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 0x275cff19fc4626bce5ffd60357c693120b5252ecc075457579b4130e01de0459. 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/b26dacaa-4f9d-4f9a-8b32-5cd500b97298.json and https://artists.proofprofile.net/proofs/artist/b26dacaa-4f9d-4f9a-8b32-5cd500b97298.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 0xb00165f5d10458fff5a4b6d59991fee41b3927bcf135e6b6638e0eba34035f32. 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/TWAE31900467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe935b99059d26d2d51941064284131669f10b5746b7851a5c8b6983bb49852b. 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/TWAE32001891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00165f5d10458fff5a4b6d59991fee41b3927bcf135e6b6638e0eba34035f32. 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/TWAE31900467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0b56d394a6b7f65361b57e788956a7e5bf0b68a14ec82d50da382b09910b26. 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/TWAE32401677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d50f2d1525b66e0e82deff8fbf4540c1de3e9250ed036f7c2676c976bc9da4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWAE32304086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf814a8d364220cab89893fcedb4c5b86739b778ba04c5745777db1bb5e23e82c. 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/TWAE32400878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5155d48b51e52ea651009390646ff79863e6c02def61adcd72bada6bb7464. 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/TWAE32302136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965f0906e393d9e8be4722098d516fbf8218235c9f7ef0e1769a0c4f28cce8ee. 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/TWAE32205045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e607e79fc935434eb8330aaf513cef9fc7d938089fd580d65eb42650a1bf91. 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/TWAE32301602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a27c0cd9d54e01e15b378d9b8c6d0842b61cf484039284b88924038e18705d. 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/TWAE32401678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc5f3d9be47ba2e6ac0d93ceedf26f2a8fa27e5941756c85d69946eb42692c3. 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/TWAE32401679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6ce60ec1e506e6672419e6b9ee661d334929094221dcc8cbb26906b330aeb2. 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/TWAE31600235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f2e3e93808acdfc4d057ec001d81dc173ac1b45ade2c7d0b74ff7517178d9d. 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/TWAE31600236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8d899aff5516871dcf7d95b2636b973a61e57d3fbc146dd6b52b17836210d3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWAE31600237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc050180f690e3ec80a73f762b6ffda77e5b9631ebf6abb915cde4b8f9bf306e. 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/TWAE31600243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dad73304b6bb7e2435cef9dec4f857eb04e12fa013f1d00fcb6abd1555074b5. 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/TWM671220302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a6e3e7b78542f5078f2e7029440227a150f8e78fa1fe8f05178c33fe91bfdf. 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/TWM671220304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3303127481613c57af4d11d974556cb9bdff6abdb6fc42b410343b907f1362. 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/TWM671220305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f76914dd95a633f5a37e60e0821d35985f35b8ee4ddf38e036ae92fed106c1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWM671220306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf814a8d364220cab89893fcedb4c5b86739b778ba04c5745777db1bb5e23e82c. 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/TWAE32400878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d50f2d1525b66e0e82deff8fbf4540c1de3e9250ed036f7c2676c976bc9da4. 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/TWAE32304086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5155d48b51e52ea651009390646ff79863e6c02def61adcd72bada6bb7464. 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/TWAE32302136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e607e79fc935434eb8330aaf513cef9fc7d938089fd580d65eb42650a1bf91. 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/TWAE32301602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965f0906e393d9e8be4722098d516fbf8218235c9f7ef0e1769a0c4f28cce8ee. 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/TWAE32205045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ee57570f470582921ce8a7f268d88d078573f84610acddde17351a2e2f6ffd. 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/TWAE31801097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd2d91855190f579b339b18340301a707b2e8e2cac7f59af1a3c58a015af223. 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/TWAE31801099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0a4fbdb277925defefa03811639e16c1ab0f3bbaf50a1abf14c394cddb66bc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TWAE31701217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1701bd1e1e9c7dd1a7dd492d3871764974de33c8cb5db79d5bf457bdb5a892b6. 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/TWM671191801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb03530f8298b26fca6b884e70c64e71c9e797d0bea8a59ff1b3f70f7fa8d340. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWM671191803.