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 0xa9fb9871ca7407661f2d6adacc1e85ff95389d3680cee3ccc3b308eeec5af6a4. 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/1c01a2f7-103e-4a2f-ba2c-f7904b2e634e.json and https://artists.proofprofile.net/proofs/artist/1c01a2f7-103e-4a2f-ba2c-f7904b2e634e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ez A Dal, Mit Dúdolok Neked Szól, Hallgasd Jól
Tizenhat És Fél Esztendős Lehettem Talán
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 0x7ac44cec4ad4e117efc1c2abe2466171cd1fb495a47e50b5f27ec9fd024e01e3. 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/GX5MX2465894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d58016755b4ea4b7b1a8b6df4ddee643e3fdaa139a9640727e32378ba0c54d. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GX5MX2414379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5b811a38e7d2781f5386bf5fa3b32c9e3be1d1b4d448549c2acd7666f00636. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX5MX2469765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b81811ec7acfee0832e669c94106ae25d559b880be30e9bda4fe679bb65f7c9. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GX5MX2408803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e435f58df352a7735b39a84a56c9b1efa94415d34f2c83690f61b659f720398. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GX5MX2457660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640bceae793295d3684ee244cdf2c0d1fc0673e5494a2c536f9df5d018314bc1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GX5MX2429012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4f1ae555e22d52d3a50e219f5f0de563d2604e921ced2b59641cb7069f0e56. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX5MX2483630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba32321896ac63b2b0c3d4d2df55e37f9396058f2a9857cf0697c6d4a7c8796. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX5MX2445622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f2aaf6ba2989255e2c3e95495510aeef1a6ef77099cb3b0a9e5c5f87efe3be. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/GX5MX2448752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63eb51bd97e1b7c412d3394717c48e2e56a0af61284f0985f7d8c6d35d6e9d1f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX5MX2490844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f6c44497a91268a586a0d6bf16e20fb6a41ff764280f6d0298ddc94dfa9328. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GX5MX2444308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056014f18f023606aecb4dea0477810e66af44023160cbf0b926c5e4065fefcf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX5MX2463484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87969d4bd40382d3e5ea5b0fbb8919f77a9d9d53afb467618b99cdbaafde7d63. 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/GX5MX2472867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08099e83fd1eed524c2c0b72c4a0f972df9de6b7f4a416fa6759f4d9e516fd0e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GX5MX2475781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6103669c7d0d58d98b242afbaa2b3e1acef5ab38b91e264e516fabd2db5ba5d7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX5MX2415943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad076b3b6ccb64c7379128bb481bd6482fbc0e9fa13dbd5b4ec77b7081a7be42. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GXBDS2459534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa812dcfbac02730bde185d9e97f838a0f031393b92c0d25d30939f488b8df498. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/GX5MX2425116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6176c4a29c3637c557f9e32a779f6011e26b7b8e9b22315a6320a1e9445fddb2. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/GX5MX2483909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00b0f778ce62182452d3a04320400fa114894863ce38bf096be9e8fe22ca384. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/GX5MX2443399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d217543e8887b732bb0c77f57d91487456e3ae864751d8ffc8baa7224e6d97a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GX5MX2498801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad076b3b6ccb64c7379128bb481bd6482fbc0e9fa13dbd5b4ec77b7081a7be42. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXBDS2459534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce5359557a9bd727b9e9f29c95ab743d92b53a182bb7b866dc3b21027c7dcf6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SE6XX2501812.