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 0xd6a1d7ef78f143b61ff3de6d3be2331ddaa48015f63a16af1fd8483cf2c100ab. 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/fff88e92-7aad-49c4-80aa-b22146abf553.json and https://artists.proofprofile.net/proofs/artist/fff88e92-7aad-49c4-80aa-b22146abf553.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 0xb5074f5579e2ff93ee30a0d37451c0f76192af8fddfc7a79801e38e124c4bf5f. 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/NZAM02000456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7697774209fa7c4da48631b8394dc6a282e47c2fd019b590afc2bfcc346cf238. 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/NZPB12401146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1f81c853c738048795ab0780d7aff49dbe9ab83bd9190b6a188dddafb80d8a. 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/NZPB12403375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5fd97c101b2b172cf4fd369ca3fd77ee08eabed2dbc39f7e958918724864e6. 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/NZPB12400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a6dd1615122acaaa3f59781f5aa454b5d7f83609f34fc9f54ca7199373a82d. 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/NZPB12303780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba3f0a966246c622e72b37f3932dfe31fcfdd495fe78da6e4dd52a3082c0c10. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NZPB12303138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09d4fc32270e68d60d31fed0815961a93230a574838319988c5c4dead644fa8. 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/NZPB12302959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d893be0d25a5cbbfb879cc6fe4bdc71d08a396a098df7e03b7b7acee19e2f2a. 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/NZPB12302325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a21827e50e64d87a7d17d3cad2093cb9f327fac6b2ccf74f9d4c8b28b23547. 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/NZPB12301711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda2c64efab8f1c827579cd12b58855220aa7bda1331d293ea6260888f1a5825. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAGK2272145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03d2b080c6a3d69323cd263df398cdfa3a0d9a5a8c0fd3d3f2d318f510447a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAGK2234579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127f5cf877375fe40e9f7f0fa08f501efbcb93a62a80b7987e26dfa78ef1d703. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAGF2268329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e336b1ae1fc8910bb745cad8ae2d15f64e14ec74c78967d0a9b812fddbb545a. 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/TCAGE2246468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64f1200a1de6e0d0ea94c932e639304c895d8587addc27b629af88ebc55d4c0. 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/TCAFU2132131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db2c0d2ab1b34d17ded77fcfd924547379b15019a03a3cd1582484cbbbdea01. 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/TCAFT2109895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95618d294ef22b4b367c4d225e08cd4651602deb3a1ae53e2e92d704f910f020. 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/TCAFS2120216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade30f707239ccaf4efdd411bcf2236673a84f8a4e26624474bac4b09ed359a8. 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/QZK6M2045232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632cc6acc5dfb910bbad284d75c1684850f918e97db078a97a18371fae212cc5. 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/QZMEM2158742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb64ec5ad69609b45a0f87580d4ed206605cc9061b56271ebc3581896710f2a9. 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/TCAGI2227069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefce680aeb091b6e306afc82c7a81d3ebd171399172fce4724f500eccd3714e. 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/TCAGI2227005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad50fb72f22bb09edf0c6672e7a17cacef14e93b8e78b885d0e529e28a0a6546. 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/TCAGI2227050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae149bd14c8c297a3f5f633465b02914b8d2c2e0a935d65f37f6188a3f5e0630. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAGO2251666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357ad374b0ba55e43f88efb86c9b67d100f125db8d8c939f7a4db1cc71097609. 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/TCAGO2251681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02db8a783240c902b79abca89e9b8923db600ac6cda7f0195e930ba087f5c70. 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/QZMEN2110549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9542dc1fcc60c7d9d19ed9989320331c6beb980fa523414498732889446f89c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NZPB12401344.