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 0x6a151a070b897dce2d92845e9b7eff6efec2fdb083d875e58e95483b9bc4f874. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/534d202a-5610-4fcf-a612-3638baaffb8b.json and https://artists.proofprofile.net/proofs/artist/534d202a-5610-4fcf-a612-3638baaffb8b.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 0x43bdfe393474fa0c727a872a7d02e00ea0bc2f1c489664d64287c4313b441056. 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/GX3Q92097254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272d10bd62999081a6cd3f63de5d2ca362fa1c8b6d09bcb3f0cc00ae71bfaf63. 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/QM6N22225355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f18d96185430291491381aa1cce87189d251d9aa15732c899fba8f3caada3b. 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/GX3Q92093229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05d9c60bc15b0917c29326091d1cf08deaf4e0f686732821258288b972116d0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMBZ92296453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c06df58ee74ccc2fc3e4b52d1ba92ad2b0bdda5faf3b800d9bb48b21f729cf7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMDA62206224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ab563f2390770e8aac18530479e45d29dd6e0c415f45499933e4210decb5f0. 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/GBLFP2042673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc909d0faba383a8af6e221018d0a71210729c2f67f5f2c00b2d9c4323259f872. 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/QM6MZ2048746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9ef6eb88c3d35b29258f1c19ba02874b1c610dd9b80f6b34e9cae4be714998. 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/GBLFP2042671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf7c71ab2f22139e9b70c97a1e9821bd4108f065200d581f061aa20153975ce. 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/GBLFP2042669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe24f4887564da968b5cc3311e14d36eaf3aea8ff43367d8ba968f68a665fd70. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLFP2042666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3e6929d46badc796d259fb1f95d995b95c9d266430d7e08d26268b14abd9d5. 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/GBLFP2042665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2941f63d9c2374b0058e1c5d7dd38fc95d5323c77cae62f9e6e1e820a436512. 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/GBLFP2047938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848e70d6f69986f569fb98eda811a8f2424e096b5065bb2eba066296307358a9. 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/GBLFP2042662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc137ee186d54b551b4c5c0f4e5c4e52b3034e8599abe1a6d877a3e0bdcf0e76d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM6MZ2048760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa21344bc6baf097c2106ab8074d7dcc5ffe9eb81d249baeee11bbe814ce944. 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/USCGH1949769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6b1e2e88423c0fa05ff4bb16ff03dd52db5d9a19955090f1d90afbba907349. 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/USCGH1949770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e38fcc2f856420193969f5e716fdb6d4e60510f8fe69dfb5b5149085cf61d2. 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/USCGH1949773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65bd34768702fea79c285427089281bb0d0f9f84abe67db014c93f8f63465e3. 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/USCGH1949775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05d9c60bc15b0917c29326091d1cf08deaf4e0f686732821258288b972116d0. 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/QMBZ92296453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272d10bd62999081a6cd3f63de5d2ca362fa1c8b6d09bcb3f0cc00ae71bfaf63. 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/QM6N22225355.