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 0xdd8b620951e251ea76281545ca408ea3259d8e04ea783ccaa474d331c4ab12d0. 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/de9b3e4f-fe98-44d2-b1c8-09a6693a6a8e.json and https://artists.proofprofile.net/proofs/artist/de9b3e4f-fe98-44d2-b1c8-09a6693a6a8e.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 0xddb0e00fc006ecfbcf4bacc85b4c61b8174bac3e9520ac16f7b78623133ad7e1. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USL4Q2300986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc681d975d58a145d9884fc66d78c747fb6e5ec0f90c6092047848e0ab02975. 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/DEUD42180301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f369a6af6877461a8931b747fcd5aeb73b865add21d62725cf59c70d4e2c633. 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/DEUD42180298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cdea896f783d3a72c2172450ed89fc3cb3a503770e09de12098b0c88bf67e4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEUD42180299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdaf003a51a0b1bf20bd85d7c4f26b69aab1d862cd06e9f16e1bedd46deba07. 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/USQY51754823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9114dd1c0cd937816e2446d8b2a309eedbc93c6bbcb2d9e64556c4088cb544. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USQY51754819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4990ac01daaaaad83728ff17d78c36711c543ad372529b77450ef43d138c463f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USHM82060512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3956ef5135f75f7ab80d941c310f229e2341bd5e3b9cf602ed3276332ff485e. 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/QZMZ92474453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bba950d46e43de6848e0ad256adf9cca266aecce49f22883eb754e01e0f3dc8. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:03:47Z), 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/QZNJX2434633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53782403768ef2ed14e3c54ad54111386d8ad680f5f4916397005174e7632990. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FRX872124221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde16822d9a94b56f1571b9fece5b63eff62729c4cc5d883c08b2ce0cd138e0f0. 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/QZNJX2434604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b2b4acff0529152fee3691752f1b5ea2d76ea77795f828591a2c0db034336a. 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/QZNJZ2460032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd9f8d70a8d2794547331a76cc50b9a4e0d4fddec4e6fbdf27e921d62b2ab96. 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/QZNJZ2460035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765cdde6be45acf9c0225b5155f60186eade23c7f34d6cd1ee982cb7ef08e49c. 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/QZNJZ2460036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aaa3bde6ca54c627a17cef87e880cea0e1ea11b2f297d6f42e646dd5f7d78a. 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/QZNJZ2460038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65a081f99960fb548fa438d23f45f3947ad04d99c16cd6275beb0827ebea574. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZNJZ2460041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46882a332d713d29190f39d8285f91f90ef33a1d1c2bb808390650193a7c4688. 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/QZNJZ2460042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53782403768ef2ed14e3c54ad54111386d8ad680f5f4916397005174e7632990. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FRX872124221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3cc7a3fffdce9a26fe6b0a0689f6fa23ccf87215085714b482e2b7456e2662. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:04:10Z), 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/QZNJX2436906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde16822d9a94b56f1571b9fece5b63eff62729c4cc5d883c08b2ce0cd138e0f0. 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/QZNJX2434604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bba950d46e43de6848e0ad256adf9cca266aecce49f22883eb754e01e0f3dc8. 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/QZNJX2434633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c91fd684ba3afd9375afdafb98660f16d8a979a671cf4c4afda791732947db. 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/QZHZ32056231.