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 0x000bf46934b856213e930f96914459de4c747ce4eaea640ec0127f24a30427b5. 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/cb02c72c-8495-48c2-aa72-f21f896926ac.json and https://artists.proofprofile.net/proofs/artist/cb02c72c-8495-48c2-aa72-f21f896926ac.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 0xfaab0cfc8123e31bc52c5771aeb9ee3441f4a36c107eb14be685e3e3c86d2585. 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/USUYG1078058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4e433f562d69d0a3188ff335114829a2b0cb7b685f4ead2b062a7227b210aa. 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/USUYG1058309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535dbdd5dde82479b5e1d9d09354b3ff223eb803456c89534468116c28d134b7. 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/USUYG1041364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736b974ff80a910292046d074ee14c6538e07d346ae6b2c41395d032ff857e2f. 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/USUYG1041365.
6Double0 PT2 (feat. S.Dot, Tay 600, RondoNumber9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81735a06d735e5cad70999ac18bd50ece4a5f541e281c161cd6a6ad5daec9f2a. 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/USUYG1041366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d14db7aab33b927001860ebf166e209b697e4dc8d90dd6a2ccd41ee4fe57505. 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/USUYG1041369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff42fb83a46b4f84a3f14e28bee6d5e5abb84ab6cf926b4d17fc6caf128a094. 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/USUYG1041373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0566ded6411319bb85f78b0f674f9618fbbd404eb9e1224d63b90a8578a6ef28. 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/USUYG1041380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd206b6454e4db847e17e9ffbf2b95ea7a5cb14f0ac7c16cb0b8f0066da2ec26d. 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/USUYG1041383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65abac5d6272ce83e6a55107a923537532581ce9e88e18270eb99d89a92fe60. 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/USUYG1147543.
Oso's (feat. 600breezy, Jusblow & Young Famous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a8f41884edbc00836d614070d773a12156e484622f7938077c5bd71d1f6901. 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/USUYG1138602.
Keep Coming In (feat. OJ da Juiceman) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a986e0f87b1139689aa2715cb4e56a1b74de7bbf232aa75532d0ee82afd577. 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/USUYG1059028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb803abef81cecbfdd13f9b48c452007d3bf37b866b859102cabab427ee6b00f4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USUYG1051112.
Count Money (Remix) (feat. Rocko) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75153a02d52fd9ca8cb89cc0154ba78784b28371126ee1ba308e9f29f9c849d9. 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/USUYG1023333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8570b05a6aa6b6fba00ab6f3200d82e8d143a24fbcf1b20acaf38106babccc0b. 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/TCACA1410779.