1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa2c9490c2a4e0e46ba752d6dd57be192d4af061ceb0f7092c844e5709087a39c. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ba396e6-a216-4fa9-a826-0761a70ad65d.json and https://artists.proofprofile.net/proofs/artist/0ba396e6-a216-4fa9-a826-0761a70ad65d.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 → block OTSBitcoinBlock must exist at that height 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 0xda8059cb7886abe2f7b3a82bd294479f2bdda128fcbcd1e761226c0681c1668d. 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/QZES92499186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4e34274f74a3243806b0bcf781bae593b9e78ad060950fa71b40f4536ab3fb. 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/QZES92499188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdb95e7033c3b1312946b2eb3f136c5140a7ac61e5e72209f1eef5ab54570ef. 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/QZES92499189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55321224569a837c7c3c660255ceb6850b7906118922bee1e1a59f6716b886ad. 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/QZES92499190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cad686065d6e1d78dd3c9fd4f6c8a8ff624d314e9252c831fe257c1ff929c4. 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/QZES92499191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a411d586993c0ad78b9fcd162e48ce31eccdb0648091c64768732136440204. 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/QZES92499193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be3ec2b02418cf2b384c742ecc1471bcc8984d7ec01712aa92f64c3bb492406. 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/QMFMF2455051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b959feeab681b527f517fdb75cde5d33d58b2a322e06bd3f1236c5284393c3. 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/QMFMF2455060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f8751a95b35f22df8ce8ec323482af98bac2a244b143202f89b1affc078202. 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/QMFMF2455043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c47b34c8d8f744722deb70184556fab0eb1314ae32f53cc2354590dd3752e2d. 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/QMFMF2455067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67743bc28f59bb78a90a0729b911ad4875cdb463daadebdab6ea39988bacc57. 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/QMFMF2455074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43e3bcba65427010458a94d8680924069cd6ac1aaa811d84b9c1ab8ca0b4033. 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/QMFMF2455081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694446af782bd2d2798f2d266738f4fa38466e1d17912fe7af889e80d9223f5e. 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/QMFMF2455105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702f5b669460b9d45a657a41ed835cecb8ec2d796c2609fefcfdc5128298a172. 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/TCJPC2417649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53844361b9519d4ca588d74735209de17a6b441f09b0ebfa55f7ccb566527e51. 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/TCJPZ2434646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3773319f99c1e557a8fe83b18aa3c2d1705d589b8000e5e1f51585ad724b9f. 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/TCJPB2489783.