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 0xd9635539f04026f55ddf18beeb758b7386509ad042316efc4bf06acf2ee1f5ff. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56bfacb7-84e6-4d39-85cd-5185f077e74b.json and https://artists.proofprofile.net/proofs/artist/56bfacb7-84e6-4d39-85cd-5185f077e74b.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 0xed1ee609c0b36cf8567d3d32aee4d5528bc7f70dc6fd04bd2a20d706bd6000be. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKP3G2007662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42818197ebca51620d11091d44a32a8fea6ae669bb553a719fa79efc3bdf1a08. 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/UKP3G2007688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d4cbca0e91312999e148203df58e25c915f1f9f21c1f6f5dd35c6406626930. 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/UKP3G2007690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d9b7f49146cd5f297d553b4b26377dcb9fd9ee550195bbcfe2e339f5520ee2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/UKP3G2007976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3156d5c9dfbfd5d4c03e976fc7c6001340f4db44f380b2666d6f49987d3058. 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/UKP3G2007978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e06f01515e9084ce3054519ff9309ac9b41faa714fb6af2fb018208b91c7966. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKP3G2008260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a55acdcb07e6f48fd97faeebd9fd6751d423fa8784b42464c5be6e931b812a0. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:30:28Z), 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/UKP3G2008257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb149da5f6cee04e7f5d04a75959eada0351f819499a11ceb98bd45152e470c6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKP3G2008879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5deb5093738ea98d5281e957d2dbee48f1b83bb0b61ff4c32577e244cc96ba. 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/UKP3G2009143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e16bb6245345b6e3cec0a8ca2896173c0a7262b20021488987c339927968ebd. 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/UKP3G2008928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42afcc9d43a6000c7ac190152c809b06e12655517be409ef2b88b77ce1de467. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/UKP3G2008932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e53c8a57c726950f96e14c610deb21bd52cdf2181532bc94cfa332b109b778d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:28:14Z), 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/UKP3G2008935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4db22d89a43baa464495e46056300e02d8896f243c718712830b3f33f83a24. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UKP3G2008938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4982a98351f939957dd74853a068ee82ae458d1057bfbe94fb020bd8444a1853. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/UKP3G2010748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d41142ab75a0c4ed38ee05d3bd15e8607fd091469eaa13330d4815b5b4d08b2. 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/UKP3G2008943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61957012eb8d44435946b293f81e1d584244f70dd2ee8985dc6ee03e1c210c4. 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/UKP3G2008947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911bce3f700c1792fd6bbd8ce48e4ce893cb906b9eb330f8b5ffa321981fa773. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/UKP3G2017832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde31f36ee0ed1f920b64575911a7f94e09f8e2910adba5d8f469024e9abda7c5. 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/UKP3G2017829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f790d1efb2a2140a746e4c34078ef012fefb3c38e0f30f7a7e5e9cf6d6efe70. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:26:02Z), 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/UKP3G2017839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2851238a4c58987f7ee12e9a165e8490d85f9935720515953218b40a0a32291. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/UKP3G2017840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc9850a86a596db4a6edff90dccae67a02e8f9b84effbf35f2181a9e8837d1c. 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/UKP3G2017837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf77e6124585c72bcb84a62cc93cd9bc009a852a0ded1ff2c83662e048f3b1c. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/UKP3G2017838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac147bba4608924a522f0d7c3771cb9ba68edf6fef94b5ebfd54b58262b855c6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKP3G2017836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc369d58c622db25a27022a40a83e2e0116d572c868ea07fad59eaf7d472dd2. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/UKP3G2300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02fbd79f1130c25b82737ce5dc9a58c442b37a7a1a604e9775344cfc06b40a3. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/UKP3G2300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83faf2dcdb3fda8169f6d74d8b70be71aee3ada15920451d3a0e1a55c764b670. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/UKP3G2300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e76c498ca554951613ea3d31f392d23339ec5d01918bc6f0a5e3b754e942ed. 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/UKP3G2302300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acf36b86892c1dee5ecada879879fc5b4fe120891a5d8034cf877c69a184cc5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:52:13Z), 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/UKP3G2302372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d939b1b59ac2db5c69286f56b564423c1b169866475ddaaf985c84b193f5ded. 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/UKP3G2302299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb27d210327a3cfb5999350f7db0c8fe15cc174a8a4f2c4804b1908a93ca4c1. 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/UKP3G2302301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd13092c1be59375796be34ad3214685ec1c975f76288e087d3289122a7dff04. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:13Z), 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/UKP3G2302303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dc8c7fbad67490d8ab2ba159f8d8a790290a210422e5a9d6061b26fcb17012. 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/UKP3G2303313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe9040a210a1c21173d3ce7e9d92e851665534cbcb9a8026dd230beb32f1801. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/UKP3G2303312.