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 0x8f94bbaa1261fafae53fa66faae179fb1342ae02e4365c728a20b058a1afe81f. 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/fc72f22c-a0f7-4b7c-82f4-a665ed4e8e01.json and https://artists.proofprofile.net/proofs/artist/fc72f22c-a0f7-4b7c-82f4-a665ed4e8e01.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 0x7df454b797eb269459656cc49175ee3bbbcafd8360046d34699e545f5ab3e33a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUMAG9800442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72252bc3fb09bbeca52f3faa6245c46fa4358a8189044ddff452250e7163686. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:18:15Z), 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/HUMAG9900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefed2000db443760f3e0864f756db522da08529087b722798b6cf7de9295f24a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/HUA181523202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04be46fd34e894076284d0cd2d76bada9a86bbc5a9f344f5b2f8a8cc198b9be8. 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/HUA253794412.
Képzelt riport egy amerikai pop fesztiválról összes dalai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee07923dba38d76e98b78405e2981b38199c225ae57301699dbe96cd07c2114c. 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/HUA253765914.
Harmincéves vagyok: Hány cédula egy élet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a58b3dad566f81413bfa409ce4fd5e55944c82d7158866f1f3edeb6aa58b88. 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/HUA253765915.
Harmincéves vagyok: Hazudj valami szépet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c550a28e18f80915b784b13c43b4085c01d0242ed69093321acb03e1bf10678. 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/HUA253765916.
Harmincéves vagyok: Altatódal felnotteknek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7b5fa28d920c3de2d46a9d90f867dcecde0123a2e6e9aebb575228eea9abaf. 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/HUA253765917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cad258bf4331e286fc9acb8e22e6a5500202d78f367438db55e7220004d55f4. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:35Z), 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/HUA253765919.
Harmincéves vagyok: Mi Is leszünk szenilisek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f4c1449ff5f9718ae5b3bc8c3698517cf66fae8e69208c69f02fefccd6da81. 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/HUA253765920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5676342b989a23b7d5310360416e0efe4cb8c4b24634330dcdd9ba991a259f2d. 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/HUA257100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269589a0f4f00c88989850e7cb3ef81f295041532c80c4ae0e5b0586325aed40. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/HUA253765918.
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 0xd5f8ce951564112c48f1e23f1a9fac50b911ddc235792a613586dca5d0ec58d7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HUA253765921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1e159617251f5bb53b4d21c589b9d1352d29c5b371cccd6962d65319ccff0c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/HUA253765922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d8aec88023dd1f50fd357547ee45564e3976de6a5346ec5b7df64a25ffc0be. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HUA257103015.