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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdfa465a20b1baea4bcf524d926e780045e60bc147d063189b6a397819f72b0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). 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
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 958430 (2026-07-17T15:33:28Z), 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/ZAL919000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc807d43b9d28d8773d21d83a6278ae211a85505403014c6253f03b4a4fb7cac8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/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 0x5dacefe0cafa08864f13bfbe55455cc66af9707671ae7d80b5e775291126d8a6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAA012000423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cf7082f81191bc90de162a14272bdb4ccce3f6a488011c59f093edd605d25d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAA012000437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a37725f1c3d7b3a2e18975ceb564dbb58292619f08453f9f16faa60ff2f32c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAA012000438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7b2263f28f9df535dada6c8c348bf097fd4fc15db7f4a46f6aabc970b8f8c0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 0x962aca5ae0ce942af66d306c5ca60a48c4b5c4dd8cb25e3c13a27c30d9e2c5f9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAA012000425.
Grigamba Prayer (feat. Nokwazi & DR Thulz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72d74b7122d7cfa122b4da472f94a1d0482476a7680212d9b27f58c16693537. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAA012000426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6634905880c5e2abdd0415f7c16244a0a55c4d0a178d7f5ada485e70f4eea6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAA012000440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32421c097c49fce58e1e6c550d193ab4599b496f3e9971f233de5e2cb84fdd60. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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.
Ezase Durban (feat. Professor, Mampintsha, Danger & Bhar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b3191d0687c156d5af3f0dc6c8e587fb684ef0bd198eec84a1594fc6fe9e2d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAA012000429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15519b4b2eef2dba0793a0218a7f18d628227b45732083fc1140aab1c2af1393. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAA012000431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ed8ea722751e4dc86ab02ca43a7550f8e2b499360e79a009f7dca06371fa4b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAA012000445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a527b329a123e285dffbd9c5a59a286d3935d10b83a611d820c427939f9a3e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAA012000433.
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 956312 (2026-07-02T05:09:12Z), 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 956312 (2026-07-02T05:09:12Z), 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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11f868478e1005fd01367d0110dd96ebb41601506a31eef5d956d89ea4749cb. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ZAA012000422.
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 0x57d900d8dbbe730324cadbec230f327550217e61445b23b7fd5d8233dd6fdfa7. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ZAA012000439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac39eb05d798630cc7156d290833490ae43a2ed3903aae92ae0f1799c45cc7bc. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ZAA012000427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e7c2c7a2b34d5b183c56cd66f71b41b30ed8a80425d5395cfab757a63bb3f6. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ZAA012000428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e937592787a65d7c6d31a2cdfb9660f83811011dbcc0c675700b263d9576e3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ZAA012000442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872eefead0a8391a16e1605e16b97946d1edb931bdec5c1e087a658890668664. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/ZAA012000430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9def3ab78c8d4fc4af10bffecffaa39a7a11694f5700151ecdc5849d9facd1f2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ZAA012000432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf895d2ea8900a240b6fe8764ed64de23f2ccf41c2b756322cc0427e7d3d208f9. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/ZAA012000434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44d5a344e88c467ca4c96f56863aa62f369ce63136d3fcf0a01559316e0fe1c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ZAA012000435.
Summer Banger (feat. De Mthuda & Sino Msolo & MalumNator & Mpumi & Da Muziqal Chef & Skillz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cb09f2b6ae0782e71e86bc7e8c9d32f32d6253e0aa78dd7ca35852a7237fee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAL919000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813e2f4bc5e55cb2540d932ae7535f7e66332d5d7091b6baf995452e5e3fcbea. 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/ZAL919000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaad836ec0dc6ba59666826da298925ce698e9a494fe44a6054f3de50b2c7f1e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAY361900552.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaad836ec0dc6ba59666826da298925ce698e9a494fe44a6054f3de50b2c7f1e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZAY361900552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dae2f3bc2a4f60e116edd538102d4f782cc05f5fd564d3f112e2ed500dbe489. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ZA41S2101986.