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 0xbda5cf4a5184c6990c096f5a9670fd3694a3cf165b7579e81c0f076943b3bf11. 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/bbd9c1ed-a656-409f-9880-22ebfab981da.json and https://artists.proofprofile.net/proofs/artist/bbd9c1ed-a656-409f-9880-22ebfab981da.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 0xddbae25483139111bc4744251031846f56c38adf123256cfa55ffb5c7afdd3e2. 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/QZTB72294754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da4f2cd654568fc0dff878e4d9052c91e2f5ca92de51033802415a3258ca9a2. 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/QZTAX2267838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc054efdb960353eca501b0c87a8e7134135912290a1215d436a1cc93d66832. 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/QZES82161339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcdb2126b08def1b3dbe2558e5f7d250ca3dc2df8ff965f54ad1a197c5cd885. 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/QZES82146152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd42effcc754f8780d1c2c11fda1608c59723bab9c7fa6b766e3b9ea89cc24f. 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/QZES82139094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8114fd293ac18bd1328452e983317d2e65fcb02dd058abfe8b7c448751a3ea6e. 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/QZES82139095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ec51daf81c481a46a6e2d7faa510aed78c69f99afcaeb6e2b033b30db05de4. 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/QZES82139093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235b427136e10b7e359a565167b3d0e7f5b81b2c1dc734f808af5630c403fca6. 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/QZES82140854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e3edb1e3c7d2d26aef6ae44fc27281901bfa801599d5341c74bb0ba51f49e9. 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/QZMEM2172471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc39db097dfa431ca3b044b89ba396dd46d567b15b7988a9c02c5a330d56f69. 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/QZES82199434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6552caa108bd1c8f8e9fd1fc478a47031ca7ed608e405fc0aa77d6ece247fd00. 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/QZES92004325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7010f66b16f44fbde1bb7b127c181c14b60cdda904cb54ce7ad15b83a4d97049. 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/HUA612401732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0ee2b2608603e69f5e8e9bd6b4dc9ed0bc637c4d6f47ab8264d0b3f083f06e. 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/HUA612401724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d949cb7df56289e0fe0950b7125ea26418c3d5bce990e8ed0dcebeb640da93. 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/HUA612401733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0f92761e19e68621279db21d1435e44237a20f38af138d0c6e38b36c07ad3b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HUA612401734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83092e320400773a2e9da86bf3f3f5c7135bef61acec741ff3897271676e8e9e. 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/HUA612401735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d3ee0d737d8552f0218e013ed8c8ff68a4c21a4bf5c1865b3a70e7ec9f8c71. 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/HUA612401738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9afb93960928091f24bc30e1704fb12b1f493cafaaf116b80d8495126600bd. 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/HUA612401739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6339668315e0b3b66df58f469cfd723faf78310c5ffc8a8541b2b9772ca053de. 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/HUA612401740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39d5437278e6b093574c71b0f3680537deb814c0c93cb84c26e1b30924f469e. 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/HUA612401754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5607efb15fab0757482fb00bb913a6d81f69aca76344743abb739ef039740812. 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/HUA612401755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef56d0cdc2a955dc0fb8a8d7769b6ea5611a84318af146e1ba2a3a467c39681. 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/HUA612401757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3ecc78fa0ad00e8eeaac2be449ccef410323d09b98a11d94f7720ff7c3feff. 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/HUA612401759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26629477a3757439e9ff23d032aa95cc9bb795206209b9f69889eedf5440669. 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/HUA612401761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7f4e3abb6bdaa376c2cc0f38ff40a724b0f78d614efbee9a51fc07b529f073. 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/HUA612401763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d35e03a02f5609ba35cd2d841bebfd3fd4ae648144e5d12289d89551928585. 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/HUA612401765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26333115b3fd03883d1691e67d9e0da699d4c08b488266dece4852396cd0abe9. 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/HUA612401766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6d78d437c37662ce2dffa934b2ae6e24521bcd8f62bc89fc64606e4238b328. 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/HUA612401767.