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 0x832f749731694e7e93e66dab5c539bb7cbc28ba637ea48645e9f27514b95a523. 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/cdde1926-6c36-4dec-8121-487ab573adb2.json and https://artists.proofprofile.net/proofs/artist/cdde1926-6c36-4dec-8121-487ab573adb2.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 0x028b123966bdb6395b8dd952965856999a8b605441d0a27b8de1d109c6d1f262. 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/ITDXG2104201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa5bdce42d24d0ec262c1ee8354d375c567cb36ab72a4fc0fe8e8bcc71f0e70. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:08:56Z), 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/ITDXG2104301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff6a4f987bf76568ac1ab687f83dcaaa092a8710e0b03cec13de7fbe6625413. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ITDXG2104401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f94463ea4499ff4f4fa699f1538d6b852b569ecef3dc998277fc16e02868b8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ITDXG2104501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcde5496941c57465f11d6601c8cd96c556deb780b05c6f2afc002bca9482e06. 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/ITDXG2104601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d78718ace0fd882668d1ece4866b07ad50bcc43494ae7ee96a1d456b91cc74. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:26Z), 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/ITDXG2104701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe78457f2ecc103de242d67035308a833cc57df7e217c7c06062bb1265fcacd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ITDXG2104801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db0256ae60bc5d13f9563608a6cd3958a2fdcbf35e8c2d6c984ed1217d6eef2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITDXG2104901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c1d9f3666b12dc5d352ed2b82b7991847708d5415bf0368625b3e87253366f. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/ITDXG2105001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75e2f0d16c7c176a73500989305d3c8abd9982d369a0d5a9d39d29bcb9a63e7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ITDXG2207501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7744b32189d973a7a2bf83b0a76921a8434905246b09a093dbf4068e23a210. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:56:23Z), 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/ITDXG2207601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d08f72b21807aed9fe4f24f5292150e2858ce76935bcbb77ab37040ad1eab2d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:42:43Z), 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/ITDXG2207801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49307571e284d6a23f94a95036f7fc1ac9ef65b4e36fce338b06e6e9345ddcc. 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/ITDXG2208001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f70d4b0471b062abec6d19785196dbcd34f8ece20e62225367e1b38cfc85a50. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:54Z), 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/ITDXG2208101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddab5eeaaf9dca40d0f0165a43b5a84ce45593e8c33dbfe69ec1bf6cc35f4b0d. 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/ITDXG2208201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf3efe2579d9656ebc18592f7b4252a386a170746ec569a89b38010caaa5db6. 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/ITDXG2208501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afaa0b3b17473f9e5599a209c108277f065b9ca2262d08f419af3a3909989dc. 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/ITDXG2208601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90a10cc32ed3285722f7fd2e82d4b149bb38907b0373e0036c69af67c533b5d. 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/ITDXG2208801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6404ca72ef1d8cb542ac747ed6179ca72ac58e9f68133cfe3e948e3983da537d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:23:08Z), 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/ITDXG2208901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5702aff58ebbbd9f8da5072a9c1d66ef4f727cd3ea2b604f090cc6e62f9c23. 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/ITDXG2209001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3602b0711f5a2591294b85a081097982e4f253955d95d6970e61b6bbb4569e2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ITDXG2209201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16666cf39d8005bdca35e17a3d653c886a4fe2fb25ef6379f894fa630e23c33. 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/ITDXG2209301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c095c675645c583d0fc90d6d55623441c1da8e98e86ed599dea43b76c6636d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/ITDXG2223401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6becd38b0e1ecb9a6999f60a9943d25d1f6e794d17ea55ab0aefc8ef966e3c0b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ITDXG2004201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd433a8527fb24825780fc96eb61575680439e4c6fea574ea55f59d55031b878. 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/ITDXG2004601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f6e209a2b1c7c43312874958492561a478805cb653bcfaa26bb8815f48fa18. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ITDXG2004801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11d4262902992fdff50028ec044b46d745584c9fc90cc5e6a9a3bbb4d374ad0. 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/ITDXG2004901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68975a6747c1944cc84341fae2c38dc867f72d5bd02a16673c21712ff5a32030. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ITDXG2005301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e72f1dff37e37484e4e5a564ef986c73f145cc7ccfe353dbc089dc96ea0f71. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:09:33Z), 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/ITDXG2005501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e9c800b4c8e9eb517b1b236b532fc684575744230b7161665b86832c01a99b. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ITDXG2005601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcf76a00c72f91b609d9bec94108c65bed3fd6c94c8025b8b4ca60097e5efb4. 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/ITDXG2005801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016c44bf3be112e39046920485bdd90ed1f7dc4c1c6ff0edeed8a9cc04bea898. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITDXG2006001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aa0700f053200cd0a5a32f164d4a621df03bc0b125d3c1686eb72da1a96d43. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:22:47Z), 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/ITDXG2006101.