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 0x6c0f104fe327f8c5c25a5ab8f7ba9f28b46631d75313959336cab08c36c12840. 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/012b1196-f3a2-4236-bf5b-e346a47fed7f.json and https://artists.proofprofile.net/proofs/artist/012b1196-f3a2-4236-bf5b-e346a47fed7f.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 0x9ce21f79a33bc60c93a428a6f55541d7e0b74c071df6a32bc9253987241cddf7. 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/GBLV62314319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a761d969e62e03208bc6331ca9941bf4d23e456707d762fe56da6ebdd6b6d80. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLV62314320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2646fdb5d92c17e0e57262b1c8a5ab61b221c5c47c3e3232e6a9f47161108e20. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLV62314324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6949a96d45bdcc68ce852897c293fad4f600d320a1f60fd65077ade7b0a00775. 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/GBKQU2173517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8b070339a199a491062de6ec80260ed2e33655b12ceae70527602187b1273e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBLV62314321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3306e1d36d0b4ebaa41767bc9148bfd854cbfaddd6274c5fabcc1b087081b9c1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBLV62314322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ec35902bed07955c9cddc6f62321e0852237d7099a4301be6a26ec4ab2a891. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBLV62314326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb4e65522395f6afd41ccb9a1527f2e6f96997e74e947747f0c3033185fffd7. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/GBLV62314327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23de8f92d1795d61ae8319f349f3587fe201f5c2fa43f360c774aa0f50288b14. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBLV62314328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d565a3eed1501f2a40d7aa591486bc63c02fe6b8e9a6e1b68ecfa48c24b40e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBLV62314329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d52c7a36bcd302b02006c82c02bce486ac2ccf5bd4c602bbe49051e873a9dc. 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/GB8KE2159347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e88a081e4babd28f77f4dea98074140ad981ac6c9db627590a17e42c42258a. 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/GBLV62321192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8911ba9a0a1190913a84a7f80b1faffed9872df9cff605176e20305b33f82d2f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLCK42221463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec6f91c9bc8f3105b2e5f3fee2e16566320d04100d1ff27b17d067e8060b802. 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/NLCK42221464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8adeb4cb8524f536d540d798f48fa8b1759e89f8e04f87e2218284ee82f1011. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NLCK42221465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a04fe21082511c5a461b6660c9a54576859765c26587f7f3ac815ef69f370e. 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/GBKQU2226894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9caf5a4fbe44069d836aaeca6a27be71f5b2dc6364f533c6b977d161695a3c. 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/NLCK41092301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1a1e9aaef2a33be60fc1eb8dd677dcbb059e300e161dffdbea75950fcfd1a7. 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/NLCK41092302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0459b57ea7b2348e6026e5ea245ac0f293fbaf4a4bd23bdeb8d7b4e65344a7fc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLCK41092303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6949a96d45bdcc68ce852897c293fad4f600d320a1f60fd65077ade7b0a00775. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2173517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4122382a789cc98ce1f27833c88155465003f97ab25aa33105861e95433861. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBKQU2173516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8904843247b087c5787bcc8cce2db47d1acb79158b246e2448386328df39afc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB8KE2152646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b63fca25769dd2fe11a5c157cde38e10b3ae09c1c8676b768049939d8b483df. 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/GB8KE2152647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe323447ff1c3dd2805b54cbf3633899c5c6c4590dcdc813ac1360da4f0310efa. 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/GB8KE2057403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8decb0cfca2318130083e6b7632e925b9b6a507d593dca4554829571c991018. 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/GB8KE2057404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16f44d07599837507abdfb35f33c210e8743f415349e924ce4c4dfa2cf451a2. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GB8KE2057405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc15ae932c5a8c7f583ca9f6c15f9d5c29ffc6047cac5d8b3a97f02c306bcd7. 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/GBKQU2065743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6466a70471f393948aa18e5c6b8927fb3166d5ca0ac4c33573d382cd3fd7f0a5. 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/GB8KE2050010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15f0e59eba5fc163921253860d24187d3189ebe1e2ee7c60cc9cc77855f21ff. 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/GB8KE2050011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96cf723a2b185400fd4505766c541ed4c175047e5a23eed66d0f73eea184a0e. 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/GB8KE2050012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa6e438fe94b8b5f1d22745a8639a9263e66c7301ae9d3bc6b4a1866790183a. 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/GB8KE2050013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc66f81037b0c799d2e8607181b31acf610a8f8524386acc24c9cc4a941f7c8. 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/GB8KE1958052.