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 0xb11c643183f6954690c5cc6052addf515b16083cdd58cca47d12a7d84e680c5b. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f45d092d-f7b3-4aaf-8b4d-a47e2de2f7e4.json and https://artists.proofprofile.net/proofs/artist/f45d092d-f7b3-4aaf-8b4d-a47e2de2f7e4.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 0x6cce5b1ef74245a14071f76b4d8ef517604bb7cbaeb5a2e5e7a41be04a0f2b6c. 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/USUYG1266481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ec07c0e959e583b4249b1c771b1e457a6a6d6511ffdf7b25e298a77e8fd634. 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/USUYG1266494.
Goldtoes Presents: The Best Of Black-N-Brown, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc159d0bd46d878aef8f031f3c8eec496e6cce8302d5a3f8bcd1e8dae734933. 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/USHM92014918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbff3ddc19f126ca1279b0edc62ba99b65d4216a12a065634ff6072c55b309e. 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/USHM92014923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977bb8853a3fa669bfb7599fba0e644cc92468fd12cca62f35af8579ebb9718d. 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/USHM92014929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cc4e191138f2380a32dd5e2a2cfe06de2665f153df77887602c6ad42408024. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USHM92014921.
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 0x9039e223b325fdac0c2d0b5ab94f5707de3693a1bbd9ec115e37085a6c3c9a58. 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/USHM81441245.
Gotta Keep It Gangsta (feat. Joe Tha Voc)
You Don't Want No Problems (feat. Reek Raw)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b05b30648132d18d4cb5c30dc90b42e1102ef8e34906207483dedc5c8ced88. 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/USDY42068430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ad13ec61b07658640cc166b99398b9701ff3ec351d56d07f85468a87d99579. 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/USA2P0816617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b2ea7765892d4ea046caff15b35c8f058b96d68832e00019774a5f501136d6. 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/USA2P0816618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe2d11955e0dd89882394bb61d93d45cc8ee482284c91acd870d86b553d5992. 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/USA2P1178303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2998e9aa6f0bf1000f324b40ec8ca5ac7d758a1f00682711f17aadaa5e7b10d6. 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/USA2P1178307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb460e0375180a09ca401ef295ff9563c6069b3c290832df8fad238733fc44ba. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USA2P1178316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aadc15f7ea582b41a3e59b4bb72ae2096944f07deda5e44de91fb813945552e. 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/USA2P1178320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8545015ee3e34a801d9264a96295ba64051838f3f1aba6d3afe2db2d8fa3c16. 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/DEBL60641567.
Northern Cali Rap Artists: The Family Reunion Pt. 2
Northern Cali Rap Artists: The Family Reunion
Straight Outta Northern California: Family Reunion, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a42fd689210bde03a5c8c2136e69227d8fe31cf30a944b3a6d653cef83d72. 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/USUYG1094198.
Thizz Nation, Vol. 14: Starring Thizz Latin
Northern Cali Rap Artists: The Family Reunion, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b87f6e326297abd106e0767de2693ca7f7a23dc6aeef17adadaf3bf5be755f5. 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/USQY51048903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f155287e6d74c827d1ce89d5e4623ffd2179fd4f5be7385f4ab4dcd2b84e4ca. 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/USQY51048906.