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 0x6dab7d46d46489733a056879b69979d2b48b24f8de28343d005d74e4dd0603f8. 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/c60af165-c592-4a89-8b6c-93afd7659684.json and https://artists.proofprofile.net/proofs/artist/c60af165-c592-4a89-8b6c-93afd7659684.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 0xe7f52e11553a9cf5a2d893e9a22915810e6e55a0b066121fb5ff6568c8add580. 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/USDY41704560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528404c6af3fb63cf006afe56c5d230d14ed00c1f230f8819fe1536c69af4bd1. 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/TCAED1995163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05b00d7136b860d6dc7f97fd46393fc24d53832f253c5755789d45817d47758. 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/TCAEG1962418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2393ea836647b3babfc80658a8adfab6f484bca86441b637d7c91c9a2f54429. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAEG1962421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f20e0880bd81eadb5a3367e7b49694a7573a3e76cb1ff51d5968ac44bd29728. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCAEG1923059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92471b6063b0ae8a8e4d919d6dbc7cc97f86b419fcf2459e3f847f19a5e0b6e5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:25:52Z), 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/TCAEB1926379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8eb94e311be14995be3a15f809d56b6c78c86a453f25e789f6aee47d01c7a8. 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/TCAEG1962458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83138928f01dda18d19c61e348a2e657916ce7b0e13157f01794ea8f262165f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USHM21838263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adf8f26d3dad88aaa122a6ae20d8e3dd4b79dd1729a563a79a7cd4358a844d2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAFA2028340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7c0443d894474173f2b7fa8cb2f4c9615bf4a2b834711c64cbc1e3ab94f934. 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/TCAHL2373612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ef23511b5296684688e73c3d734959c708440d6b7aef37c340380a6d162faa. 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/TCAHP2332147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9e48b3c8904b3106a9cf7cd4abdff8ed40110312bb8f8278fbcdbca120302f. 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/TCAHD2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ef23511b5296684688e73c3d734959c708440d6b7aef37c340380a6d162faa. 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/TCAHP2332147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416600acd3178dc4706f3f6c427dfe88e8faefe73e998ad08661d23d3a6af5e7. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZK6Q2476088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac1b9f4cbe8ee841a3297918fcaccc92680d34c899b5b58ecebe118c055ed58. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:30:19Z), 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/QZWFP2329829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb031a03f94088f5a888e7220f2be499f9638e20107af28468d75ece9e007d2f. 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/TCAFG2080324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a27432c377c17a693c3cffbb2b94fbc40a658033862c0452034fc7ab9d7387. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:18:53Z), 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/QZTAY2401972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9e7343293b5201f590c01238623db1817ff1bb668b998038ec6a477b1e88d5. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:23:25Z), 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/QZTAY2401974.