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 0x1aadf139fa9c4a5a875f53c2a8f1f5fc188e41eaa03f5dd78a3496cb75f2b3cd. Chain 2 (Bitcoin): anchored in block 954015 (2026-06-16T22:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3551d23a-7f93-4f21-af9a-8254e48febe2.json and https://artists.proofprofile.net/proofs/artist/3551d23a-7f93-4f21-af9a-8254e48febe2.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 0x669c0b7b4889d2fbab15859fba9261418a69106ddaef181b2db66b5b2e3e8214. 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/HUA251685805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b837c09acb6fa78b3dc76002ca9fa5b7dde3264102418f9462e047e50eba82e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HUA251685809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c8505629618c2cc99e8b6dfac5c4375030d64cf7180093c9b5e91f323cc438. 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/HUA251685814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12eaba0add9b8e1a009e2479005583a5732a5ea9a99a87e74e35014401f543aa. 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/HUA251685816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a89ead33917201158aed6c43aea9257d49ffe59d7b51557e481754b14b37851. 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/HUA251685818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10f3a785d2720a22a2b8e68289550194f8aa53ac8ffd2ac79dfbf6be63b73b6. 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/HUA251685819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db7b04042c82dd5e4d41328b27311c113e9ba9be9ba27e74bd9e718839dbf03. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/HUA251685801.
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 0x05aee543ef7eb9ce4074894c44a0f239f049507cb749ecc85c768cc1a7a203e3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HUA251685803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0679f444ca7d85c86de7aea7d02971fe6ca242bd3762fcac8d03cede1e3b1e. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/HUA251685806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b6c3c68e68a6de8c290800d17536655fcf972ae12c597820cc95d293bd425f. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/HUA251685808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa029377f03cdc6b5addcfa643c21cba9b16433b4bf171b8fb4d1556378b6b5c2. 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/HUA253793301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef5561b048901d02d7bcd81d660b57ebc326f74bc22d2fd1355869939bf07a4. 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/HUA253793302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5f8c1fb484a24b8509161879afac00b1c7eb70f80f8e4e70577df7b05d9968. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HUA253793303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16ea97f630214a0dfe6080e4a05380438873b66ea8c7b800be0e235a297481f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HUA253793304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a95f815c2f797ded3fb5e390676082ba3a5057ed9e0cce3b962d4790cf011f. 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/HUA253793305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbf107f249a4f870d462eabfd24953082bf00a0ab71a5d6a4bd8de0821e0cef. 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/HUA253793308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65316a3af6b2bd403f9ac451d83dbe3ea9fc967a6e7680a3cc45765182b2463. 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/HUA253793309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19aa0952fd309ce2468e955af93f69a8aa293a210d0c8be37bde8b19d94abfdf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HUA253793311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a0d6b1f5aa93406d5585626ebc54014e298eba718bd8d781d6311e1c4edac. 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/HUA253793312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc5544d5a007d9ee9daf281b2a93f957be229cf664a72cdc63341fb69d6801a. 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/HUA253793314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021b4d04bd049d34a4303834acff9f1fe610fd34a4584d772191e9f7d407110b. 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/HUA253767503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175783c73291bf5bca4b3a724d252a208d0affab58b1326b7f6619cced12750b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HUA253767506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17eb474563c420a7ab44f31ceb9b59f4c3651ecd8bf985a5e7d4275f52d0faeb. 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/HUA253767507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacac543982d9ac4f0c6ece800fa4a3501cf593f5897015af4934bd79010b5bb5. 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/HUA253767508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2541521a8b834f27c04e6c0f95d2582c1ea1803a6ada847434098b70f6d8d2e. 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/HUA253767509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496cc9ebe29e85e46731a53b997fcdd2c29b3f3460bc7f8011bef0b63ea0ab32. 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/HUA253767518.
Azért vannak a jóbarátok … - Máté Péter dalai a zenésztársak előadásáben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b91082e21f7282df8da1b9844ad80330599658c7435dccb3e09451fa88bc832. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HUA257125116.