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 0x2306693edc972683622166e011b9283d339562138c7ff35245e2df8171c18412. 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/3e86728b-9e31-48a4-a610-90cdabdc0067.json and https://artists.proofprofile.net/proofs/artist/3e86728b-9e31-48a4-a610-90cdabdc0067.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 0xabc8f76d50297b056fde4149ad101c0ed9c5215d3615073ea6db0b606a3da9f7. 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/DEY472178640.
Fight the Feeling (feat. Kendrick Lamar & Iman Omari)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb270115a2d5db93f6256a312714ef507aa1c802f5b5e27038b247944fc1774e1. 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/USA2P1829656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0a021798e92b7af5060bd5c90adde733a83029b02c75b9886dac1321ce734e. 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/USA2P1829662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0d98f40e09cf5233aeea2e245b6bff4e2a8d848dc310c129a8eff72bdeb569. 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/USA2P2149102.
The Love That I'm Giving (feat. Kent Jamz) [from Insecure: Music From The HBO Original Series, Season 4]
Insecure: Music From The HBO Original Series, Season 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cd456e20ee68a9f647e83a3777b8597664aed39143f34a03e4f6503deea680. 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/USAT22003432.
Being You Is Great, I Wish I Could Be You More Often
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa118d2e5264ee567d18b5d951a7de61716ef3a1f3aa0c6ed81a05ac80377b97f. 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/QMBZ91621074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b88f85a2319cf08d486a38348ada7ae15d3fe06a25ee4a96b5eb7667c25b83. 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/US6680916888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa151cd8306210956fdfd895774e41fb353c83e9c9db1e164f9d322ec287509ef. 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/USHM21524609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73d47aa9275905bec20f08449e2b0bf5859b812e98aaaf13aec3953151e0726. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USHM21524610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcec9b50b6673b1f1400598c5ab3a75d8bd3d0a0f861dffa25905717cfd1f6d. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/USHM21524611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd353e0b414be3dc99d8e0769820c92eb66389df0cd9d640019791c6eb13fd7. 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/USHM21524615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfc02614751c70f5382995923e294e45f808d311a899eb6dbc73f0351d0aee4. 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/USHM21524616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91202170c2b2059f2e795fca66c070a4533901ef6d53ff41b08b70561cf081c9. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:25:24Z), 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/USHM21524617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c63718a60cfb1eec3ee9113a806542c94481c9bd89e26af9ff43d2531a1f2fd. 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/USHM21524618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d31bc647a567b347d51458f8131d4402b754a87fb5a5ee8544ca245109d0283. 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/USHM21524619.