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 0xdf51c2bcbe9f5433f5b4aebd94119a63c473f48418e4135ba5b85510f7fb04da. 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/5935a7de-3d79-4e33-9c4a-7fe2adad98db.json and https://artists.proofprofile.net/proofs/artist/5935a7de-3d79-4e33-9c4a-7fe2adad98db.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 0x22c62ed9f6a1c96c7ba029ea404c92ca96d1418e214956e831ecb20ff3749433. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPJ592001577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e79c7fb0aa891b89695e1d866cbede8f246edb1f2da1b287f25be193a5bdd7f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPJ592001579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ed8d18485ba6a2b2ceefbaf7d565dd164689ec39c75ba7148d16ea80f65b27. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:58Z), 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/JPJ592100472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736f2fd90a9949af5ec4833e59d0316633361d4efed3dfd330a0d0d8666a4733. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:02Z), 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/JP92G2200321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fa5614878aa02950953743a12792cbc3e7e58d5ed0477114560d836c8af23a. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JP92G2201904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fc9847d60772a06d622ba4cf461943246ef94713a3ffaccd00e2caa5fbe5d3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JP92G2203520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb603f49fda46b79249d3081552f7e28607af7bf3a6a432347c8e25d21a11485f. 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/JP92G2204202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd864455c40aeb0c013ce4e3bf0061a32b8d219828fde5443b64793ff7c62fdf4. 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/JP92G2300327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb177e8962f91cdba3ae81eb5694bc529ade76e50290c540d9b27e2a65c5f57. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JP92G2302413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b4f8eb02b1995fcd4d5df919a1f2207b0564bf6febb79df456e6e711a7690a. 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/JP92G2302415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19b5d2acaf850ac6987cb466a6325ab9d5572bcc10620d1c31009d8d8ae5938. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JP92G2302932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e4e8b6e8aab46486998286b3bc60ad4bfe41dcf914328c8e581c36836c058d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JP92G2418773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc503febebc957c504523fc25d28460cb1b4dd728d51d92e5935ccbaa89dd28. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JP92G2418775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089ce496b4584cfbeb1eee35d7e4244caf758a8b2ba4a247fc2a9a2891e24c1b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:54:34Z), 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/JP92G2418776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892385fcd6ad66046342663d5fbd0b6ed1222e01be39f2aa3f3a304ca1e592e6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:39:25Z), 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/JP92G2418777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe836644389302db6717b2f6b5456bf7798fb09dd3367ef7e97b106561ad3ee60. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JP92G2418778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfeb5c124bc91b904fc7e02c909fbaba039b7d0091811717b0b81818dbb95120. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/JP92G2450768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fec1e9aa476f373c6fab78a9e24f916e501ddac8181ff86d73fcb5163219da8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JP92G2450769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2177fd3db9ba1034b168469b78fd05009728f325e3fdc4a12ba25f12bddd4f9e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JP92G2520884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e84431205bba371c8fe6e9109cf5c1012cef867b27a45ae0bbd035a2786f2f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JP92G2526001.