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 0x090247438ce2490357563a86d066fa588598b97ff672a534e8ca26b1c1af8fcb. 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/7eddb0e8-3442-4e9c-bcbd-fb71108501c3.json and https://artists.proofprofile.net/proofs/artist/7eddb0e8-3442-4e9c-bcbd-fb71108501c3.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 0xf2de1d0da5adaf45c23a61eb11ba1c8254fe685569a94012517a7539c310c92f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:26:44Z), 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/FR2X41902803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c1ab2702f71d023c3650082625c3585e91fdda68f9e1370869fcba267cd107. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/FR96X1921088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4792dbd2ddc8ecaef4e5b5eed7c79868e4a3473f1d5576d5c22602951775e763. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX282021430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea799658a45b6b662d003fa497ecbd46abccfabfc0d67da23953676cdbbb9df. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:37:49Z), 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/FRX202119800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55d98bbcc74e1a9e04702f03a999b5c809e97e718822064d707e95b62dc08b2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX452160652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42fca40d146f0065e5b8a36e9d24e5914aa6bae8dc6e83aacf4499419b4dcc5. 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/FRX762189447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8abab609700b88c6224f96d8ce17fe8c073ee27942424dc4a8b4aabe63ce63c. 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/FRX452210607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbc6e584acf1556de1756c1ca812fcb7eb8bced9f4baa9cc9beed45973ceca6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX452210609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fde6c4afaf70ba1c438b6fa715a2074d4a3da3cfb52c4bababb2a3a3d85821. 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/FRX452210610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc49c1dcf6684283a9bf127c46234bf35a305e1d49fd9890bae716b005cdbc9. 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/FRX452210611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddc3a50ed935392fb0673512b1bd9fe0d2d30d0a4e848971f8e70201dbdeb0c. 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/FR2X42360439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30b08051f624dc5bd4cd9c8fcfdc56783c596ba36d60a7d21ad7e219de4ef42. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRX282340895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc72e47528530fa3c96f7780cbe472e9c189a5244062f835517e55844e9c0b5. 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/FRX872334691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6470aa920f8285fce550a0512b73bbfd688a33a8ca34c00113f634e3b7c2aa34. 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/RUAGV2305372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab129ace674da29f372bc35ad828f43d876302feb95b00bfd7cbe732615678f. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/RUAGV2305917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b3ef8120f962f0f16236b97ed63c202fcd4282bb3e7d7036d7a4526387993a. 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/RUAGV2305918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976c0b88a2b6845a8ef2ae7187ff6b1ff74fc875a71fa0e95967943c964d7035. 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/RUAGV2305919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb678a0bec2efcac6db20254a7bf337b3dbdb9d700f7edc02268ef0fe592e9920. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/RUAGV2305920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3a6680b71fd05ffaf1ed4cdece384f55443e029bb4fe8c1229b8e9487e1ecc. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/RUA1D2390099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb25c9e2430d0a3effab51b6d9ec6273356fa6d7287a9d635ef4c38cce37cc0. 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/RUAGV2400312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe03bb070db009c9fe59ac079f97ea03a877b6b3f05c94bcf1893e161edd5b7e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RUAGV2402588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc58ce950ff15990e225d44c96edeb68a7d179ec19fe4405c9d94e02029bb086. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUAGV2403996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29daa994d25593e33892cbf400c0af16021b7d8626ed8206ca5a1c97cfaf58f4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:53:44Z), 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/RUAGV2408402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21645d14c276dfdedbd5db42da3db150f9930229ba0ad9f3c02fce476e463c98. 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/RUAGV2409734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cc49e1cb9acc5525c8349a4ad194d20eba28012ab87596a7c26b4fdd3b4996. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUAGV2505456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9754cbdeb33a68ea3848c96affb7aa72efc35a9d74061728f31cd3d9a6124a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUAGV2508740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50af5e94bfe5a97a7c9276c7b4b645f9fcab74720f5eb536d74803535ef769e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:54:39Z), 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/RUAGV2508745.