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 0xe8c4defdc445f6daa0abdb662695969b1f2642db16a8ba8845639e8bd53dccb6. 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/8833db0d-afd2-470f-be03-88332f146d31.json and https://artists.proofprofile.net/proofs/artist/8833db0d-afd2-470f-be03-88332f146d31.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 0xbe1438d3dea907edcd64568d1d4612a068dfd657e299d3318ba607a048842253. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES52327376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fb1947c24e218e2a3157505edb9831b8e52cc4f7fe8436fff6886593d28f31. 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/QZHN52398987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa60ba1347e4c32e79ee28f2774068044cd91a2958af2d48b7f9fed02ce74c49. 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/QZHN82329164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65403debfdbb397f13c614fd044474ba21b6ad2037b7cb3df225155984a21f3b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:44Z), 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/QZHN92364450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdf452c34f59b74a82f182f017e1e909e55c97106c3656b0f471a073ceb19ff. 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/QZHNA2348058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36eee4cc1a448ba1a0e05cb6008c4e92b7d6cf1f3bffaf49812ebe1232b465d. 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/QZK6G2373310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd3a168025b3ce1bbdce22573639ee7aeb569a017018dd17ba572d47e47a63a. 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/QZK6H2335029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dbfd189ec9292e956745704d315f56025d1f2206a8c26ea956a3b62052ad1d. 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/QZK6G2364274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b02a48510d36edfe91c168e6e88d7eb53ce174c0f04b0d7616e31a173e52da1. 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/QZK6G2365551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814c3301ee73a2977e723823aba78924d6b11374c7da49fadc1500e27226b5e5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6G2373576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48c59bf1a482b772a117cd9717958205c984683422e1e6537243d761e121b69. 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/QZMEQ2391865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5336c7e21f5ec80c4e93c0da6a0031dc00fb4fc9a3a8564cba314651973e98. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWV2380501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef3d678e6cab07a71442b47cae4ab5a31bea04ed841d6184f6c0265e8692b7e. 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/QZTAS2382923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806d249ea2851a3f3ef99c359f1a7779d335bab50ad8e52bc3cb5d5c1d9f8eef. 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/QZFYY2428077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2a98cdf9d442be831d544c3adfb96310615cce7afc67644f38f014a152e039. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFYZ2435422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5945623c5f8f1a58b18756a03f12cd20ab58f42ab252fe6e97adcba2b573c144. 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/QZFZ32437295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fa192d90f8054c9e7d99af3a95b576db1b9bb96519bd7d4acc7e770f5b0439. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN72493006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ff0985be9107b46d59168760faa5dd0b3e631fc4fb483638c09d5e12ca8d02. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZHN72493009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670c1e37805f4cbe909261689946b5022dc19f2b252b6e66be5f07fbef1ab351. 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/QZHN72493010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe498a1257d4214791204260839c563b318d817f4737f4a88c993a6af81902495. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN72493011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44a6c3ebd518eab2e10f68c9367d94b0623f6d532777d5ac9a468fad1109f68. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN72493013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289581000b150fc3bec1ff3d8eb4573b3cad661384fa1e6781146670f9549799. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN72493014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33828ecfee9dfda83e28dfb97673c3ca8cafb83bf65c5f7898cab330efb0296a. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZHN72493017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0f9e3fdeaaad5b820de993930952455c093de7f5faafd92a75879cc4cc4d3e. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:05:54Z), 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/QZHN72493018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871293175d9eede2e2f9ed1f10761f0a9fb0ee0dc8577eba0a5c55021d0890b1. 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/QZHN72493019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe014c7800b0e57df7f021d088d31d37f7a29ee5000d894cd4d7d454027a771. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:45:35Z), 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/QZHN72493020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c175358f88cebd36919f5116df377585134caa5ce4b41a2d12cc456e29066b9. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZHN72493022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240ea5231af17302b076e806a6457db5ea12ae65f6e584b95bbfc65e52ad5f02. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:35:06Z), 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/QZHN72493023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8489b1fb8189381b11c583597a7b97501f11dbca504aa7a0a30690cfbb81d12. 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/QZHN72493024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7a03f602121e07760aaccd16d76b840f2159bc057e99f392d8ff9ce9b1c377. 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/QZHN72493025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2a891dfc946403c4aa74684e8e7db7b5f2d035ee0d6735926f96ef981d6da4. 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/QZHN72493026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c890708af2e50e590a2364f7271c31c7fcb8e9570e993c0c64cf4b649d5632e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHN72493027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6826652db1b33fbf884d359ee3586226fd4c198293a72948542b84a6527e336. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:14Z), 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/QZHN72493028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9171289c92e615827772df1baafcd911161e4dc8203c6642fc26f7f44159dad1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMER2460805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e2bf428b75c273cc4c10c8812d7845038bcfe0790a8e19b875ec44c77bcef6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB82412175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f57030e705942fbf99fdfafc72a7be0b79b1fe49afb185c0aa6119b661cfca. 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/QZWFF2453609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee15d68564d2b70df666345510bd50b3a76a93b2c86eb802b4afebff2695c4a3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:47Z), 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/QZNWU2583937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521c12fd17d702071edbd7a08ee1318b94b876b16f11890e86a08f3d85e65488. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA82599858.