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 0x41b6c48ef9d417fa9c3abc7ae4fae640ad8eab20b95e78cbf02231ab418b61ba. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de263d7d-1e14-4250-a077-ab4e2727106e.json and https://artists.proofprofile.net/proofs/artist/de263d7d-1e14-4250-a077-ab4e2727106e.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 0x6c38347d569368deac29fb1a9378aec2f4a571bdb71780c2b9bd1e64ba4579a9. 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/KRRAR2415509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d6483eb98770c95b935eeb09a4e77f72aa3c784c2eddae89d56b8fab740d15. 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/KRRAR2415510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385b9399cada9acd5798bdd3e71de1b1aef0e18f40b423e61ead3924220997e2. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:47:28Z), 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/KRRAR2415511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32167f246381eb6849a1f97ade3b4f5fd070e54affd65076b11f00475735295c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRRAR2415512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd040708bd6de2a363a2281a22900c763809e1b45a8865cff545b529a9938725a. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/KRRAR2415513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7749ec3ce648472bd0a38605d7e66990f10eb8d25c4b004aa19fcc6c1d73bedd. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/KRRAR2415514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532e506ae1debb14e6479655c8324eba434a14e05f36ab34f1d04122da9b2fd8. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/KRRAR2415515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76b600e4f72895c25b5b77b4177736c971d656b2f36a241c87b8c7f11153062. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:00:13Z), 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/KRRAR2415516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837d86bc1b3f867bcd4bbab9952119204f9e3a889d58ea840ecae1a43f2f31b7. 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/KRRAR2415517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82372f85b36d805fc8c41d4adb1c17e912aeaae8b3dc9bb224be568ad02bb620. 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/KRRAR2415518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7cc208dfe43f85c75cf4841181356ae591b03874e37a9ab79c0802dba9b3e5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/KRRAR2415519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9686ad8e61a49799edee312cc6f0cb72bd27f9abe36292d465ae2e2ae174efdc. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:22:41Z), 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/KRRAR2415520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4353620db8223e437c19aafd2e1f34c5a65f7672c2196e3020d5f5b24c740ac0. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/KRRAR2415521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada064eda29a0e877d54aa8c08b35f3cf49bc84270ea63298b7e81f9778f9951. 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/KRRAR2415522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4b8b2fa190a38f89287ebd070d8be23345c6a724da1754749b2f59d56c189d. 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/KRRAR2415523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a7434bfae7b1c3ffaef0d26d798710419ad82ce79610a168a7cf66aa4274df. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:06:41Z), 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/KRRAR2415524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17845aa7e69b8e6dab8ce8d35f2cfe23db013b6cc54fb30a17a8bb447382b50d. 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/KRRAR2415525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe09819cf93b625fda19f9c84e63ee8189a99b4b064a21b0c4658a5948ff447. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:41:45Z), 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/KRRAR2415526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8dfc0194cf5b8b9ef0767e283a067c30d1729a12cb2cd84fbfdc5edfc43def. 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/KRRAR2415527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8afdd65581c16a8ca80104767b3af0281de97f0afe90c42c10f7489c1299055. 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/KRRAR2415528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c96bfab1abbbd6d572c05bfe288c5399a4dc0621567426a829fe4d6b4e3ae20. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRRAR2415529.