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 0x5ce183cdf0751229801575fc42a89cde9c5b2d51dd8c0a413f98ee60aae70b77. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92f8bd76-7e21-4312-aacf-1673a056150c.json and https://artists.proofprofile.net/proofs/artist/92f8bd76-7e21-4312-aacf-1673a056150c.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 0x0ba28799cb91a4d2958db3e31673f6e77026a92f73ab3ec0b90dbad671b6d758. 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/QMFME1532654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe267ece3f88e86ff880b84d660eb83cb438a80782c114b1f1858c2f33776b0ba. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMFME1532658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6a9c6cefa367ebb7623ee884825fa805b3460e940aeca583ed07f88d6440a7. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:08:31Z), 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/FR6V89602649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f9ade9544c7845096c5b223e0e6ca67efacfdafdd6560154a67a2bd3726a51. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/FR6V89602650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358b0e81e2dab7725ef098291a4ba9279c85275d20f1c70482060058e9fc7d28. 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/FR6V89602651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8c8ac74fe88084be03b8112794fc6347a894278c03b6271732480d78bc7f9d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR6V89602652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf26cd4d8dc923b07941265dc534151aa4a3b4e5c5095467dd60a29ad0b36e24. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:40:38Z), 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/FR6V89602653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3770b1b4a9145a22965347e9d036d4d6238275ba55656b7c5e020f30e6dd5013. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR6V89602654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5829b5238c283e4dae9d65755b657e481d655590e2edcf0d2adb4f1b06bca3b6. 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/FR4GL1011988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e113d98f4478d0aa9bb0742469e5f134a116223a0f3d0d4ba5f1a390ebb2cdf. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/FR4GL1011989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd64f684f4ca57f23d99837fa2aa7b03dd01d9fda9020a0894fadf5890f40860. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FR4GL1011991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23897e42166da0da73903173105b162e393adffabac82b2d382fdea0ed0706b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QMDA72512962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4ad8d1356f332f4ab4cb89676fe4bc5f7a7871dc1010c6b4bedb2e2be12528. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMDA72512960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fb7eddf9a37847db6024fd5279d0ab379e63bc1d7f96d8b88cb81e329b4c32. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMDA72512958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c6e8df548e849bbc6de4c11b673c4d59a50b35ff40c9286af3b0998bea736c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:34Z), 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/FR6V80117442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0dd6bd47d29e31079b8dac2aedde7a2d564a9e107e199a3979a574c97684f5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR6V80117450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f609322401c02d5a9e02c531a5ed1f1e065a9e87ad58892864941cd61dbfc9. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/FR6V80117451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5c4efa29956d8165ad6448e1ee2f68427e1a231d5aebe4b650d9c6534d72ca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMFME1532660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b096f550e0220bff6159ae9421defc266b3c484cb85262da0020114312248f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QMFME1532665.