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 0x63741ac2949a107d907e0468864ff082b74643aa82f574d6fa3ab5fa120e4f7c. 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/a071f2df-da44-4c5f-bbd4-6cae941139a8.json and https://artists.proofprofile.net/proofs/artist/a071f2df-da44-4c5f-bbd4-6cae941139a8.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 0xf84b7198773f405488349931fb2055a7f74535c2cbe569e88a69f55c0c94a60d. 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/BAA052442531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39be96be7d60f0cfd96fa5f9f1f4cb7e4fa8fe9efd61dd6632d51abf28475d8. 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/ATAJ12100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0f5e361f6e0bb02762ff0ec79bd880370562f7dddcf0617eb1e47ffce54819. 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/ATAJ12100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c10d3dc4061c36d0ea10ed6225373bbccab0c0ffddfa6e9436d482ecae1d22. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ATAJ12100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7dd764c4cd23e043364b9a1a5dfbc689090e4e55addd8e839c657ef2a80404. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ATAJ12100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75e5105093f52831f61289761d91a2fe5a844c3f3ece4378541c1b0fd6b7e69. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BAA052230533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1a6fe781b7ba938d5b03457ca48e751c663c038b1d52f5441d5ef03a05491c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ATAJ12300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49e4dae33e00fa5b6a172a9597cec971fdfba73d6da86c611a72899cad0314c. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ATAJ12300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cddcf082370096ffe695eea52098669e87f07fb1047b9ef2fc0b59acc14eedb. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/ATAJ12300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc31e24b22260fa6a7ca8977b6c17e082cb0421f453d74afc09e7b113e75b3ed. 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/ATAJ12300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921a00e21805e327327ede5aad03254a286437f8e4a5e762bbed5e27cd42dc01. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:02:31Z), 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/ATAJ12300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53439ad9e48facdd4d9f3647abb74a670db457a53bf2a39076ffe46855a5529c. 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/ATAJ12300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e10e856d5e2b5e7f1dbaec1c7ae5f9ef18ce9f06ad0897f391187151d56a4b7. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:34:41Z), 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/BAA052340767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1b0153da9f9eee8e978680d004f23fabcde917761451c0a11adf8cec42406e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEKB72424482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5246ea1f43e9c910796580330d7ce9f08d17d53fa7f46051ea065297764b8b7c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEKB72424485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55c64ed402bf81658757b5568bf0af9c7252f8fc0ad50ec8d106d99a63fca51. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEKB72424346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b03d6070e07fe67661261e4c7a4c92bb36baf7a721bcecb35d8bd78efc31526. 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/DEKB72424350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680b5488c5f568c15e277e3af0f071c6038e6f9937ae8717ba0e1ea1478f5a69. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEKB72424351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a9539cab05d9684a8cdff6c6a18053c8bed3d7ac01491cca54abc0b0866cad. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEKB72424343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf738f899d6dd66bdf5456ffc15e11f64e61c734c0241d3a085d47dd4b6973df. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEKB72424345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04d8368e111e1f4db32e93e42c618ed1c414aeba02c3367d08ace42bdd82039. 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/DEKB72424348.