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 0x8a3a917be16868931655873e64e1eea7cb4ad4095273bc37616cbcd5b1765f47. 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/4402837d-85bc-4380-9c3d-d344a240bd51.json and https://artists.proofprofile.net/proofs/artist/4402837d-85bc-4380-9c3d-d344a240bd51.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 0x34ea82c5ac4b38b2820e8024a050f63a7ab2decbdf6aaedd0bf7886e43407efe. 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/QZTBF2433193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db4f3ee597038da2366f472058c725b81cca17dbd0f8ec21cef98b5005ecdc3. 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/QZWFE2483550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062d1f4c0104968ea2a24924e71a7d6d681ef50b920d021db40d94875de7ff31. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:00:03Z), 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/QZTBF2482677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d01579c79faaeeedcdf63de78b30fac8f65213b0d3702f80822a2ca75aa4bb. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ESA012440521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe502e92f48fcf06342692ed1ab4ae8d176c21dcb33bc9119d14938b8094b8514. 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/QZWFG2427290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73e861777c2bc6a0d019c80b41a0681f02106e3da5cf7decf695d48a87b58a0. 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/QZWFF2454771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2e9534a9615890516a3e29ff13818f582272084e34d6d4e95a78b94a514350. 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/QZWFG2424748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8836310d0d7e2ab3db70e149bfa29e47e920eb57061c4b2745a9ad322a17848d. Chain 2 (Bitcoin): anchored in block 956777 (2026-07-20T11:53:41Z), 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/QZWFG2427288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c2afe8e57a863fe064fa9a3c0ba74a0c170679f84080475ab7511c1b2c70a1. 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/QZWFU2464894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a39c8a0bea39f0464a7490750d6a1cb56b87215d69a1f54a0e8f384c85b0cea. 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/QZWFK2478440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e23d9c9690b204802fb5975ccbe16f9a8ecbb01cf0d5c2f0bf947929b8ee39. 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/QZWFP2454763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a9a7ea876dec2b1314dfb58e79dd52c013596248185a6567bb82a2f819c19d. 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/QZWFQ2494533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ebbd7812065ba82f5b6b83793fe36a829fce1f616dc99cfe762486039995a6. 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/QT2VB2479132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98af52d134e46294a45d5a2be4df2cbdc072b6ab216445fc97187b87b135a570. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:50Z), 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/QZWFS2420026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c5691cfd023ce0dec956ab99bca2f7c6b1b98526c2442d2e191bdac7daed14. 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/QZWFT2493328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec9bbd51e566b43c4b41c0ead6259a80d5080621827b22bb65bfc94d200fb69. 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/QZWFU2462461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c39875424f234de51c7db4ad9d5c0078dc5f90880bd57128edf4c5673dcd734. 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/QZWFV2406939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb292a10764f6ded4716e71dd61ed270a5b3e20fd3a2d22b08347a9ebc1d8ea. 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/QZWFV2477261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b57e8872ac0ef9b08bb9ba7b5c2be8169b76284fd98ac6a8b51c1d18faf9211. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZVEM1803571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bdef135c9ad18e6394270df1fba28cf9795b3d48b9a6006e743d0971f8f3a1. 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/QZWFW2476457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b535d483f1a8dd76b7b2db77a6340cf95ad02ca1d84657e48723257cdc729c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:51:39Z), 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/QZWFV2431331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3e2c53bd92b9aeb5a5b7d75a51a106feaa36342b8fb5f233ff934fbe7bffda. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:23:15Z), 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/QZWFV2431351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f5046593a1e8d1f781ae773cd5a4eb8c32a2b9399c415828e06261b32d2338. 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/QZVEM1803400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f9bc489750ec01eb5f2dc25e8e369958099336b432a9f46218636bc8118db3. 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/QZVEM1814298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccf4ff96b60f7b6151412dc11a1205dfb138e370f29b00cca517150c319c133. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:43:35Z), 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/QZZ7K2493106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65714437d54a70d03024a908085f3ba3606781ae8999cb5e81f311231524b746. 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/QZZ7L2466210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c8b10e13fe3a4ce1b3728566fb72b8d90b1a6fa154d74678eada108cc2365b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:07:04Z), 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/QZVEM1848052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1019aa95c9c0c2310a7f64d6b474ab7fd3baef3bbd91ead1a09fb02357f6a3f8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:11:19Z), 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/QZZ7L2466207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9d2f16f4e719d350667bdaf632e87187c9a8b36dc603c3167232d80db1cfe9. 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/QZZ7L2486754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c2faa58e82523d88bd80109fc877dc09e62f9df4236098d5f5249ee945fd18. 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/QZZ7M2485070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693f53c7a6dd8762a3813393b2461856606f50bc0cf7414f7431ef1a248d6eaf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZVEM1860161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1302caa15bea3127a7001bcfbad09a5a994d446e66ff6a1fa7107e8ccce741. 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/QZZ7N2498997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbc6df224b6a7426f47ce2f3058c18e32442ae4457429637df6aaee24f61f27. 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/QZVEM1861224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad822111960e075e125eeb0f4b9aa1389ab4829256a0af7afae6d131a1e87111. 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/QZVEM1861226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd5f73fb0121f86aa3926365461b0bbe0fa198e3b5f841cf1154a5e3f8ee47c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZVEM1861228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc62b53213b2ffb39d62703d4fa620e96bddc103047eb8bb6afdb1cfcad5c543. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:05:39Z), 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/QZVEM1861234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caeff8579647a9a6e2fa38b78ef78d4d1c7522ed3209620cf3e638e120c1d4f. 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/QZVEM1870625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e182f6b055c4e0b65cbccd3525f536386b7edfaee2a0f489d89c4161e49905c. 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/QZZ7R2480234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981d850685ded405ef0bb064c4527ee2895ebbad74a064ef2ec96fbbb5b45c41. 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/QM4TX2574356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa29a641f8595f543ffb17434a319f34f558b3b21543f9db4ae8dadde0aa0bd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:54:47Z), 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/QZVEM2570949.