SE6QE3221366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5779bb12fb65b7f91ccc531acb4f02eb0a8cbd00070705c1ff1d5c0782c37a. 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/SE6QE3221373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48920d61858a40eb24db012c37a1520ecb8e5e6c58689e8737422847799503f5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6QE3221370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708bc8436b6e32995f42709406b3d4c24be1e1b71889108a03ba1f8bf200aaee. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/SE6QE3221368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05122ca8493340204b5fc6064098cd587dec153de18943e667b5a395f5f4794. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/SE6I32212371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e22cc783bb0cca147b9cdc9f64c85caabcc58bd1eee232e69755f295912b496. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE6QE2007576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eee38c9e27fd7b58ff953f92bb85a075101701c5ca627e413804885404d638. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6QE2007788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3056b12b3a71ecddf7177ea55d9c92b8342b57a4212d8197df29d11ad54b34d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6QE2007787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800fcd985ecd01a3bb6874c06ea79770f87f88553522be1ffe995bd1a14fa2e7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6QE2007782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3923e249e2cf89ec8ee9e72d7eb11854b8c4097e63a4bfddc42437aaef42673e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/SE6QE2007831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b8a727e6bff633414391b70a9e19b5f6db52e9ed0f3872f395df4b9436175c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SE6QE2007746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d6763b38a15acd623edb61fd9c27b84f3373a9368851bdd85406c916c71d9f. 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/SE6QE2106042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dfc874881d4124675add83c4c887bc201c3f68fd1def508a3ec0b8aeefc24a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6QE2072948.