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 0x1d11c0c1b52bc95c2d8f9282ea4f82c0180f9e15e348218038029de980628b50. 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/4f844398-7f64-48a5-9720-a11f4b03ff77.json and https://artists.proofprofile.net/proofs/artist/4f844398-7f64-48a5-9720-a11f4b03ff77.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 0xec5aa949f39717dad37de2b0464803f2af0f2841d6ad89132230645430e3c7a6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6P2015358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d9b7d5fb81693039c2510c417ab66893956b2b9f40bb0cd225889265f19d58. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZHN52111482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9035b89a7d39a386ada10454796db8f6ce4abffc0151c05d771cbdbcf59d093c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA82277485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80788dd598bf45560ebe27160b439ca49b70320ea7cd06a46c390485ce0d176. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6P2202003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024766e4763672b1d1bed21a20b14e950ab9ea1b1d1ae8706a45646cf928679a. 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/QZTPX2113708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd728bd1fcd2b49fe867791cc90eac5a1ff2b31ebb8ee6271c8d183e58c969b. 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/UK43Q2112790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bca031bc880facb793a671cc47d6c459d91918d85158e71208b10ceba61b1b6. 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/UK43Q2112791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb6c08099ad6951712d58c483114c265f00bbf96195394804cb589bc2e42d1b. 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/UK43Q2114181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17936507ca4d5129e9d8a12894603af63b26a62e80f1eaf07fd267e9b467e2c1. 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/UK43Q2114182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d98253f0592d70b46a6695eb2625e4ce27bfb9db2712fc439dfcaaa644da07a. 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/QZNWV2087155.
Say Less (feat. Laxy Bbk & Tomi Obanure)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e06ba78e44a112d57fb0f06bf2bf6e25cc57ae634d843ebaea331f257a834. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUYG1396242.