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 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 0x6bf81f155379771c9cabb695e972f4ca5808d7486b7d93454828388fea13f068. 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/5fa0a711-2529-4957-b674-df3d4262d2ed.json and https://artists.proofprofile.net/proofs/artist/5fa0a711-2529-4957-b674-df3d4262d2ed.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 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 0xc5ded0bca85007bcfcb8b8b9133288847cc2c48d5fe9888a2a548031e8bf95e7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADA1726537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc305dc75c7b7d559d3ca75887d2e80a3b87e5e8290fd642631d0fbe8c74ce1f2. 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/TCADA1726539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd965eabc96b5f21ab502d2d7ddcc50dfd7b60eea86fade7ad372c82e59b4f2ea. 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/TCADA1726542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8486c43364cc0b45a3cce225a8aef8f39411c4e1db5e2489c351843eebb65787. 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/TCADA1726543.
For the Hustlers & G's (feat. Lester Roy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714ed62df451c0559b41c7f121cc8386d0b37d6b0b507eec3d97425757a47465. 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/TCADA1726544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579c8c36c42535caccf56f0e367d10e7fe30684283455331d45969d89d62e351. 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/TCADA1726545.
Houston Meets New Orleans (feat. Big Pic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd854d243df22e50d4fec8859fb1fe29dbb8215ece4576c6989aac325557ff7a0. 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/TCADA1726549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cedd87e72a9a2b43136933525ef0d90db0991e67a3db2c75b685ef105e6a47. 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/TCADA1726552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffc5d4734b70c11c04e9592d7601e252330d065fce6bb0314593c2d8a092f70. 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/TCADA1726553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8731732748d4a759b98b8bbe6b52c9760fd0d5d2a6d02db2e205fd98b8a5a7. 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/TCADA1726554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c974b6e7ea68dbda5fa589c58b3e36bc5b514942e99059f4a4b43d96f43150. 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/TCADA1727269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e127bdaf6f28874b87a641329f9f58134243c8e4225114f7fe29aa8c74bebf. 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/TCADA1727272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c057aa5f39c6ce6c936b3dca07b8f4bc9c9b39e869d879811217c0c77c17c94. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADA1727274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e8bcda076eb0d2224ebdabd1cae5d3e55c66c0c2166523b43e42a976c6585d. 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/TCADA1727286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef516202ec6aca644e00561f7585e117b2f17541b307eadff1200fcb12e693a9. 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/TCADA1727290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40709f1b214144e5521d4bc8a86d2981d60ca5f3fecc045f991fd6f7cd2da1e6. 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/TCADA1727625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e4126ceef2e6d3673a16527a38e39d19cff340ec5aa25fbb453171d0e4aab2. 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/TCADA1727629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e8de2b7ea4b3f9e1c39caf1fab08e0cd846150f04aeb2b150e0ab9e18d4df2. 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/TCADA1727664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b61a19e86b721bf075a5f49347ffc0fcd9d556eda33f437f0ae3a5d1fa55a0. 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/TCADA1727686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e87afe083bb756f830671943cf99658351b7a2cbb77e57415ce579dc1ce3f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADA1727702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1782bb5be6e0a13baff786cbaf50ac573ec20d521306c6010d2bea4b7616030d. 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/TCADA1728750.
Street Fame, Vol. 3 (Chopped Not Slopped Version)
H-Town Chronic 4.5 (Edited) (Deluxe edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416ce3ee71f210e06f9db9cb05a50d77a8aad6b73bdc39f70334923544bf7cfe. 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/USQY51071790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f1498d343fb44294da4752c662f2373badfecc9a2bb51c68473cbedeff75c0. 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/TCAHU2408931.