Shelem ( Shělěm), also called Rok or similar, is an Iranian trick-taking card game with four players in two partnerships, bidding and competing against each other. Bidding and trump are declared in ev
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 0x2a92c661df7fad368e2eff9441347715ffa4694b393171696b76604087bfe13e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b8e7057-4fdc-4674-9638-2d065f8aca5d.json and https://artists.proofprofile.net/proofs/artist/3b8e7057-4fdc-4674-9638-2d065f8aca5d.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 0xa35db422b02a73c303cced6dc89bef8abc5394918cf10e8206c6ac4e09c9b76e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:06:27Z), 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/QZK6N2190855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf0fbc5505d80e46bd07fdde6e3beb459aa185254746e6c77c009914272ab79. 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/QZDA72380385.
Find Your Wrappiness (Tudor's Biscuit World Ad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46013d3d105170739239bfa37e9c09d5783b429f8c58aff62a31554e1a124759. 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/QZNWY2432816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46013d3d105170739239bfa37e9c09d5783b429f8c58aff62a31554e1a124759. 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/QZNWY2432816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29139eaea9369ffac5f1f9cb666a09f86f85109e8ea7dd05af3640401141215. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZTBB2556529.