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 0x8a0c7ff079ac5cee4afbed8647d00569eb2fe66721138127488f7a7d0d13d088. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b94f57db-3167-4d92-84b5-2c2e5583570b.json and https://artists.proofprofile.net/proofs/artist/b94f57db-3167-4d92-84b5-2c2e5583570b.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 0xba361a6eec735505b4507b0df595c48bf354ea9b28e809635b07c29c5da29443. 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/CA5KR2429747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61782c5c7686edf65ee4c9900cf401cadf2ed752e6225078a5fbeb6ea375ab6. 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/CA5KR2427374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4146c6343386fcaf9f8a280353dfb6a083235a6c72904b2ee124526c5bd0bbf2. 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/CA5KR2429748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7a75ce0f3adaf9d58c067c51e53fd9a4f9bea893a7c9ec09b8bf4d48dae957. 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/CA5KR2429749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ccdb02a1fbcc70fb15dff72647b807009fa9a9586af2c6d9e79d0365c0c13e. 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/CA5KR2429750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe212a8883abfe0c1791d0411f8126f923e32f0b226a1dbf4db4348650073e694. 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/CA5KR2429751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2ea9236f3c3a8dc68dc2ad53ba889b647eed3a4e89b7d5bc57b2cb623201e5. 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/CA5KR2429752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bac6c890cde76895b8f5af995b62e3f724a4b44e9a20fbbe44277f8d0f80a5. 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/CA5KR2429753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f09bb5ce86f40fbd670f592be78f9aaec66f3756b8cbd32d2bbe321fb32bd7. 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/CA5KR2427934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761a903ed49477013f577c55eaf745833cd81cd8a89e2e23e6028587fe4081e4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CA5KR2429754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351975b4eeb0f256eba6d8badbdfb419ad41bf8c40f60938295a8013cb38cca7. 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/CA5KR2429755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a52d5cf0e628d43a3bcf70fe7f88a2a624df77a23395bb9368e6fc2cdc31034. 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/CA5KR2429756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2606528e573de253ac51d6dd4ca247356b56b03992f673db6354be4f56de848. 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/CA5KR2429757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9cc0fb73796975315d307b72cf8be65af56df7526934a2b4f87149a2d4bb05. 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/CA5KR2429758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cab8692cad2227609e2420e7adc9bce5b10590fc07fe704c8c0021c667abc9a. 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/CA5KR2429759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68d663a0217674079d6e6d84a6e5ae6fc43de9ca3d6faf7a76f39c4e19c778e. 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/CA5KR2429760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cf66a4e766b38e1097592ba259b1ca4afa91ebfceb583d7db4a17e161b6c20. 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/QZFZ41915633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5498455a848ba6370c0eae040ba65267e9756d756d7340cdb5e229ae5832786. 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/QZFZ41915634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcc33d2b50004035c1061e34184d926fdd6b337712793dc288b4472e6b8a383. 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/QZFZ41915635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42749fcfe50f14642ca0d608572f994f8080667cbae4d787f152e061abf5169b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZFZ41915636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347edd66b9da4c98fcf5946432b4a87453626aec4619b626d97e45fdcd572ece. 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/QZFZ41915637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502e0f0a95d539102ec8e292b9691763ba2c0d36e29ee03c46265f033b1f5cd0. 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/QZFZ41915638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2c65f1cb2d3dc2a0cf28105e1064c8d615f0ab24de1415ede3a3df0ad80fdd. 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/QZFZ41915641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354009ce4512424be7e41bd23f122d4fc795272f25aa687023b4d4bcfaff7432. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZFZ41915642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dfc610ffa2354caf9de806f628077334171c86e6c4618ca1f28e289419637d. 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/QZFZ41915644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50ca54ec0119517302503fae5af799965e45743012116bbe318d4e9fb76f3cd. 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/QZTB62247727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5f846c66fe032eefba0d2e947196ab4c5043378bb1c041f74c1cd4424b9778. 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/QM24S2102624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6f7cad7a743c5cb2bf4cc10786da7eeb3f8a5a288e89d3b23aa9a9d4151790. 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/QZFYZ2046319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e0d4f62a6aaa58d4866e91374f9c707f1fcd5d17b868895b529f223d306bcb. 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/NLRD51968567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be7587b9df0fb43a5461b9dc3675665b1254cac5a344ec1c3bd956df842c77f. 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/NLRD51968570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cae7e49c313ad101f271b5f03ec8134e06121121064f55a539547d6dce02db3. 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/QZPEW2206388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33da24ccdd65d616ae995c5b4824439fcceafa3ff14548a44accff269d882bd. 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/QZES92392572.