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 0x6a2587670ca947598d3cebc2a8a3c12b415b5db5d453756679e272e9d7655943. 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/e07db0f3-d6b7-46c6-ad29-01809ee3ead5.json and https://artists.proofprofile.net/proofs/artist/e07db0f3-d6b7-46c6-ad29-01809ee3ead5.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 0x078ddea9280e2b07f94ad0c72014dcf45960ce4fb40247a61bec263d945234a1. 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/IL1012100566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1e0600e0f48607ebaa51ff75df34a2727fa07e07ab7e51d577d9c8ff7f5fc5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IL1012200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f513af19dea6d8862c6ad62dc506371e3e0d790acae37ce3f2ef4131058507. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/IL1012200441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d09866542f686a581b9dde8f6a7945f1914f64e3564e5dfe33a10111bc5789. 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/IL1012200605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241469be29a80b2337fcaf685a2cb97ddb45df353ea5e9477c27a6db5a725c31. 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/IL1012200968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecd7310297ceedd10371b0ef741cad661c062db9a5e2ad5230ca15a0b6c80d1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:30:48Z), 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/IL1012301941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ff2db7b91cee97aea6acc9d3394eafd0dde77e3a5d987795e25b69ce271740. 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/IL1012302179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076e552532bec856da41e6d38d11338be4b43aaee9431f53d93e710840f1892e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IL1012400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda88940345bf4a09dae98ae69ee5efb7849a1ab5e756733b801a3d749da3f0e2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IL1012400514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7121fac9605bcc358b3267b73d05c8d67a0d443ad4454d58a0fec51ad1171bd0. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:17Z), 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/IL7532514094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85df1259dbf2afde98b5db9c3e268fd85fb7d8db9b1381e56e8df6329d41dd07. 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/IL7532514095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6cd18b4c030edaf2a48d428fbff1c656111b16cc2e5927efa459dec96d34bb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IL7532514096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ca627ca6ef9158426b0650346a3d7c69d95c6dbd9a43e14c87ab4a4bf0a6b4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IL7532514097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cf55f9c033b20d59a3396481da93157d762b1a682067122de7f0b8f41d87ea. 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/IL7532514098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d08ba3573ffff9797991ea10848dd0f4cf4900fe11f82fdc6134a9ce515ac3a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/IL7532514099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783d13f196fd30ab6c28ae194637c60749ea3ca328ffff149409fe300267bb5. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/IL7532514100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8498c2999ead408a31efc74dd900c0cba4ef8b105e1e8fce72f10d3ead1fd7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/IL7532514101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cec7d911685da9c10ff005546b35982d0dd173caa4c871e1e13eab81106e343. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:43:08Z), 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/IL7532514102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e1a42876ff5ef67e811dd23c09c7107d70aef71f87e0c0b221c8cbd4380db3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IL7532514103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26012e6472d7e28c73def1e1aab30f90b091276e39c9518b578636d8a8e7a7cd. 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/IL5842448413.