TNS can stand for: Places Tungsten (Cantung) Airport, Tungsten, Northwest Territories, Canada Tao Nan School, a primary school in Singapore , the National Theatre of Strasbourg, France Groups
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 0x7fdfa465a20b1baea4bcf524d926e780045e60bc147d063189b6a397819f72b0. 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/ef40a567-3781-4ec2-af61-141ee18e5294.json and https://artists.proofprofile.net/proofs/artist/ef40a567-3781-4ec2-af61-141ee18e5294.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 0x3937cee70ab33b0e3341aaab13e074a4f7ad584945f8d9984c005aae9c2ecf98. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ZAL919000005.
My Dali (Remix) (feat. Indlovukazi, Scelo & Frdom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a85e2e7280b5a1b9920b09dee9829ead48e04bf83b929107771cb536d9c3cf3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ZAL919000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc807d43b9d28d8773d21d83a6278ae211a85505403014c6253f03b4a4fb7cac8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ZAL919000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85314f7d2da1d2eb904f78172a7ef5e81cb725e8b11c853c6435c6ae24834bba. 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/ZAL919000014.
Zodwa Wabantu (feat. Danger, Luqua, Peela & Zodwa Wabantu)
Kwamashu (feat. Nokwazi Mtshali & Nomcebo Mthethwa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7b2263f28f9df535dada6c8c348bf097fd4fc15db7f4a46f6aabc970b8f8c0. 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/ZAA012000424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32421c097c49fce58e1e6c550d193ab4599b496f3e9971f233de5e2cb84fdd60. 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/ZAA012000441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2cf6cb1ceeebb4c665f431670caf2438af460e3b05123d9385534fcdaf8ddf. 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/ZAA012000448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa8698aa84bd57b3ee467fbd90421793e1584300c15ff804642a9e9294ef924. 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/ZAL9S1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04129a4ec4722ca53c1f3cc950332866640f3f26aa66579a1ba65d0213d7b4b. 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/ZAA012000342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65871e257a82a58f02ad5928927aedc60662c2450f1a1e0a1a6320da9b22fc9c. 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/ZAA012000451.
Summer Banger (feat. De Mthuda & Sino Msolo & MalumNator & Mpumi & Da Muziqal Chef & Skillz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813e2f4bc5e55cb2540d932ae7535f7e66332d5d7091b6baf995452e5e3fcbea. 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/ZAL919000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c9e024303540435cc88908d71d562fd8eb02667604101bdc331abe495465e6. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ZAJ6Q2100035.