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 0xb94685009016f28300b2a4b5180e9408ba9e6c72250705ac023294a6769ef5c5. 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/45ea7cb0-d132-45e6-840f-801f2019100a.json and https://artists.proofprofile.net/proofs/artist/45ea7cb0-d132-45e6-840f-801f2019100a.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 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 0xfcaba3bcfa0edd4025950da33ecee7d150e36d14244273be196e079ce608f365. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DEGA20800197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b7a56c4483b4128bc2979dc5340b4c08ce6e458b487c95c5f49e84bce9a03e. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/DEGA21000434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddd66290e8e08a7f6aa92a15deb4d2472a5c6e63c6746c378dcbe7ec23c7eb4. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DEGA21000439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a8bd883312adf8ce3b8e2621924183a6f4d6efc98c3e946b4bb3c48229e54e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEGA21100584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbd02347e78e95bc8bf7b7f4cef49cc5be9ea688eaa37a6b7af6bba57bef387. 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/DEGA21100585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4b19f3fdbbc327e465b1a2b912a5e053949d9b9e95cd57272ec184fa551036. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEGA21200652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29309164f0ea0f873537b9eb7ee927ede0f40e134be8e90f018fd14ae451c4e3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEGA21200752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ea2081b669903e218fce027670dd38f0a95c7012077ef28e42bfc0694a5ea3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEGA21300841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6980cc0be86af70394c8b619e32601ad97788ee477753d4a3482b868d0fb13a7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEGA21401351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25d6b4a3caceba9d197fa76b271cdcc11bf5f1492827cd70017db2994e9f869. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEGA21501659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5438d00e7109483d8672ffa5400bae5ace02cac038b7cc5fee7914a6ea28a600. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEGA21501866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e3cd56494aa7770e0831ec926651eff497e9c1d5626f0ecfcc9f28e94226e6. 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/DEGA21702270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3291e8fbe6da56980aa74e01a9bbe808a4685906a84cc41f7d15eb43475fee2. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:55:05Z), 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/DEGA21702403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eaf65d13321944eb0a9114bf8effb0ed3c2cafe65c6ae9b5d2e4c9deec644e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEGA21702481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e3cd56494aa7770e0831ec926651eff497e9c1d5626f0ecfcc9f28e94226e6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEGA21702270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eaf65d13321944eb0a9114bf8effb0ed3c2cafe65c6ae9b5d2e4c9deec644e. 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/DEGA21702481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c984e5a4c7bdda921d838d91897b766d035bab1b2e9c8ba68e50f2220ae8ce. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DEGA21802531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88fc2f826070bb942c5c254a46bec0575bb8e7e7c2609ef19b20897919e16a9. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:09:18Z), 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/DEGA21802662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc49f0b466ec09f2d52da91703c232485f32ba19fb18ed8a5ef91da146082e6. 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/DEGA21902859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547755402cc7bd1aba14897324f4c412a13881c9fb25f4750a247a82d38a1b04. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEGA22003124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82b5cbd6b74d3bfde35ac9f7c60e8f8fc38a06961fbed48fdec7b74f4b95596. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEGA22003131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b5047cba38572c548d36a16eb28163ab530b8135ca4b3cdb8765e269697027. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEGA22003132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2687b958786cac1c330b68099610340840ba51acfa68e7e9c1f0c18bb5c312. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DEGA22103390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed0d7f7166b743c4452b6b0fa23f8f4e24cfcc2fbc88f7c7648d59bc8ac81e6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEGA22103431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f90e77f9d14626a5cf141241aa1a20350620814003478a19544a908f1ccda06. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEGA22103534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c78f62d429787e135fc6d4115b75836e43c0ff4f93413fbad9d2bfa36fb412. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEGA22203659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38ae9a398203893543c4870eb19eeeb1f60ecfaca1dab45bf9b5a9953b9eb9d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEGA22303814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef37e671da89b325990422d1de6ea61e8e6b527232480d687583c9da08f76808. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEGA22303869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe773cfa702479b0f195abe8d7e85852ed4576179c902edc0b5e28ff08271e6. 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/DEGA22303883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82401f541362e335bd6ccfc68d4d59254d2a59065b32ce81347b8d871e8cecf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEGA22303977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d01d813e08f819ff4db7633e61fee44de2ee0e8fb33c90a81cb79999d7abd8. 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/DEGA22404181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795d1abc271e92b14a0c356cb638d41b97340a305a4d5d1adefb915fbe2e6f89. 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/DEGA22504325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120f26e0a5601481388c2f211cb62fca5eecc8b47e1b3b14e888443d39369963. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEGA22504327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0949111667de72f1473619974c2df9729461d7e30a75e8921eea8098a78cbb4f. 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/DEGA22504328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48df5c3f93ae938e4dad7685b28d97b82c9113245217d95336cf6f5492b98d63. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEGA22504330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a7f6f1c306dec1f226c5583dc45869b36a287d00c55065dd1c8bbcf7993c8b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEGA22504333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963be6b7c36c0e96ada9bf3065d574ffcccb91bfa1240b676fadcc9e34b76955. 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/DEKC41000027.
Stupid as Fvck (Minority & Stryker Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fc12c3b4746101f64c21959d0be4c9b3339f0d9bd2efba48368b6b47e48bdf. 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/DEGA22404145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e9a7dcf9a333ba760eee118704fa205eab0cfef1bdbf3fc6b7108385f622f4. 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/DEGA22103466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5464e42d872cca89e16fe073e99a410d17e64dd1cd22047c0baf1e80c02c5715. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEGA22303946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89673233857a05a0e12cab5f94acacb963a5ef67b6568b71b5fad3d917adb39. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEGA22203686.