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 0x62ac8d50ddb5684feba65d1caf1f6e82c6da439053dae096738f6d28fcecb992. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc8d6b53-b411-4312-a343-870f90135176.json and https://artists.proofprofile.net/proofs/artist/dc8d6b53-b411-4312-a343-870f90135176.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 0x9c24a6509e7976190616d2e8575fca7c1d5d790494d0ce790bd19e3d2026fbe7. 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/SE6XW2366789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cd2fbae56ae8b4b5200cdb2908eaca0b91bb8e5ef289e89026afe926684a10. 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/SE6A92367240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858a16c1257681b4d068da0403d9ced6af820fe3f606cdfbdb2edc410acd9063. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZXT2352388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699f4a59f268eb45ae83f7044f216b0dd4f1039feef3d9684c05fcc11d6da0f1. 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/SE6QE2396786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaa99d5743f9e6cacd08fbafaedcb20f0dba6d83ffd587105d6fb4fbcdc3569. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5752301124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b282601ef7d47d37162f07874e75fe89f62e603040ce1148eb97a0cf09ef89. 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/SE5BU2338113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20929d37076f328d73062075f0eacf419107d424bdfbd9f8dfdeba5f17c88f4. 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/SEPQA2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54310e7f6de8fcea8e2719836ae1b4d059ce18e4bedcfd8468bdf200c2711500. 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/USZXT2352905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2844f596f3ebb00f1f7ea7716c61d481f2142252526d751c5669662cf032de. 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/USZXT2353207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c806a13f09b368afcd1acf64bea4c93ae4efdeaa79094d400b12ef527d660ee. 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/SE5752480524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f53d5179644db6fe882e17ef58abee25ab30a81acb40c69ab48fdc0dff39de. 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/SE5752411674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe31d7d303cb6f4bf2aeb3f64f31e387588720bbf98f8f02bc7bdfbb2298198. 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/SE5BU2463933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0719ddf383f4bc6c54f924eaaa478d809b0fe82955e43a540896d787b014a35a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZXT2351148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73322f6d15a631059d7e0f9b99b48c76f325ea07639d41d32ebb50e55a6f3b59. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQA2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6c0fefd881c7dc3aeb0a7a6626c10833bdade7dfa882d41791626249ab83a4. 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/SE6QE2298487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07acc985e308a5153771014eb11f2e73b1b3540bf4cfd4a7ad6cdf2aace7e7af. 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/SE6HN2249647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b27c90bc2e7709ab1549bcf59f9df1ed49a6347cfcb186b9fccddda1b3ce16e. 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/SE6TI2144145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f3c55f6d58fde65557bddab3a09e6144f694cc779d5d3fc409330c66497de2. 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/SE62M2149108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7451e6ac9a0e0dd46f6560d7928aedc8ba1e6b19602015251de939f7eb6030. 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/SE6XY2177949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdc21694d655abbc3597f7a6a62b5e27cdaa0000db2eeb22d29681c6ccd5356. 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/SE6XW2105503.