Kerchak is a fictional ape character in Edgar Rice Burroughs's original Tarzan novel, Tarzan of the Apes, and in movies and other media based on it. History In the novel Tarzan of the Apes, Kerchak i
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 0x5f846e3411d73c009769cd335cc910bb92f0ac193b95d59a5188ab7b27ae257c. 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/e023cdfb-124e-4260-bfdf-01f1871059d1.json and https://artists.proofprofile.net/proofs/artist/e023cdfb-124e-4260-bfdf-01f1871059d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bois-Colombes (feat. Jolagreen23, MITCH, Kabbsky, Buu & Ydasevic)
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 0x3fd82a731a221252fcc8f3f3ee2249222c966ad915a9839551444e9c03b3b5fe. 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/FR9W12409572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd65ab068fda9f8b2643e19c578c55f41994a629f72194afe15994dfb9bfbed. 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/FR9W12353320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35807dd1fe76e2904e12506da0cbfae615560c4bcc999d9832da2ad8e04b9422. 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/GX53U2426584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382d627499bbc70a99ed9e0e0e6e8773a1b69ff8187296f0899a2b268aedfab8. 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/FR9W12234673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd65ab068fda9f8b2643e19c578c55f41994a629f72194afe15994dfb9bfbed. 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/FR9W12353320.
NO LÈCHE 🚫👅 (feat. Favé, Kerchak & Leto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42bd9a73f845fcaa391db5ce3502dea9043737ea47b2f2b08c62249defc2d35. 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/FR9W12308114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3ee67af5883aa8ff4d2c4b3df2d53848151ed91663452405c4e383858035f5. 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/FR9W12363569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fd2850e7b6e4ba61c34f475ab35120bac32a030816d36b652ae67b3fd13295. 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/FRECK2400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33077a20056d258009a19f857030ecaf04dd31949e79bcc78f245e29f9535694. 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/FR9W12403408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33077a20056d258009a19f857030ecaf04dd31949e79bcc78f245e29f9535694. 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/FR9W12403408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d45607e03bcf21d8fe6fd3b5f109a3f156bccd0b6dbaff6b88022bf24abcae5. 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/FR9W12363206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5896dd279bdf2a8644b15a5e6711d2c93d855c9077039ecc2d5b147ce6e2c5. 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/FR9W12232822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0001e64009db652d9ae535ec454387ee83627882751821686d96576e36f56b. 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/FR9W12361720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470437d8f1dedb6c3d0620443162a3909b7674306840eb15641b2f586935f81e. 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/FR9W12361713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853461952bc80e02ac46c7946ff24999e7887dbc7186a74871be00ecf706d565. 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/FR9W12361714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f93eb7862be7caf9b45b9893c064416f98754b55cf42aa9c1b7ea4294ae363e. 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/FR9W12361706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41485de62efa5ef1a1c76d1de6b003783befdb58fac9290553a702136eb3e0c6. 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/FR9W12361721.