1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5bbce4d3f5911a43f8f08880c84a9fbfc3b164df11541701612b4a6c76bcf579. 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/47d655fd-9b70-47c5-bdde-448dd6921236.json and https://artists.proofprofile.net/proofs/artist/47d655fd-9b70-47c5-bdde-448dd6921236.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 → block OTSBitcoinBlock must exist at that height 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 0xea2ba71315e68578f11022c5b1a885138d216744ac2143c9671227bd202d8fd2. 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/USHM80638731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcc5bdc577826843b190820cb9abb4fb11897e29393221a40396dfe2da1a6fd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:36:40Z), 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/USHM80638732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4559a86bdfc784e1b0258357b99fdc1ccb543a9e2b7b93168fb929a77b7c526. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:11Z), 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/USHM80638734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb1ef7d14e1d40a65a0310b2698f0858ca2a88c419e658aaeaa875c0b5bf7be. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USHM80638737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817736385d3b6303da6016617e89ac1bf9e206a9ce5be29c78a0218667dd6ff1. 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/USHM80638738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92ea9cc53ff3b34ee32f55ca27bfb9887f70588e40cf95132143034c7f08971. 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/USHM80638754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4cc73859d1bbe7552d3f4f94c7a324ebdff3c13686cef2cf6f36b578fa330f. 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/USHM80638762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a79a1fb13cba28422815678b115c7ff2dbafd100fd9b7a1ad5b601ddab2a39c. 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/USHM80638743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420c3b0d51c2bf9e7ab063b3d01e7c2cd54c9fd87733863597385f23c73d4adb. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USHM80638746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6caa02108dbb66dd75bd9138f5036b831bc319e4bda1ee5a0e9e93be001795. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USHM80638747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421b6ac5a5317d19630329ac72473f46018902b3287a59ea39566553f89b3d1e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USX9P0674548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9021d0d824159d84bab71716f6f9c025ff740572fcb747ca0e57c64dc8d626e1. 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/USX9P0674550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e9d273b73ac0ad18fd40bbbf58ec1c8eca40d8c61bfdf2d9eda88a0366a78e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:49:18Z), 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/USX9P0674552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867a524b8779ade794876a29ab674aae03c86a31bf442f9848fc139dd8a5b422. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USX9P0674554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62d4ad8f7e787ea4add2911ce7dda4fd2215355c1e497a650a670452a70aa71. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:18:40Z), 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/USX9P0674556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e43adaf1411620d14f0976427a5831fc15b15372f054e5bd696582e6c0db339. 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/USX9P0674746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f3b68deb3210fd33da1b77129e76f6357e6b60ae07108b971c755f371ef2a2. 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/USX9P0935331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccbac54ea7eb46c64c2f96b42e7f68b8defa8628307321c28ab6adef1b91d99. 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/USX9P0935334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf358b68472e06a4d596040a2b9b9bff33e780943f2ec291742f81e98a1e42c99. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM91282371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740fc7ed69de7e23112b1de083df31a4527cea799ad88ec64afce24a5d3b6883. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USHM91282374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4767882af287f781cd82086b7bceafd335a7808f98b7f9814bc5208281d5007a. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USHM91282376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c8bad1e48c9e34acb3070ebe20462dd0b64c669a45fc93f259a736cc3c3560. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USCGJ1508205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e81c49320f94d1e8b4ed046faea11222432baa4e672f61e4ec5978d6fe7e818. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USCGJ1508206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a19d3ae1227b079088c73574760807ad9ba4229557bdde71831b37bd988030. 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/USCGJ1508207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06616db7540a0ca4b5a15943f7e40968b8f70f541db34c6be356bd3175595131. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USCGJ1508209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a84cef5d0fa32d2a8640f33773a0fe11764f83e36bd50aaf4fca68645cea1f. 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/USCGJ1508210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8ee2553a5613fc9c8837304d550f48229b2668befa32ce4ca164e330a8c1f5. 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/USCGJ1508214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83d9641a4d301da53b3fac296c7a7e0cb2cfefaee78c0f76819984dc9450a9b. 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/USHM92169413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbba96ba8d8434d6068b618fabe04c31e5bbfe3e2cfecb1668a922dacc7f52b. 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/USDY42492159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dd1b0837bc253221c5be4fc2e78df51f7edfa490528a83b48201eedcfb4dcb. 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/USDY42492160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa163b08d218248064fd4fc5332873aaa3100d5842e05a70a713bba26e05eae. 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/USDY42492161.