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 0xe3daada8cefe2e6795013bfdc6249e39d7c7c824d71735c77c4f1f4b2533ee7e. 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/d86b48c7-6d6a-499f-841a-348ae7b9c29f.json and https://artists.proofprofile.net/proofs/artist/d86b48c7-6d6a-499f-841a-348ae7b9c29f.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 0x0267e3fd5bd25617e55677d087005a0000914593761ce916ab6a2cdd9627fe23. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCADA1794620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b46bfed528c1b1bad4fda7c2642d461360bfa635244fa45a519b62bbc8ba3b0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:34:26Z), 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/TCADA1794622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365e3bdd5300ce79060d9a58a2f00bfe23fd07f59aef2917162a7e5479dbfa71. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCADA1794644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2ef94b84bb22c692e7801201ac046b4635582269394122c8fabaf7f885743e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCADA1794662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c753b0346f35855895662f360744212d6c57ecf4dda18a14eb7d490240fadec. 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/TCADA1794669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c91240ada5d23fc6ffb12ff633e582bb471c3a34c62903bb6e933390ac5cc86. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:04:32Z), 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/TCAEC1907278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d81ba9cfa58b987c5a9e9d18c396b5f1205531a1b0421bad1b6e082086a590. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAEC1907288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafbb54ce13d278a598d79349cd038d7a3289a3542e75f4f5c26ce81c1970286. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEC1907291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd6bb97fe3dccfb6938b767a42533b6efc41071d562e59121e769d82c4b22de. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFO2196289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fa1193ff23c3c74d1e84c551f67295a88e2399d8d3b1a86419ff64fee66e5a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAGD2201567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33c5e369326f667175da707835d630e33e8bec3376910f35acee8eb3de95f4b. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/TCAGF2273483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684786acb9dcb8709db1dfaba41964e1f6a18ec1db2f7d9d48947702e08390cd. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAGP2241737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eefdc3a62ff3eb414ab3705a282820420ce3cbacdbc23e338f7d01fd56346e6. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/TCAHP2349275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b2274764faa60bd55d0f4a988653cc83752e2bc5098dc52cd4433348460e15. 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/TCAHS2317829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c38e5bf47caa68003f2194919a0b16eb9918f2a22adebb9f06f4e2724be1ca. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIB2444648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dde3e9db01a1786a1ce47b7def930355521d105b197df60e91885b98f041c89. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJM2533675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89afb9c9df3a6ee0b5e4d48fc45153999d68c6f8540585ab690c30828e89e2b6. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/TCAJN2502363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c7b3c1250997966d6bff3e103e012ae3f13df8db2bd86e4fb77ef607508f1d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:58:43Z), 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/TCAJN2562116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff2103a14d6ca015d53c2bfd02f5403341a106dbc037a53cfb33a1cca4cbf11. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:03Z), 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/TCAJO2584313.