D Billions is a children's music group and YouTube channel based in the Kyrgyz Republic, known for producing content for young audiences. They are also known for their "Clap, Clap, Cha Cha Cha!" video
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 0x5d99d826724e0f07981b4983bcbd3c524d54d3845109d7fd35c8a45283a4e76e. 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/5c84efd2-2a47-4b0c-aaac-0a127a80915f.json and https://artists.proofprofile.net/proofs/artist/5c84efd2-2a47-4b0c-aaac-0a127a80915f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Policeman, Fireman, Doctor and Other Professions
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 0xf54daaddae904efc5a36a6de263ee1e8fbea4e4159259db0d0e06a96d4e51233. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:06:18Z), 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/RUA1H2116507.
Playing Games with Cha-Cha, Chicky and Boom
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008df06989d99cd99a469b4d2a3218d624457b7d8d82e8913916716adf8efcd4. 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/AEA0Q2102690.
Learn Beatbox with Apple's (Boo-Ti-Ka-Ti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464504b7532d7cc6c838ab9e52027aff4f767ee3b17cc1ea6eb67eac776e2a91. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AEA0D2180316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe247fb3c5d59b5a21b5ca496d601a017ed207a8388d5a1303b100d81c75cafbb. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/AEA2M2113062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99889f3b07ce8e337fc67bef9518bfc2fa4a4b29f3d0c344ab33e6206fc7d158. 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/QZNFJ2200791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d635d8d5f1850e714c3acaf732bdb16c6587c463f04057a2c9d3eb9f42459a7. 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/AEA2M2214235.
Learning Shapes with Puppets Triangle, Circle, Square, Rectangle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb8a49b1c21a39a9025ed2e767dc530689e47a5f2da3ccc0081876f119d0dea. 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/AEA2W2267555.
Piggy Pig, Doggy Dog, Froggy Frog & Kitty Cat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00124cb0fa60397ce6ff581b463cf39b6536d8536f306b12547ff00a069ab3f. 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/AEA2W2267556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1c32619bd317cace741f4081e5cbe2cfac5d3978f353c2c1889473c4ffe463. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUA1H2326572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66f6283fe20a94dd2ddf5ce5b2fbe5eeda1602909b9c8712d7c4a61ee5caaad. 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/RUA1H2326574.
I Like It (Baby Cha-Cha, Baby Chicky, Baby Boom-Boom & Baby Lya-Lya)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef7b9fa198aee67d8e535494442671e947f19aee7b8426d1141b5c417546f8f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:27:47Z), 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/RUA1H2326575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00122179a8f0cbb973c598d4c3a191e26a9772ed8285be181674dbbe696870fe. 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/RUA1H2326576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c1fb0ee830edc71af3b3d5dc91e49fbafa2f629df7b8a8a9ae97cb87422c3b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1H2326577.
The Funny Aliens Taka, Choko, Tiki & Loko!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b9b9bc1ee3703cd4a30ae1ef117803a3a102703f67e913b78de1890d623a4f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:45:09Z), 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/RUA1H2326578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b2a4cac1ae553b16a6256779407f82ee98a4503355350ae39ad104dfb97359. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:51:58Z), 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/RUA1H2326579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4daf8a1103fb65651cde51da5074b66ecdb764e882deb99cabc3f17e30ef4c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:01:26Z), 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/RUA1H2326580.
Сha-Cha, Chicky, Boom-Boom & Lya-Lya Get Captured by Hunga-Unga Tribe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b4be37e187a6134e2dbb1f7f156653a9fee59e46b0f7cd2c9df060aeafd7e1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/RUA1H2326581.
Different Animals (Big & Small, Tall & Short)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80530fd8e60b108c37d125d4570909d2d03bc52c851f5dc277fe66d6687d1414. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:07:26Z), 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/RUA1H2326582.
Boom-Boom Thinks That He Is Whistling Like a Bird
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4400d943a651ce0bb64a733a6a0b82c32e00500a7812a1cf61e14bbbb90af209. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:47:11Z), 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/RUA1H2326584.
We Are Bringing Toys, Vitamins, Gifts & Milk for You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1060dc93a3140c53ae61e5b71d965f0c25701c53c419a31efc1d5fa328c89c91. 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/RUA1H2326585.
Transport Puzzle! Plane, Boat, Train & Bus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7b91e6c12ebfc15cf0c2344f8b7363136292828823e42277b6cc6ff842e2ba. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUA1H2326588.
Robot Cha-Cha, Robot Chicky, Robot Boom-Boom and Robot Lya-Lya
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcced46e41b3ea6e7e20e959b4bc7f6ff826a4eb27e53a41be87f1f9e5377a2a. 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/AEA0Q2376403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd423853c36dbd58a195aa18a2f589a98feca6ef90dc26e8015d759776827ecd. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:06Z), 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/RUA1H2435243.
Let's See What's Inside the Surpise Egg!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0fe63e056fa60653920f5ceb7d7125ef5a46dd4705263916b4f31466ee6aad. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/RUAH62406137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87bdc7f1a0f298e5b6e4ad2afde47bd092a2657826174f59ccbbd1a02d0c508. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:04:57Z), 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/RUAH62406138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cc7be36284d61414656f15b41d714e45368da10e967ad8e3d0d5d204072737. 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/RUAH62419473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c16b7671074f9c7ddda0a8a88ca8f673d8bf3ddb49f12eb826aa4823ff7d1b. 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/RUAH62423993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe621d610e3bb3a6e400532446edf5d0fa9e62aa512f7510d4d9c3bde6e42dd2c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:13Z), 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/RUAH62424097.
Christmas Puzzle! Snowman, Tree, Santa & Reindeer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87298362ee95517f1c50f21e8d6456f4c4595856f6221eb711bfeb5ac87c274c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:00:00Z), 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/RUAH62424098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5636df9782551d57299f5fa2e87e202b31c2daa48cfd3312c064308a56328a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:00:55Z), 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/RUAH62424099.
Robot Santa's Christmas Gifts with Mini DB
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1d46d9589a4214b10d379c9aae757d0f55dddef7ee729ff1c542e70b080b66. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:11:20Z), 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/RUAH62424101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2478866d9ccd413d116eccc9bd7250fa1e3d93511e9bb043fff0099404ea7b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUAH62424102.
Knock Knock Knock! Who's There (Christmas Special)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df2da339ec0634e159e3c85d99c645280b67e2741b40b535fca10b3a1523ab3. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:10:04Z), 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/RUAH62424103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716eb322fb205f43cc9b62ff135228fc4c0b19a61194143f72d269731136c455. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/RUAH62428686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1fbbb4666787d460b6aa74f38dabd7cf3d632721d25b758fbcbfb8e5c750b5. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/RUAGT2594276.