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 0x872516a017adf1b8804cc6127714ab39eb964e8effc2ae9d67c39b80bac9c0fe. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7c3c1a6-5a4c-48da-aaa7-bb6e42772a32.json and https://artists.proofprofile.net/proofs/artist/a7c3c1a6-5a4c-48da-aaa7-bb6e42772a32.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 0xdea0f87bb6de1c6f301998a394bead5e66d8598b81bd3ff02a0bbeba18c7103d. 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/QZHN52275431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f8d795a86e53e55812f15a8e4caf6cdb4c05ce0eb2daa944cd22dff580868f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN52275432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc100405aa965257d52bd8d85d89323606530987a99768b2d00eb1fadbee5114f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFYX2264786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a8b3f3f705aaf9fcd2560859e5fc3375a98fc0451bbd4b2a55b43daac109bf. 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/QZHN52275435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf981d23a66a35f0e2eae23e839e62417a1a00be3cfe1a2b123269f3374744ba2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNWZ2216922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0464ca56038fcf7fe41cfd2a4ae5bb3047139c95d576c0b308a25b31c4cfcc9a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWZ2216923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29322eabc8d43b597566b3af995de1ed237a0ce7e96a23a3f56aae05dc7cb1ce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWZ2216927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabf5cf66fe704a7dd3d084f11ba253f7db1f26dc8871295c9e4864434a9ce2e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2265383.
Tarvii enää ketää (feat. Gionni & Kunta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa9e321e3adaeeeb0e3162c6087c60f89d4cfb8ce8685a6339238fb8c7bc4a7. 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/FIHYZ2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29deb8be8c2d7e2ea67f21e4d728da2397708b88f9ac42c61a5e48b1953debb2. 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/QZMER2380357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b17299724af41dbb908988bf6affead89c02de313c5b2004d3e70a0d8584b2a. 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/QZK6G2274911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34d983ac052c20195dfcac627315b67f589914c88fc7539bce33e549d9c4639. 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/QZTB62264264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6562fdd0e4a009a22ba0744d3d3c8a6c7939cdd839ca4edae4c8f2f2e4aaf027. 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/QZWFJ2365619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce9034e63c81010e39036a6e593a4d2a770d6b5ee3b7739f5981252bb647540. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIHYZ2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4af7fc8d48f1c6e8db082bf36236b7c1b1c79a27679891bd2cd8b1c0feb127. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFYX2112327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cf6bdece3c37f8b2b370a9bd455798d56ff0b84f6bb51c4fdb27d945f8fe3c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYX2112329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b17299724af41dbb908988bf6affead89c02de313c5b2004d3e70a0d8584b2a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6G2274911.