Crazy Town (sometimes abbreviated as CXT) was an American rap rock band formed in Los Angeles in 1995 by Bret "Epic" Mazur and Shifty Shellshock (Seth Brooks Binzer). Their 2000 single "Butterfly", re
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 0x7e8d66b7a9e08db53c2d60941039f931dafe7800adb7b851dbf12b5fcdac6cbd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa7c4c0c-408a-4ef8-8325-2fa2dbfb5707.json and https://artists.proofprofile.net/proofs/artist/fa7c4c0c-408a-4ef8-8325-2fa2dbfb5707.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 0xd1ea3bc7228b06f13502a7a7cd54c2fae286ac7e4050ea70c16a8f6d2c0210da. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USSM20400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5175381cf2fa37947030368816bc10416eb61d5b83c9c6d2aa5d300b51e73d24. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USSM20400616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a58a7bbd9dd28a649ed683b02d53fabfdc65b790ad8a333c364d54b81233807. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:52:32Z), 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/USSM10001159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6665320b99725c2a909ba0bff00b409c8f05ccdca8621ed7722e3ef719437f8d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USSM19911427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa922fb09072ea9e2b3c7316450f20c1ff7729a07f678c65b31051e7807f9e521. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:33Z), 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/USSM19911428.
Only When I'm Drunk - Explicit Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8371b79dbb3bab1aef65a9e57c36376e2562c664e917f8444cdc3f4d0ed7591b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:50:32Z), 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/USSM19904225.
Hollywood Babylon - Explicit Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9288968102b3b578997e0cf3e292ffb01087406f2a831ae621aac156669b8958. 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/USSM19911423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b1cbc1eda3d870596ccfdabb8f9aef3d70f9aca72bcbc552e3cc3ade3f6993. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USSM19911420.
Players (Only Love You When They're Playing) - Explicit Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d118ac4a15c6cbbdc1799e657ed78834ef9504d77c62509cbfdb7ad4e09b60. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USSM19911424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9000b09217e91e48918c563f2010c5ab1ac4a22534fc09bd2239730f922f450b. 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/USSM19904226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f6de99adaf5f4c46a0a7d629ac5d67f2806ad0bdd1afe82d5ff15256d59c8. 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/USSM19911429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd210400431f5f66dc2f966262148f638cafba443260c6e6478ae0afd2ecd0bea. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USSM19911425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f28f092787d0ace469ff7cfe39d16b80909499f35c3e0293fcfcf24dba72af4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USSM10212637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7860ac5cee20748b7797729da2a3b8d8464cf8f0c28cdf6b3b04aab6fb50357e. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USSM10211630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d212fd3af74d498cc73b4cc2afecd6ad8da187db71057694cd52d1ab3e088d1. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:55:24Z), 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/USSM10211623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8fc3a963acd219bf58187ce3eecb4366cdce44bbaf93fa95d4a12f50abecb6. 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/USSM10211629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8811e96cb6b0ce299cc32f13fe8f94c30db323b53713cce972a4ee2c153894c9. 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/USSM10211625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c983a29f8334b1bfc82d9ea1b925ac3c35b02fecfdc7d434adfc4743a1dede. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSM10211632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6441401789cd2f234f414fe4eb7d0df6840b860207b77d0afbc4d9ae3b95ff. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:45Z), 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/USSM10211628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10ff1d83066c8e64c6ae400926cd8d52b36c1a902578c90c6d55b7aba968ef9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USSM10211627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4d1e180da72969cbcbf734b9f3b9ec972cf8bf426ed60e716afa2f688956a2. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USSM10301388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fc3297cf53aee4ab490a014911529fd50a92e2e4ab01e8b334d5bd8e6a4b41. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DEU241502691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13442e25862637e036bd8a027f8340069eba1161aefadbc9ea4de7cb4e3b3571. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:18:25Z), 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/DEU241502700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b27abbe6a2bb799fe71580ad24fe2434dc57e33481406880784700890008be9. 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/DEU241502701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79166a4ea43e8231b05f3c0e984feba9735dc1e884b54747ebc7c3cf0811163. 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/DEU241502702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf2a1076cf5f0c7a230802d6c41e6fba02d6b73e3e8d318576c7e789aac31dd. 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/TCAHT2456779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbad58bc81c8fc4dabf11b995162d78ddf8bd6e2d862e294c6d742406eda341. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAHT2456765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72082925c6c477384912aa045d748d8af478ea5144ff273bb8d3a8490af9e8d3. 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/QMDA62124089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe37f727bc073041d8f9f8743ca26d0147ddd48d95151f25c94f9ff53c073d7. 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/USLR50000476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f6de99adaf5f4c46a0a7d629ac5d67f2806ad0bdd1afe82d5ff15256d59c8. 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/USSM19911429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f6de99adaf5f4c46a0a7d629ac5d67f2806ad0bdd1afe82d5ff15256d59c8. 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/USSM19911429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27956967bc1c4fa715f15f6db76c5f76e4bc5b86ab2b23ea1e245836b8c3de48. 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/USA2P2146826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6f76b6dcbfabe34adb97279cac6ae453ddb52646f08d7905b4514cb8faa92d. 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/QMFME2366311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6f76b6dcbfabe34adb97279cac6ae453ddb52646f08d7905b4514cb8faa92d. 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/QMFME2366311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f6de99adaf5f4c46a0a7d629ac5d67f2806ad0bdd1afe82d5ff15256d59c8. 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/USSM19911429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f6de99adaf5f4c46a0a7d629ac5d67f2806ad0bdd1afe82d5ff15256d59c8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USSM19911429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f6de99adaf5f4c46a0a7d629ac5d67f2806ad0bdd1afe82d5ff15256d59c8. 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/USSM19911429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d06e5c12045aaed5d555740bad57a97bfbc9e8b53eb3e9169561bbb8ea9b511. 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/USSM19911593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d06e5c12045aaed5d555740bad57a97bfbc9e8b53eb3e9169561bbb8ea9b511. 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/USSM19911593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d06e5c12045aaed5d555740bad57a97bfbc9e8b53eb3e9169561bbb8ea9b511. 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/USSM19911593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b6740bf8eb38f40898b0ff2a9cfa2613755543a5ab6ff36e9a8b20b3179e3d. 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/QM7281456051.
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