Helium (from ) is a chemical element; it has symbol He and atomic number 2. It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. Its
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 0x67ff72366035fe79ca1bebec91eb2d1628d8302f3faa5291a2502b619a0fda5d. 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/859e5f5d-06f1-4830-ad71-2349bb34e447.json and https://artists.proofprofile.net/proofs/artist/859e5f5d-06f1-4830-ad71-2349bb34e447.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 0x2e6587fd9080f1ae6de8d106f88416b616d7632014d0a4d42b4792ba8f932a7a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USMTD9512402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0586e6e9bef403e841aa1567a0c9c527baebe7942462f2a211203d520db90c. 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/USMTD9512403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62370b2beedaecc3daa8188e400077270bcbf2b4fa1c2e3fc4e3205839d0996. 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/USMTD9512404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2818209d7fdecc89b5a955244b43362a0478031364503e9aee0efb6f0a1b97. 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/USMTD9512405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8927f941e548fd9b38a325739e85dadf3bec7f3271dc8b45ce3f091eb82c4ad7. 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/USMTD9512406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9f2083043cd3a7dfb34524d061d64c78453985bedd4f9d00a1ad2380c0cc08. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USMTD9512407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40d91e3168b5bc2a2f3330db503ede968893057e46ea46016be2cf1da8d6033. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USMTD9512409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d97b9ada2056673ae5cb1715672ca35b2285376bc831ecd71ddffadaa2ea636. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USMTD9512410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106a242f5e8b823459268fe9595169f9c2cbd765bea496eeae9bca44ab1157f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USMTD9719501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44608b86ba77b551b6ca278a8f07751490dae7ccac4f8a25550fea37b9ed7f30. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USMTD9719502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97716db57acf887336634eab366b3ad19bbf9095b3aebc40a1e3bfd747784f1d. 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/USMTD9719503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92da354ebc2752d5db5cb7f95feb1b52e3a9e2e7c4de86a224bfde409b452b91. 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/USMTD9719504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abc6b033afb78f419c4a6dd51591d05b53161dafd774d4401c510a0f7b19a1c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USMTD9719506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d1e980fab9aa64f1567bc9ffa73f1adb7c730ce400b8027fbcc46d707684c3. 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/USMTD9407803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bef356db0a3edb9633d3c85aaf7a3ea48570fe575363ef12b7a2470ba97829d. 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/USMTD1709385.