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 0xaa803d529129593241a21822121618b43563ac65b9541c98863e0b38dcf0abbe. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f02cb3c7-37bf-40a5-8564-b36b7761f0ad.json and https://artists.proofprofile.net/proofs/artist/f02cb3c7-37bf-40a5-8564-b36b7761f0ad.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 0xe0830896840c34a04e2e74e6f4e016e51e0d8f711293d832d6e3702758ad53ad. 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/DEQ022011146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742ee54834a9ece8f78fc7e7084ac07d8054dea2c3990781d16a51f424850059. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/DEQ022011147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c7f979c008727c9d7a0b6c79729bebd0e3bb3a9f073990257bbfec6d786973. 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/DEZC62172957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923a13ba2260132556c1f69f028821707b122877d9f1f772187ce7a5d40df159. 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/DEZC62172961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3705f6dd599f48d0c82e91d63b2cde68285436117b2c8af18eee03dac92806a6. 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/DEZC62172962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3638010056fcd3ce74f9faef9cf688b25a54070816ccdadee98286ea4fa4039b. 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/DEZC62296518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc844d1df9cb63d2632fd02e66d5d6a197ad1df55f6a2c5b7f4b2dfc17adb25e3. 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/DEZC62464499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15427ed7cca11fed9c95a46c977fc8f185ea48521ac0df1c940cc325fe57ffe. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZC62575629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb039177d9102bee4dd3561f216b6c5c2c418ee14aac593a787d608724db1a9e3. 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/DEZC62575633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289cb8337e5bc3d8884b5a2a1bbf9ee2bc7ee2a5fe5128723bb4336a9d443de4. 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/DEZC62575634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918c7434484c3a5ec9ac9018ade61c5d9d7b0efef45ce49c49787e9d0acb5a76. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEZC62575635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f3f66c75566488a444b4d93d0fdb6a34eac36b838a0987d70dc116d1bdb96. 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/DEZC62253464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9be403a0e1b4da4e72c8a9ade70dd56f14edf76809d3b2494c4dfc5e0437c8. 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/DEZC62253466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5748b307c96892208c9c460f48a9d89985245bb29d4cd9a53ae98948dc7b9fdc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZC62253468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dad2493ef0bca5e35f852355f058be1adc129fe20396544fe813d08b761078. 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/DEZC62253470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f49d9195f6b497c3361bb6cbda3a62ebf9ef80fd2559e5f90ec4ee11543a9b. 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/DEZC62319203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c498364990108fb573280c8149746173e387067a4ae6886d8bf21d0328bacf7. 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/DEZC62319204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085df6bcb843c1fdc1259424ed6b7a9110d47aca1e2c6b95980696e46750233a. 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/DEZC62319206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaddb3487d96ed2ffed478de5e1cde4c7c13c345e98e53a0bddf916254bb5ef. 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/DEZC62319208.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc924767cf1ef0cbb4f40a9ef255bf1c00a09904ff66ebc844ef939d1b58c11bc. 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/DEZC62297218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216cef05838824be0af71442639f5dc260c9741ab78038ec6d78e5a5c84f8903. 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/DEZC62297219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000ce7d3cbc0f83db7f1843723993619cd8566acdb12e6e494eaf1b072d8de9a. 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/DEZC62297220.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58a45ce7c38dd8a4f898904fcec76902d6c384742f7dc72e203bd7301ed5907. 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/DEZC62297223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2220fc416c13ea14897e2927be8d9c4de38416c2d281f6ea04e960d207a24720. 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/DEZC62297224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadd97c105ce50e01a7704b3bf1e2d31cce70b4e2313dd6e87ebe2a06308560d. 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/DEZC62297227.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3abcbcb31c07897d64f3617e1f6658b28cfa8bb0b73fb79c583f62a8d60a10e. 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/DEQ021904919.
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