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 0x617144a9926f5a10e7810b2fc8f519ef09a2f4b5febf495abc0aaa26bc69f352. 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/6c86ea0e-2187-4744-819b-32eb90fddcf1.json and https://artists.proofprofile.net/proofs/artist/6c86ea0e-2187-4744-819b-32eb90fddcf1.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 0xe0500a470231d9c8fec6678b9c6ab34720f15eca42c3c7351b841588792f4501. 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/TCAFT2145326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7c0002adb6ef29d8a47ba8aa5ad8e8328d6141c9302c7ba564329e258f8306. 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/TCADW1869708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbfe9cf4af75c56560438bba732644f6d5f863ec02b823d3ae29254fc088f6a. 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/TCADY1804070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7272b965049854e80f4e0209f88c47a4a6ba8c2f3c92c596ea6048aa2e5c053. 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/TCAEB1942396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5264b19021538195edb0a04f81e7abde729ffaf51dfbd43a14fbc89d5b02396c. 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/TCAEB1993451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0759b17fd3665a640c85ffabc7ba2efd2eb7ebe7def01725155018da0b277d15. 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/TCAEA1837761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48cd63dcf36f5ba6a9273291463b1b6806c374366d1c20cfe81c27780291acd. 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/QZ3N41600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e25ec7ad6fa62e51d3e660d586b20e61417d5c7d7de99884d81dcc2abdafef9. 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/QZVEM1899479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe329264d6cd26990918ec47e452f5d684cd1dfdc165b78870e99f0845e644923. 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/QZVEM1899480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544d422479727f18737335ad5a396340e4a7cd9715d8810dd26a829acddcd250. 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/TCAHX2438676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c25c9ecfa666a755c7c8499f1f4ffa51c50050282733fad0905517bdbfe7716. 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/TCAHR2391887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93d9524a127ee810011a56eb62ce6542e6c0ea1506f481b9a9a110e1a572687. 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/TCAGI2253184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a080202be336465409c3293db268c9d66fddd71f2d3c46a67105faefe853bf. 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/TCAFW2118307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0500a470231d9c8fec6678b9c6ab34720f15eca42c3c7351b841588792f4501. 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/TCAFT2145326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b99cb9d814bc29e7224bef632eae9680646deb1d2efb7dbe926cf70531612d. 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/TCAEP2068358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b99cb9d814bc29e7224bef632eae9680646deb1d2efb7dbe926cf70531612d. 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/TCAEP2068358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7413ff41f083293934fd5c62fd0edccf9769d0a66c1d4f643622487b85126845. 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/TCAEO1941003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa920af5042bfbf7f3e792b36c49edf58e442bb8a17dd2e3fd0bfab96c12ea37f. 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/TCAEM1912085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0759b17fd3665a640c85ffabc7ba2efd2eb7ebe7def01725155018da0b277d15. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCAEA1837761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbfe9cf4af75c56560438bba732644f6d5f863ec02b823d3ae29254fc088f6a. 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/TCADY1804070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c69b000aecddf7fafd37f867fcc7dbda0c1817713d9eef4a446ab3de3ca830f. 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/US35K2447001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097f8228012d1e253fa98de56088dfa5caafe6aba00e0d25cc66d73e19fa5269. 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/US35K2447006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ff9937d54c4e0fa89b67df6c36374df71b3910a17811652197296ab31e9d76. 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/US35K2447007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0660f5046029d422e91b404c0cf9292167e9ea06accb49b13e5217dab48d9f81. 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/US35K2447008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6b96064ddc1379fc75875e7dbc3e4f595b59628a697cc0f5ed3a5f511bca39. 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/QZD7K2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1062600d98e327e07e16fec53a9237fc9743eb0b942fa33d6de96ebabb65ed90. 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/QZD7K2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e89b095a8db22a31f50d0f39d9ed5cbe50a7b9620fc197b33de0396961f0f28. 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/USDY42458361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dcd7ad6575c92daa4a9840afbc1cfe9daeef55030ce96bab7073f142c0f4b7. 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/USDY42458362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61679f0a8ffc293b6803963a74c9437f5cecff3549df61fe401cd307f1605d42. 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/USDY42402920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aa8dc5ff3e186edd2e25f5255a9ac3b0e5b83b20cfe237a0fe8a5751844229. 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/USDY42458365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5d22520d0f275343458122e3de6c945477379fd4c06c83bcde52654c9d4ffd. 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/QZK6M2165557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e133f91b720612178c09880806b94543aeecc5be38b296adcfe6d0e6cb1e3f9. 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/US35K2147101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3ff1586f63aeeadf61e2dd4971946ea8780517b91e9725c74e2dc1c8668ca5. 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/US35K2147108.