Saysh is an American footwear company focused on women's sneakers, founded by U.S. Olympic sprinter Allyson Felix and her brother Wes Felix. The company gained international attention when Felix intro
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 0xc031a42aa0d810f8a0a0ee1080aba661c17dce46103c27d410a50e25ce05b62f. 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/d5688464-4c9a-4e2a-9412-2993034a24f1.json and https://artists.proofprofile.net/proofs/artist/d5688464-4c9a-4e2a-9412-2993034a24f1.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 0x77bc0faf8225e7bb04c7388401267e3100b66c4fccf8170333a1e741ef339b09. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWR2378546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47a1eeeb9f8dc6a965a130d71f9f4a9841a04fa9d82cc8a6d2d518d6ca8c888. 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/QZTB72368972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc7d0665d5c8be4fda59262d9099facfb615e445ac410bd3f8d73cd1058f186. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6M2318322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd012871fc90edc5e09797c04d2dfc1f40946e370929e5c36d676d8733d453d8a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTB52238262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a003fce0f04770540148a88f51cc09199a4041f13a4c3ce47c778fded925227. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLR2120721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677ae0b6339f72d1229a33ebbe7be6df566131bb8d74cecea0e094bd8b42b1b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWT2185271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c240bc802ee79448b7cee070f2e528217a388a9de7a47ec1be1706a982be10. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6Q2100950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309b7a26be39bdbb9a3f46e6bbfa183c961dc02d860451fa97bcbb20d0b1aa69. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6Q2100951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe74ff1d271bc238cd4c86e87daeefe9ddb3dc95a94d48d78ad5de7db127f902. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:07:04Z), 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/QZMEN2038653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945eafcc37008b1ad29f2024a3e4db339bf17c85e1ae8d4f318a0b433c48c6b0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEM2009531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c508a6cc38ebceccb6c3c128e2ba0d667617cea2c101e64711217acf160f16a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6M2094118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b0a5be734048165aaa2e086d8767732b2db4ec94b55978d6b4909ca975879a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHNB2088471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8375f083248abfdce466d736eb408d6615656f185d37477170217f4cf4351b17. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHN42024588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d60675eb13415fb25e5bcd639f2f08c1f0bf9a9d6d773fc3e777cb241ba06a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYW2084582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4fe71af7ba5b19cc05024a503d36caec3d389b14b5d9fad4a79c2155a3daa8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFYW2085003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0d7b69f0b1f6be123552dd1c71a68fa0c10c4d5f2bd3b727a27876991965dc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6N1910283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bffcb694c77bed4a2a91aa77e02e6cc050a9a000ecfa36eedc89ce381c9347. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN81914290.