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 0xe1d8372650d9cea83c8a0c675295ec302320912336833483cd4487f2bfe0101d. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bed7bb2-e3b9-4935-a45d-67760020e20a.json and https://artists.proofprofile.net/proofs/artist/2bed7bb2-e3b9-4935-a45d-67760020e20a.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 0x9206fa06d64443d49b3f56ed93f72e96fffdae056b9744bd7977aaaf74bf0cfa. 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/LVL152100784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b0c1cd59bb40c788bb127f15f2f6e1c11289b1f750f0be960575590dc07898. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/LVL152101874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d51b8feb2cfebad6396bf2d95d15600529c70b9769d8f0c6c86da70333f755b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/LVL152102755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a5329d0e06340ab58e0739f623c8b6542c9a612c3fc0ad800794609d7644b1. 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/LVL152006148.
Autorkoncerts Dzintaru koncertzālē Mīlestība ir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9abd8d241dd560c617af45fec575038ce02cacf68f5cdf0d7a44df2dfc1fb7e. 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/LVL151903633.
Reiz Ziemassvētkos 2. Koncerts koncertzālē "Cēsis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649c98b561f0f3fb2af4e59aa6e8936e43bbb98d74804a25e6ed3dbb9d89e911. 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/LVL151906745.
Reiz Ziemassvētkos koncerts koncertzālē Lielais dzintars (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef03093c7d4d25280e6e13dc84c62a9c9f26ff92ab6a08d990fc49320277ab3. 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/LVL151900356.
Autorvakars 365 Dzintaru koncertzālē (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30fe87568e8df0a337c419fc96916821fb23cf573c438ff450c1d2a536f26eb. 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/LVL151804705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddafa555f0ea27c7a02f002fbde382d81c91b31ccf1ad147ca3b6c63a5a05ca. 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/LVL151902667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db523ab9337fb7bcd235668ba46c928478e3513a0310fe9c3cc1f4d8c0627e8. 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/LVL151804869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6e5598bbf96d51abc56192482a847810a6ab19850e0971971f2de4d5a6b2a6. 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/LVL152202727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebd1af24fabd23a1590ecd908884b2a803fad2547d97b118f2e4a3958376f28. 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/LVL152202087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75557a907afff44013cdfd846b843468b44d4f93b41b3b0536dc6e20fefcfdbd. 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/LVL152103132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d51b8feb2cfebad6396bf2d95d15600529c70b9769d8f0c6c86da70333f755b. 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/LVL152102755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b0c1cd59bb40c788bb127f15f2f6e1c11289b1f750f0be960575590dc07898. 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/LVL152101874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d5b362cf2c80db3534cf57d80aee7a2f04f5323a69bdf5e9d3145684080e12. 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/LVL152101446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a5329d0e06340ab58e0739f623c8b6542c9a612c3fc0ad800794609d7644b1. 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/LVL152006148.