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 0x58c08eb3c0e06814665e8556b2fa8a456ef1e588bf6737c9cd7d3a66ca4db6ae. 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/953e6d90-c4ef-4a18-a125-0bdd8c752c69.json and https://artists.proofprofile.net/proofs/artist/953e6d90-c4ef-4a18-a125-0bdd8c752c69.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 0xb621f90798fb4377e1ae7ed8c25389a4bb722ad2deb53eb61941192d6f4b64f8. 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/QZDQH2398086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69131fdfb68fd1689173b113030489dac82bb9581fa1c3287b1f5af1f22c1c3. 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/QZDQH2398089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fee81b79dc6b225944e4a8a7f318d0e764df282bce9c334c29368ad3387321. 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/QZDQH2398090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788eef02964ef234a8394eb3c0d279ac57e4c1bb5707b35ab3596b5587692924. 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/QZDQH2398092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f813bb8421164c1819d5b7c901c24f53fe9756b8750c469ca502f3a88a3cec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZDQH2398093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46680f7f83859b18267aa7f030878898d705575bcbe0042ca0bb11f1526f7bb. 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/QZNJV2295578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f1b56279a5d02c00ca50049d4fb5bf0fdb5652fae7295846cc9d24d5985927. 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/USA2P2129000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312e5a4196d0f2747ef87d8f1637c6a5e7dd2b2b27df1a4e67359a5af37ca8ca. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZDQH2412719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2508fa9a6b485cff048a970d2cd7fd67953329278f469b48b8bd33dbc87940b. 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/QZDQH2391910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dde1a5cc7f415cf9498d75ed180346b95e44660100d93fed7d8c77257593ea7. 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/QZDQH2388611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedb76f7c2c0e688fcfdb048cd666a3fab1faa4e5ce4a64c0774df26a25f5eb6. 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/QZDQH2381641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36381718171735e0c97f65770e222286a5334bdc8ead065a7b12b166072b1cc. 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/QZDQH2380971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb651dc409369fd989425f27ac38438d828036fd818971b8c1f8b7de6695883. 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/QZDQH2350036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf13e25c9fb7e977bf19f363a7ec688beaadd68ba23d22144b5d6aafb8f9314. 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/QZDQH2270743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2c7aa3b7ea2109872ae5f162a36a0ca45b4efa8790650804cee4b99b81a587. 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/QZDQH2268343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9325ff79f327e53ad37dae50762ee8b9dbef6a68e9ae38837fbc3749ef13dd89. 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/QZDQH2264438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb71c3b119f87f3b6e9b6d8e8d91bbb77b7c42f77f0dbc48d698a7dccfdc50e. 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/QZGLS2213373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f1b56279a5d02c00ca50049d4fb5bf0fdb5652fae7295846cc9d24d5985927. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USA2P2129000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f641fbff8f21204dcb1cf4bfb755915057317bf949d84c25247698011215f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2117002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1ae1b1a539e7a7bb9cff12a85c5213ddfba2d0c6d7f4e8495190172e921b71. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFL2189345.