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 0x5e265c8d48d632980d08430a4420370d160d46e74140e068465e1e9119746649. 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/bf538e48-8840-40b2-b764-8d0c419e533d.json and https://artists.proofprofile.net/proofs/artist/bf538e48-8840-40b2-b764-8d0c419e533d.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 0xef593035b5f42bc288abff06b4977e1659958200377050931f34beefef093422. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:11:00Z), 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/QZES62026437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10cae691ec6d13acb41ea65e4839cbb21aeefb18843c7df6940cf3d3f67274e. 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/QZHN42055171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee542a149761748967f3d6c292509eeb5a3cc14b8fa0fabab7c0df6a958799ab. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN42055175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c6de8e80b547a00524bb55b85f0a4da9235fbd6a38e4fe5710d9fefbc2fa73. 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/QZHN42055176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71b2ab0f0983d92345902cfcd0c4cf8fe98d84fcff42bc7ea40303d346811bb. 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/QZHNB2065374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8237805561bc779fa3a5c6602f5ee4314856e0eb17b7b1de5b577f3bdabca6e0. 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/QZFYX2151824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06febb650f413f3f498e94b6eeed813bcf2208ad02b315b22dfbe379a85f1de5. 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/QZFZ22241928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c418d2bd12aa032b1084ba76ec409309452e46f63996084ce610c1ff46ff4c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:12Z), 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/QZDA82275947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb340a758f6b44bbfe9462e53b70784206e5dea350df8480c1e9175ee197b375. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:50:34Z), 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/QZHN52265272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45367c6e233d40115f583d11413c796d9a2e34e16e90671dbc5e1e4e7e823db4. 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/QZNWQ2234701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa6d5e59b73a4f16c2885d2c3810d78a5b7a9f74ebf14ebe838c659c14e6b7. 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/QZNWQ2234702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca6694deb2216cc04269e94e5d102e34485053c6347c882a840945a7d8d4dad. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:44Z), 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/QZNWQ2234705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec50d12ceef8e8f8b3e309193599ef58ed1b525c69e4ccf93c94d3809876e17f. 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/QZRP42245028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade7f3f9cfce42c4b39c9717273fc301e1940189fc174a69eded8c61bdc37de0. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:44Z), 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/QZFZ32314316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdb6f7ba1e4d784451d88e74e8089dc8a9274bc75045f9011282217d0e892b1. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZHNB2311523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211146be5d25c37e4fccbfdeff4f588c65725cd368ba77fb9b644f0d655d9971. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZK6L2331129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3efebfb43df8f5d2bebbe1d48805b303dc7b1c5393bd7bdb6ef78ac7e883ae4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:05Z), 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/QZK6N2397912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b834553c3a2cc9cf398c5dff7502c75b451dadad76cdec24b21069540957e4d. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:21:54Z), 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/QZMEQ2378574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f63563f4c17bf2c6cc1deea2f9ab8b4f5c7204fd3ccf03780cbc8d80968a03. 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/QZMEQ2378578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1e9ed68a7c2418a5be77d73144edc3d112a5fcd45b8275ef8bb247496887e9. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:45Z), 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/QZMEQ2378580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdb6f7ba1e4d784451d88e74e8089dc8a9274bc75045f9011282217d0e892b1. 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/QZHNB2311523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffed0ca10c16ef6996198912d7803345de5e7a3da74462c1964218e63fbba10b. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:37:54Z), 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/QZNWQ2347356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936482b1e51f47551e745417b697507acd90ad515a4909f301429c496de6de05. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZFYY2493679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3164461de6b1509431b492de8586f1cad077aefd4c96864377e2bf517c49cdc0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHN62410359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fc0f761b0bf355cb5007395c3fbdd1abc110d86abb24d417f6419068296796. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZES62559439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b9a9c114807a1ab57e6a669faef74ef4315d41d7eec4f902692af0833c0226. 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/QZK6F2557137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac08ef53b4617c0ed57fdddc63518a486890760799cfd7490d7cffb437cab0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDNB2474411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac08ef53b4617c0ed57fdddc63518a486890760799cfd7490d7cffb437cab0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDNB2474411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637e8a44d690842d76fd611fa2ae0eb5291c1cad710f801a6c5e3ffae2d9d750. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-21T23:21:19Z), 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/QZWFE2354009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ca10cac82eaa733cfb33813fb5ab6fdc0f1dd69ac1875a75e0e2708ec3803d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFQ2489431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e112bc0f2719a320bc9643fc1809e15f0badfabcf7bd092393af267cfd517e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTLA2459035.