An oxymoron (plurals: oxymorons and oxymora) is a figure of speech that juxtaposes concepts with opposite meanings within a word or in a phrase that is a self-contradiction. Examples would be "bitters
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 0xdb7efb18997e936e35ae97299aba305318001d9fe4a8db20529b3b4f604493ae. 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/341154df-5f14-4298-a560-90fbe4a587b8.json and https://artists.proofprofile.net/proofs/artist/341154df-5f14-4298-a560-90fbe4a587b8.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 0xb9b83a0b74a9a94a8eb94c0f79d17199345e8d2edeed5deff25953c4597e469d. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DEHC70005702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0c5374728aa8aa497656b7838d53e49cd7b7f44d8689e60d2069e1196a5dd9. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:43:20Z), 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/DEHC70005703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346212996c1bb6b4ab633d2efac1f043f79de1e86a55db0917da95ad0415d04e. 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/DEHC70005708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53126ceb1cc42f032a9ced3e0382bcd734130853ea03ccb920464b2398453ffb. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:57:36Z), 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/DEHC70005711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3d3cbf2981a0e0a886ecedab902681ceac6aabaf77221916165ef21d280f4a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DEHC79705801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0550f4f3b6491f09e1351e230964cf87f3dfa15607ddb032284593ebabb695de. 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/DEHC79705802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f74e899ffeb0a6d31967f558f031bb7fc241f47c2feecea5263eee6c9d5f522. 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/DEHC79705803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21cda2c791db2ee752aaa76c68948b33f8a7c1aab1192489d28878ccafd3e27. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEHC79705806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecbb0edf3fd25726fd39bede92b0b00de4fa837bba564f36e694e7a657b97b3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEHC79705808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad2d7169155d7bcb03e5a5e4a5013bcf680a5d098edb18d31adb8e4a4625261. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DEHC79908801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df016858e26e36b8d7f95c61e64a2c3f2ba46beea335c8da24122405c855bf7. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:26:24Z), 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/DEHC79908802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fedb32ff39b09e8c18eb20d3f45988abf058fe568b74a105dc86da3c8955563. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEHC79908803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6afcd54b0bc737d012a3e181157b89aaa6996eb6d23db32739903965237e091. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEHC79908804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a485524271014f088f21c90bc5b302ffaf707a2886ca77f70e5019e362e5037. 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/DEHC70012201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc7c432e8f8c0181e35c61fbf2524664e092c10b5d5f5e4b6d451f454dfcb3c. 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/DEHC70012202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36380ee3a76d0729bbb2af91b935dd6ab6070cec232ba12596012e7f601a667. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEHC70012205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d10b8f9afbd3fb6078c10433107e9d3187e822b7bfb0f9a4e590eb1412baea5. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DEHC70012207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed02515101c8d105c7c5edd99f84074c3c0bb9d9201467c53faffb4b3bbcc77. 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/DEHC70012209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c1f32669c1396ac8ababb88cb1a59aac80e6f2f055e396f46a8492b2280210. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEHC70012217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288d81c9941d2cf3216e5934b32ecb0abd6b06f2c0ab82e9631cfb165ad44537. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DEHC70113302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a89e4d6bd2372f34fb8230c5263a51148994d09f5ce5820dbf347d07ebad7e. 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/DEHC70113309.