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 0xb635cf18c05dbe4ab03f8648c91a90565f35fe11f57591cc12573b0f3220c9fa. 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/5e0e22a0-1d80-4e9d-a7b7-e8319c07dd69.json and https://artists.proofprofile.net/proofs/artist/5e0e22a0-1d80-4e9d-a7b7-e8319c07dd69.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 0x754617a487167ef0ab144a91a2f1871c7e8b8bb3ef3326315f6571477111fb6b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NL5MF2100295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36534b1040fe1d1a79a27402b6947763e2b41d968597a7e41171b004798b043. 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/NL5MF2100445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46838f86ea47a6370d05f66c3a66e2adaf6e30f2ca079f6b0edbc1526e54688. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:54:01Z), 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/NL5MF2101357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae5ef568c3de8fa366fb1928e6c1167afd0d225db4f1e2294a87c1a0614409b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NL5MF2101527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754617a487167ef0ab144a91a2f1871c7e8b8bb3ef3326315f6571477111fb6b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/NL5MF2100295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae5ef568c3de8fa366fb1928e6c1167afd0d225db4f1e2294a87c1a0614409b. 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/NL5MF2101527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e7bcd9ac8452a8e0096bc89602894179103e8694103ccc8f54d049ca18ab20. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/NL5MF2101528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebabbf365c7ed0a84db097ad755413642bfb522ec8d0bbf08ba017ac7e74d50. 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/NL5MF2101526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64bd53eeeadab9e67a82239483274d42487496e976133a96101372374053a03. 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/NL5MF2102014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7915a278e51ea7a807e3f01f6c519b1dea57bc257710bd7c583416164c4c44. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/NL5MF2102068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6f4a3efb3e7bbd9d7a207ac5b0fa617bad1ca1502c931a25e28ce1b8ad8dfe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NL5MF2102069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64bd53eeeadab9e67a82239483274d42487496e976133a96101372374053a03. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NL5MF2102014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7915a278e51ea7a807e3f01f6c519b1dea57bc257710bd7c583416164c4c44. 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/NL5MF2102068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6f4a3efb3e7bbd9d7a207ac5b0fa617bad1ca1502c931a25e28ce1b8ad8dfe. 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/NL5MF2102069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dd8de2520ef962437a13f76ac28f923dea7c145c4d2935400734ae90a6438e. 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/NL5MF2102560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6868ff64df792ea91816512f4c0ada07dcf24d02c519d864a980863dab96a1db. 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/NL5MF2102826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d48318692ac462f8c4ed49db29b671b2b531f1a284f772f90f7d5cc3fcf22ae. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL5MF2102879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ab492678f0c44e57a86173cd087de150a94284f581289257455bfad3482e80. 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/NL5MF2102939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126d939108ddcbd17d7b66282a184cf3474e93d54305b0f01b8332b245fc4ccf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NL5MF2102942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52416556ca0bd53857ded6a0fc6e5bd0a7c863ac3c8295fec41d67b8ba91a5a5. 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/NL5MF2102943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d317bf253d268ef7130696cb29c987deb14105bd4986de15a126e721283be9. 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/NL5MF2102948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126d939108ddcbd17d7b66282a184cf3474e93d54305b0f01b8332b245fc4ccf. 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/NL5MF2102942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ab492678f0c44e57a86173cd087de150a94284f581289257455bfad3482e80. 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/NL5MF2102939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052b7c58cd6e05158ce81ecac765e25e0946f41487d8d2eef5a8114f4035b2ac. 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/NL5MF2103519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f618a9874eb78cd7d20f81fbc27c0663bfb1256b12a7116d7600a5a6e1615e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NL5MF2104377.