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 0x9e8d8ae480cb9fca237a3a7ffa064bf69e53ca0cca686b7055f2d4946f7a9e3c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e8184e8-b887-4823-81e3-847ea34a0f18.json and https://artists.proofprofile.net/proofs/artist/5e8184e8-b887-4823-81e3-847ea34a0f18.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 0x28e7d2a055d1a638b8c742c7567f4760e4783de7a0fb501b21de93ba2fed86ca. 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/SGB502369869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a99d585e98fd01fe284773dc7d2daf3464577f05ad0bf6f084c5cc33d237e2. 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/SGB502499756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf046a8fbbcd1d5f3f7e91998fa483befc89bd82695bf1f19d2ff407c4f7d70f4. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZNJV2461687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5dbd15b29e7072095020c1190a892497b4063f54ac2edca394afb9a4325340. 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/QZNJV2488055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb7c4e0a20d494e1cc82abee5030c93372f8fab2d572f87dc9033d340e7221c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:24Z), 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/QZNJX2402878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55d8727d0b4e1315ae6b8ee308f57af5596789679dad600468f2f4d6ac5376e. 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/GXD7V2481347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e62e224fe506001ad2e638361c74a1b3763279d1a3444427d88c76bfc1d5263. 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/AEA3A2261105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9737e08da4d63fad68c7488215ac11596ab10b42d8dfb1e3d4cc055caf474665. 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/AEA3A2206280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cc2d8333c22e6b0938867f8687abe6c474d24369223dc5a608b8af0d2e0edd. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/AEA3A2211396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa586f128226e4fbcfc3622a12c69c1576957f9edc195adcff6640594794f3615. 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/GXD7V2551297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3209444a06cfcc2ce46b7f0fc8860c148e0e2a0acd42d511da33d934e07c229. 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/GXD7G2594241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef0263605d657d95ec1f683c865fe51a7df44389d790694a38a9364c97bcab5. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GXD7G2584713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaecb49ba08cbe8c94c63234aa09c6e4c850411fbc60d89c88175c99eebfa174. 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/SGW502559060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277fcddbfb689a68cbfd16107209e02c3a699693985927c46e17db786fd60a9d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AEA3A2129068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4664d7eb8e1efef0e2479391a9d022fe13ef81d9777ce6d938280a1071a094f6. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GXBAV2062216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1199f4b84fcc02cf3fb7e8970a435a4901f99031a3563129c43925d5c8d218. 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/QZZ7R2578001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9aaa9a3ff75d1d1cdefb33f38bd55704dc76aa8caf0bf0c901b94919fd73b25. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QZZ7U2583973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7ba9e9620440c14529acdec67d81704b8a488c39e590442e327150a18c086c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:27:20Z), 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/QZZ7U2583974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc0e3cb0a0755169ab99002e37bccb9d037215a68b17b61e8cc8ff39e98a70f. 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/QT3EX2563552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2e248a1dc47e423ddbe6cfa7438909fb7e7bdce20f734fbbf53626bb172e2b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3FB2588629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe856d094d8c6bd9b8a9a3ca22300968c8be9064da11450ea3506c9a3c641b9f0. 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/QT3FF2572620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fb252d16f18159bffebfdc9f8dab0fd0908620bcb6ac48429e9d7f6e955c27. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:28:03Z), 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/QT3FF2572622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f4d61fe4c541a7eeee32f4e50699a1ba288746251aabd4006f1e9028562ff7. 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/QT3FF2572623.