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 0x3546e0495206084de0f47e7db10df9fd1a53a834a6eb9d8eadea06f7ed5f8663. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3cdc334-2545-49ff-bf07-19436a4967dd.json and https://artists.proofprofile.net/proofs/artist/a3cdc334-2545-49ff-bf07-19436a4967dd.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 0xb76ef52bf163d209a8568ab70baacdc5a4705624c968fc122e4634d7eb0d9f5c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZFYZ2365648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e61e41911e36eb771dfe5bd4f9a0dd0fdf22e4f6a41557f44c85cfbcf2665. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZFZ22312874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d128a28e28f02850fbf9c225fbd8b5efad1fb92255597d733fe7ad4bc5b7a6. 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/QZES72308301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6019b5a5c162b06f73b782a658d7fac809d2c990c09654e487d53e4af6352fd3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:18:57Z), 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/QZES72308305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558b4673294b10469e32adfe77f0d5a8a30669f5aa0f2152e37ddb5a4a029526. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZPLR2316622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c327199fa5cb4902a745616bddaf9aac795200d6b8a7d5fa77e1e13b954e36. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:10:52Z), 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/QZTAS2386224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd2d4ca4fbca8a6e165d0115e69510f5ff5e7876e8931fd45f874672cb30628. 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/QZNWV2427452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe371f47b8f39684a7438fede31ae147bf52afa22042b473cd56789f7b100c12. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:09:58Z), 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/QZNWV2427453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45ff45207535eeb7d70d279e6dcfa12ee72de201596f6880613d2e73afe2b49. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:12Z), 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/QZNWV2427454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04083873cde1bb519e3ee357d1b02b3c68a16d6df1d5b881be69579a1d7be9c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:22:47Z), 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/QZNWV2427455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e78aac6ac1daf9801b11c40b550f0ffb817082c3f5007b4f38cd3656b4751fa. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNWV2427456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd1156fb6962371ac114ecd3c1829fb7241e1ce8b0b9b866deb06c93c7b64e7. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNWV2427457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e5e6b425dfbdd49ceb4f0b33d6427ca7396742ad557af1b439c5f659bc390c. 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/QZNWV2427458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7d898605711ae5471ea5c3b6a024908f1c70a451b9e9dc1d57b52ae8060d1e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZNWV2427459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7824602142433a795a5ed9eda30f16f4afc7ae6974a71f9f887dc51f5d4737. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZNWV2427460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b84952c433f260a39855e370a6e305c26a63ab3d3bbed6b64b17405c4ccca5. 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/QZNWV2427461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8031979127e799c3cd39a422a98fc0dc8e8228ef1c839a1f9e3fb271f1322c4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZTB22478699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88b6aaf959619b21c7ed457956797a77193e2a4ab35f03680daa565bc349c2d. 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/QZTB22478700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e287c0d8b07dd5fd8fd01735d0f0e8e0f322c68773eb46469df36d6020c417e. 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/QZTB22478701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0454ac5f6084c337b123b8c662c05e2e6df3ad8f349b5ed9719dd53f85c34d46. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZTB22478702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2eb937435cef8bd7b53ce3a702c1e85cc92707749950c98cd1deab4b60b393. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:13Z), 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/QZTB22478703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3253e5ec4c62e9713c3b82d1d656ad090ec9dbb0b4bdf9f8ebc093e0443205a. 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/QZTB22478704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7890d04b58e21148bedc31cbbfaee6a7152ab41666e00678f5e1021ba76bafae. 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/QZTB22478705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4477da8b6cbf6188cfdf01cbec614ccbb2fe7351939e3a879190b420a243f5aa. 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/QZTB22478706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f28fd8fe1425492b6c742c640014d2da15473317536825716b764468ba8bc3. 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/QZTB22478707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaed5454b4d42f23f70befb9c2c2bd05a21d79787d191adf8cdd835e83fbe3b9. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:04:52Z), 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/QZTB22478708.