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 0x13f6223cdef1689da9ee9ec31e728769759d01cfc35108c5642673c0328d6845. 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/82b0e635-5a21-4c88-beb3-dcb51897b5e0.json and https://artists.proofprofile.net/proofs/artist/82b0e635-5a21-4c88-beb3-dcb51897b5e0.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 0xcbb69d07290e6e21237b9bc31626a3ba6dc420c7b53fc8bdfd95ac373eb8b163. 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/QZGLM2399599.
Everybody Wants to Rule the World (From XO, Kitty)
Everybody Wants To Rule The World (From XO, Kitty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603991c1efcfe33b84c1bf3c877945739d0906d45e0f4c59b227b6e5398c151d. 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/USLS52342001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1966637315ba79c5b843e25102a740293abeb4227e5cf14e36728795d8868594. 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/QZHN32287954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42b93b6139133493e0916ee5f31382ad4397169a22d9710beaf3fa9529437dd. 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/TCAFX2194856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4212db7e79fa564f872b91a50beb3473fe72f61936d1eff62816895ab620492d. 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/TCAFT2192552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b207b8530d4f372f2b0c798ba05533287810d4421ee651dbb148190a214158. 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/TCAFX2194871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc393607b6f07ccab5ae9dd21e3f35a4483a36d9d680d3616929f2017cdb832f2. 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/TCAFX2194873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc21e791f64aaa99e9ed220a6109ab58424d06505c18b5d09d43e64c7267d62. 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/TCAFX2108675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3de02dbd6412f00638fe91e606a667a93a09f742650af52185944bf68bfb66b. 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/TCAFX2108663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94363c5e62c0fad8878445b07e6fc737f4e21c3acdba14cd1dc3b2839ebae80c. 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/TCAFU2180039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcb7ce34c5e04813781abca27600c8e505a5f2bc20409c41d37b555cbc8bd3f. 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/TCAFP2165782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa306703d3967f5fb4e92cb277b37c4b53df03899acacf9515ef4977a93e9774b. 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/TCAFN2172071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52840a4173419fd0ca31ed79f1b7db080d84be3160ddb20a4e2f9e2441a3dca. 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/TCAFF2049192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120c5e0e3f16d6ae41562d48429196b5fcf0ffda4a7529e5fd616de7f2d3fcc5. 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/TCAFB2027953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9180671eae23ae8fbd897019d0e0ea2cbc8681ccf2d165153cc2ba33ecb5268. 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/TCAFF2049200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6771c3b92070ca71f694c1132f96618cc188979a605e258a1bd09e2bf73b913. 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/TCAFC2000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba6638c95f3cac3e2ee95279affae99896da5864164e20c827198ad32e4124d. 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/TCAFF2049298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9012142d645b665a6a9a9d2ad35caf7a698d16638fefea497f2fe3d4e23a0eae. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ93L2046376.