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 0x588a53b5f70795abe83594bdb797d04229a6e0411e1202ebd31532be3bf9f06a. 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/3e5d0f85-954a-4d1e-a6e8-68dd23e3cbb5.json and https://artists.proofprofile.net/proofs/artist/3e5d0f85-954a-4d1e-a6e8-68dd23e3cbb5.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 0x93e5f8e2eb740f61ad98ae49933c5fbd5e57f53f909a1e0c6ab381f293af6c2c. 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/USA2P2208851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d6b81547e1533f1b19d5b09e5374f20d44c9639164f2773c8be1bd9c2ed336. 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/USA2P2135652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02819a003044bcfdc4b5c1b326bfaf093c91c20df6ab8c6ffcaf051df3da9a7. 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/USA2P2244148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe126a6727688ee4bf3c8d7e77ce1634b95d92fa29c327a9045219f9b30e012a. 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/USA2P2225826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd28660be5d3da936381f1979fd86305296a528fa409ef25a4a663c9d512e43. 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/QMFMG2346206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2a07f5215b0b5a29e424b4318689df608ce7f72de6d1dff55d452674bb3359. 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/QMFMG2346208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf5e6c82b2f775f3e8ad4c74cb1c96139c538b7cd107e45a6774074f9576c83. 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/QMFMG2346212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b86358e48fb4dd9594a53459f3f795355ca4a31f64fdac14ab511cf98c1a8bd. 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/QMFMG2346213.
Only Option (feat. Rob49, Luh Tyler & Loe Shimmy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e5cf100853aab6a375fc7e5d3063f6f15dcc99b42f05ad1a05876a5d23cb3. 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/QMFMG2346217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4be627c0187e8d87eb402ecc4e2c4030a9c1093bcc2b4eb3866a38adbadba51. 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/USA2P2240836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7371b867def91952c89a56c199f8f24d2f6a2fc862375553a6f17a15551e1a2d. 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/USA2P2244142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bb0a12bf0389f40b483f8b4124ebea44224f92b8fbdf55b9ff3033305aac2c. 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/USA2P2244147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4c698c410e241dacf0f4cc6b2a1f165b8ae0164ea802c6c2cf8b8748e37b75. 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/USA2P2244144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec74e52b1c4156552d35b2baadb929363408b6937a88cab40dfb1b36d9754abe. 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/USA2P2231334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae282b82ac863d2979ac083ff7e977138d2cd510db9c198eb7f19861eccb4f9. 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/USA2P2244145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1138de7ba52c7e620fb511b2458980ed1aa2093c6d8cdda735d6f8d987fbab0a. 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/USA2P2244140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e866263e4949914215398afbc698df48f3f4beb4c416641b4a4fa4f290a353. 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/USA2P2244137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad8ff66efb33720f74301483e38c1dd37bdf1ab73c3b480b274a52c0bd4d639. 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/USA2P2156432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9c8f1d9bdaa0520150f168a442f4f2f70f1f0e7fb0a42f6ecb7f50269f9636. 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/USA2P2156431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c3b4a14ee1d6ee98b6e54f04395597d53c6777c841d3258088ec65669a09fb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2P2156429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a58ba5974fa4561550965ad067cd54af463e1f08740ed1579e740794234b20. 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/USA2P2156430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d6b81547e1533f1b19d5b09e5374f20d44c9639164f2773c8be1bd9c2ed336. 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/USA2P2135652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b2178e7cc8d61764ca5c3e927d045fe794dffac0bd7619619eb7564dede1c9. 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/QZQAY2390914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517b06fc3118df1d5cfe93f8590cf1f66054624e70df6670d55b9d5e8271617a. 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/QZQAY2320695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19c5749753b6acff3dc94566611f279f51d6f3516716b5fc856c88c1d27a78f. 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/QZQAY2314406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f5ef4b8ffd712c5ab1c3122b246629989257f8a96e69d1baacb7b4bd47513e. 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/QZTLA2326416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4be627c0187e8d87eb402ecc4e2c4030a9c1093bcc2b4eb3866a38adbadba51. 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/USA2P2240836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335f09d919dbfda82709a1ae269a68a67580f59e7000e65bfec9b654481f4712. 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/USA2P2223269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb437dbe94eb8a2bec04d2ee7ea9d3fd0e4c26856995dcb91dbacee1e53a7bcfa. 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/USA2P2206773.
Can't Save Niggas (feat. Babyface Ray & Peezy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc8c2cd5fd3462afe7a811e19bfbb98e710a4a803f2feac00eaba7083915a66. 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/QZPLR2071929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd55c556860fe12b0c8c7a8687d496d18a9d35f68ab2f079d3ab24a22826da7a. 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/USUYG1453798.