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 0xb00e8df2ec43684af9348e4a2d4bb3745bd92f0d089cbdb0396659ea40986ba2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1844cb92-61c8-4385-812a-72ed5d5864a2.json and https://artists.proofprofile.net/proofs/artist/1844cb92-61c8-4385-812a-72ed5d5864a2.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 0x46b6aa7fa34cbcbe51de9599b1f34341c1c8138773f89e5225cc8d08ee030907. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:40:27Z), 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/KRMIM1910166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cb88f49fedbb2a8f8c1266e17501cf9cabec0773b091615b173d3629ac0cda. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/KRB472401225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dd04ec2db4d6bffd129000258369c11c4f8cc35b346407e404697e450844a3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KSA002401950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb13191e58bb58a7e02e72fb55f3fe3456a220983e164e0f74a24bc72a30f45b. 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/KRMIM2161160.
Before Falling Asleep (feat. NASON & H:SEAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e470a0da5e6e872ff0a1322766408f35d02c877571f0b9c8e6e1e915f494c68. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USCGH1937866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b8e697301c12a541f1fb7fb4d7d4174155f38c418038bd5005cca9643e153b. 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/KRA252101970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb7d4ca04a963cf9a094cf7b5a73aae4987bc8bc1c116a51d755c5d3275983b. 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/KRA252101971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7049d4283b0278016fb97ad847a6364583b4b95841bf9d0fe8792abad90fd174. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/KRA252101972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1548f3be1ac508674beef28d72e8e665779a348bc0c82d0ef02f42c2547311. 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/KRA252101973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c99146279f63b074a3422b01e4350013ad3a51910dd751cf378c61224f0bbc6. 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/KRMIM2203976.
All My Songs Are Concept (feat. kumira & NASON)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2757e54ba93cb123a95ff1694505a6836e2e92bbc040bca67b6da0734f0c5401. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USHM21934462.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67b3a02af2df22b405f83fc454cdfa1f4a47f16974ad47ea7d0fbe05a4cc413. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/USCGH1937870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1b92b04c72b6aac935ae986478433fa46a0492eead9413ae51675664593f84. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KRA252101974.
Hi, my dear (Art. Dizzy Blue) (Feat. NASON)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d502272b1ee2b04c8240e5832cff8b2c00488e50b3fcf5cf354a27538798aac. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ZZA0P2403140.