SunSay (correct pronunciation /sæn'sei/) is a Ukrainian fusion-funk-reggae music band founded in 2007 by Andriy Zaporozhets, a Ukrainian singer-songwriter and front man of the "5'nizza" group. The ban
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 0x3cc8ad23974695f489c49a4bf279b88a478149810b74421571cc8fe5a2479c4f. 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/f1b5aabd-51b5-4dee-b3b9-b343efadb90d.json and https://artists.proofprofile.net/proofs/artist/f1b5aabd-51b5-4dee-b3b9-b343efadb90d.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 0x9ec2df63716a7e2c931c56a8d6d1901ed068e1fbfc6c3618b514a7ade92bccb7. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/RUA1D1711718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d83fe30cb8894c0b6dc8f2d17af56a6b192322a368ba78836b2711da1499a5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCABZ1418317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22431eca2da199afa6af23e887016f68e02a8f42b20ea40e09bf3dfdef76dad. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCABZ1418320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af8eed725ad8b9130551d0f68d83cda42ec646f20df591363d12e5cabafd493. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCABZ1418350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e183604bf25b14fa5775e3526984892ba77670ddb076fceb40d785bfa928c34. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:30:46Z), 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/TCABZ1416995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2755102efe1942fc41647ce4ca47b9e6fc6c98219795d9f65235cab27be207a8. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:58:51Z), 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/TCABZ1417005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf302dd25309bac59bea5e454469d677997e1ab6eae66c3f19fdf8754b007ce89. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UAKK11600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4c5345eac3c5759aee14b324cc5695b0f0046d43edcc6200341796d6db5cd2. 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/RUA1D1615798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2a14a494b60607b4399817f8e6cfcd0a6df8639b6c330029e146330dc82f6a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA1D1615796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e4c5c0059c254be0714162e92090fe67a5bd00964bdeb22e31d48f766119df. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCACI1597297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd374aa9c9e23c45e088d8a85b8c83d334fc2302e1bf846e4103d58ab01f57f88. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAHR2317052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28640763c3d80137c2ab6b699506eb9d3b95e04b17ee72ba3dae2912ba8568da. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIX2464024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bbf01fe59e8e8eb25e2d8691367dd1a92ba80ab76b645a7e5dab2bc93d041b. 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/TCAIX2464053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc592716fbff05647098282e6fc6984a060159a9b3e2528adacbe73ed01f4317f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIX2464087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569a062b0836e18bbe3c4da805dc9b35e1aff0ac8a31a017fba60539db9b38e9. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:04Z), 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/TCAJP2526281.