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 0xc7d5590b57cbd59d785ff14bbee825bf64b4413248685a04c2c3aaaf862b1a82. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e164c19-9bf3-4665-b193-546ea7bc62d2.json and https://artists.proofprofile.net/proofs/artist/8e164c19-9bf3-4665-b193-546ea7bc62d2.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 0xdf7c66a6bc527d9a364eaafab27a2b9808218de6994c05c89e42776de641eff4. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/BRUM71902773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2ed7123ba8000fdc5b6d34d4aa5eb170a0840c6714e822a147620df24b07b1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:28:06Z), 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/BRUM72003207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe203513dbcf593e333bf1f55b515a856113cecd1e84219e8009d848376297265. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/BRUM72003399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8725ccbe9201933e8dc8c6052afbf608977362cf84b3ac80fb9049802742ed. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRUM72201081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ae150007ab04a4f8719d9c8a7275a65c0d84315c3963100b35eaafa9dca59f. 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/BX3E02100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18953017fc547477d87fa56e780f662329fd98ca341708d08e6ec97e4f65fb34. 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/QZWDD2227775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f17e20e77d9bb2b348ded4cc72edebd56157802fccfb7db93c6d3aef4678cd6. 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/BC65S2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964f7463f2aa32ad8bcfecd6283e2a68ca2def655ead3d2078b8321be39951ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC65S2200012.
Sobe na XJ (feat. Mc Kadu, DONATTO & Kotim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8a73d4c494bea6ff3644f15aad2fcca6c1dbe235c6d835f1b022b851f81f88. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCDMP2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2ed6829309ed5058efe9ef0b2a70083b7e54ef9fbb58128cd9a8efeb670bd8. 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/BCDMP2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41493884a1c8a9570e5dc14645e8cbe46b1ca744636f40d5994f865bc4332b8. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BCDMP2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea059a1de938f9f21418b9b1f135ec14bab2c3eb504df2a122e4e064569927c. 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/BCDMP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b10a40308f0726a75e5fa4137646ef12ecc45d068a9bb41f963f172cb7cbb4f. 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/BX5EU2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbdb0c9b272307ebacc36ff9df3e00bf06540ff6335353d08843d3691f100d8. 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/BX8WE2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5e7e9d94c7bc7f9821e5332930c11d8fa6d703625ee245404f8685c9fbcc48. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:01:26Z), 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/BXJK02100001.
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 0xe1c2517a194d007291d6f64a32c64f28a6cebaad5598eff24a2712179491ce65. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BKDP52300028.