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 0x912531ae2cbc829529a332c28078eb784ee39425ee9adbeb40e36693b79f74a6. 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/89ddafa1-fe2f-46fb-9313-c5629092beca.json and https://artists.proofprofile.net/proofs/artist/89ddafa1-fe2f-46fb-9313-c5629092beca.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 0x83ba7fd084f82711006a2874671d3149788e1b7304a179ae02d846fafd86e786. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GXD7G2412161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827e5162d26b5b7c70aa7460dd1e4ec3f472a4083e17ddb22f93a0dd8a3ee45c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFM2124610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab73f73c6641c639693530f601c738007cf55ac6c84a942b4cab627b233f94a2. 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/TCAFJ2165820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd5353cc862ad0dd063ecfe0f61e5f7f49a5ac8ac69c854246ea8f2681deb15. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFO2103901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a69634afb78e20e4bb05e58a3501d46d75f196398890a89ca5b694509371a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFO2103910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a063449700558c7b4bf2c468bbdaa5928537403fb14654a414295b86bbd873. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAFO2103927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca1a639f05b1af1622e73f405d410fe8f5d027f12037baaabe2e8c0904cc836. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADT1830895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adf330821c1a483a61faa911b9e2905bb12f248c9291b8bb9516f29b375f5a2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA082451218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb948bbdd08d402716cca5edcc641fedcda45db71b60b14dfff6acb8db6ec2ba3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWZ2490771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccfe00d58d93aa6c65176032ef67559b3b39fbf019caca6fb098f7df832a38a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5752481862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46213f4e3704a64f8eb2ed7c41b38983df6948f08e89d977f1a01005e78250f0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPEW2410204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da26387bf602043adb4bf88b9429120f62f553222486bd3175787762e25b5b1. 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/QZVEM2381931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bc90ea025c1a5bab31b6d8ba4f194d3d5c22c12fcdc7016c6c2a90bb0f5d82. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBLFP2368940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5518554671b0de367645269ba360abe11f527ab8a2a825cbbaf30a5077945f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN72349981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cb86bc9e71a2ca3f65eabe6620f15353af459a4b8cfcbfc132b37fb0c615fc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWW2256516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb396d80772bafb08042e9048a37738a89d7729cefa5c990ba611d1f74d12d950. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6K2272210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7e66a4c626ab643c53413578ba8822d5313f6f5681e51595f36882432a6a82. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6P2292366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a22965c390c287b5a669e25bfeaef743dfec5f6012884434cc94f3936939300. 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/QZFYZ2255387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d61efc2d7e2bf49749b77703ec8f829c38e22a00ca782809ea951a5ff86a25. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFS2173932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827e5162d26b5b7c70aa7460dd1e4ec3f472a4083e17ddb22f93a0dd8a3ee45c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:54:51Z), 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/TCAFM2124610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab73f73c6641c639693530f601c738007cf55ac6c84a942b4cab627b233f94a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFJ2165820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eabf12d3dbc8ae47c3bd49eedfbe55f076a8d161a6eb0aaadb02798d38f62fb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWU2057424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0da356120e98fe16c0368ca00416d6fcd3ba22662e290bf5ebedaac156e833. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWU2057427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62e99931efc1a9be0f8e8b227799b3e9e2580b1faee17b771eed02af9325202. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAER2050160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c77ab44c6f8ce7a639451a004bfd2570d247e777aae05ca89404caea974e24c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAEB1989842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc13cd11e015b08660fa0c0a09f499edea1474066f39123e8c9541612428fa1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCADI1702094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5b899c6b0be200cb997148e961f1049e9578e890dfb1b68667528d7c99285e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEM1982076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6c8465dc8d217495d124015e3297f1db3e52acbe18a69bd67130145dac851f. 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/TCAEM1982135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc9bfb57548c152fa7f4b4bde5d6edf49f8c9a17909bd9b3b9f3f1040f494e8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEM1982174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7e40f64e60fd0cce11392c94a2a25ff1bda510eefc35783930cae74c5ba668. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM82073704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d01a522da5a5361c4a29e8e72f45fbdb73446b38dfb307f584a5ccb4052e38d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM82073705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1acbe4db0ce85e869e6d151f32d4a9e348272f1e4a89cdeefce7b9c85082b4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM82073707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a178ffe6c3cd1621d2652f884152cc4649628682feee7eb9156a46d86982a63. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM82073710.