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 0xfed1d6ae45f002e521eb220fbc5fbcdf384475c7368a889a8616d647fe8c8197. 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/2ce27a31-0da3-4ab2-b833-8411c2feb061.json and https://artists.proofprofile.net/proofs/artist/2ce27a31-0da3-4ab2-b833-8411c2feb061.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 0x3a9ad7fb9e43db3e5de1b865c9d6d9e3094f96191f97e52ab3e6d45c55482568. 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/QZBRF1897298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbb1084f92c77725a27dbf7caa2778d4795dea79f2ebeef4f90e43ff837c093. 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/QZES91808914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca7076ae26868c09951b9f3dae5cae90dc77f14d9df1c9029d62c1c64ee3f9. 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/QZES91833168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81551c979d8394af7a5766f5e885f8d632d2c523a691e9decb4c25e63c8c6f2b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6N2075817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1b2c89cda08f54e6397fb69948f8b729d9e025aa671b649c4faa193d27990d. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZK6G2002140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2100d80ef87fca81408f1e0fe885f1f741100c38aa2cff4d7a4a4c103cdb7d93. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFYZ2121411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7fd2940294d01a90e0e66b8062e632777b759edd1ae3da7466798cdc7c24c9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:24:17Z), 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/TLREW2223701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b797d8b791fb8b92a5eb4b8fbfa8a39b859ed0808a7057aaf7d55cbecdcaed0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TLREW2226259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4875477243397992f09e5fefb5f8b83fcc487c117af157e7d8b23b179d58bcc1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TLREW2228526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63da286234c0277489c23d7e88e4b91e17cefd1e56ff79833715e12c33998a64. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:35Z), 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/TLREW2227461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6746a113b01cb726258169cd404088cb22972886c4b9aa840f8200931b5f7ba. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:05:07Z), 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/TLREW2229977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c0a376c6b1499c889df3ea2fd907d2bfed8c108b824e587b587266f85018d7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TLREW2234440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4badbd471e57366f57691440f0671eecee3a87a66b25fd44eacef0601c6075c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVEM2310445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95497d5a4d5dca2ee8c0024a4dcc8487178498b3a379bfb201c638ae4ede73e. 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/QZVEM2310446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445eda8d45ef24ef01467a547168af0f01d7d0d3e60541d596f9aafeb349880d. 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/QZVEM2311657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cc9092f7679bb81153f60849aa77ce8c045c0fa9cfd82eb6fc723042bdab71. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVEM2320064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d5cfd0301cead0f79f494d0ca3dbd67577d6d88b12ae0d7995454c271ecbd6. 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/QZVEM2324569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaeb264b9d8c27667cbb0e243f953a50ed8674dedf5ad3639a9ce8a5dddf7cd7. 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/QZVEM2324644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c39f10b5b4606c2deef43a2f314201a1910b7d5852562fe83721521d68e9f2. 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/QZVEM2341570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b3ff8d9237d9c45a2f220099670180e0da0e764bd46ccf7f4328a4b73c3b62. 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/QZVEM2341573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e35aeef0b1bd53fbdf6e68ba15f0f5738e1d1c1531f0123bde0374863f1d756. 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/QZVEM2343251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b3fb856f37bbb45ac2a911f54a46aa7645da32a54e07395c5d836a7bb2eb21. 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/QZVEM2343662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce354432e47f0066de41c0c9a5b6ce03ee73b3684f1c76e1db078fe2ac80bac. 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/QZVEM2315401.