thumb|Logo used from 2001 to 2017 2428392, Inc. (trading as FYE) is an American music and entertainment retailer, founded in Trumbull, Connecticut in 1993. The company's initialism represents For You
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 0x35a9b7ebec5ce0e89bbb39a7995406a3e75d3123eac12c35a10c4b8a39eb1194. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09e5f143-1372-4907-acd9-18219325a073.json and https://artists.proofprofile.net/proofs/artist/09e5f143-1372-4907-acd9-18219325a073.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 0x735b7750ada3e8ee7f56038f640209850a8731ae98579b771354360fcab4b688. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZ5AB2259608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2485a6e9db677c7078ecc20a88272d707fb6816ae46b6346faf4f8ff9ee670d0. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:13Z), 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/QZHZ52270257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d35ae4c3c76e1b32a863f15fd7117813ce71bee071a842ba14ff8cb133e8047. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZNJY2295112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6558d0b3991103450b3ab7eaca5e28970fb6bfe087ae28438940a23dae08f809. 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/QZ5AB2342466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0170b2ebd9b2bd0f02403a1fe01c0a76d0b6b489bb10c7cc09fa06aed1c13c2. 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/QZ5AB2342467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe789443dc01f63f5c8fec6b51c350966ccbb74a8a46d4e0610207b93b14d9db9. 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/QZ5AB2342468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427cd2e645e2ab3201714c403013bea4148be63148211f78e4b9186eddcaa4e9. 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/QZ5AB2342469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e270933ab5f6f75d9249f01164385a6236b70ad2cb753b5d9ede3cbe64e38a2. 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/QZ5AB2342471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b802b1dbbe005458b7872a405e8cc92c8a836a8b6319c4119aff95eef5d3dc4. 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/QZ5AB2342473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8affb85e699c9b43f2bf7b90d3e7106e8497e868f879f2435bdce763d66ea069. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZ5AB2342474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e60ed0383204e16eefe95d3e20e7ba580c9dafc6c88fadc726936cddcdd38f7. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZ5AB2342477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753191c1df9cce92cca4c85c40cbba55647053f14a1d53537bf1ce70627d322d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:35Z), 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/QZ5AB2342470.
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 0xaacf541d6bbc4170105dd8d4fa9815f56f7b8f7564609e77b17e33c997c9b4aa. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ5AB2342472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1477d53a7bba7d5ec2a9a31a61b3b296c0b1a050e1d96fa1c441b5ee01a7b8e9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ5AB2342475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100b6fe019734765d9e159e0add3ab09fa62d1746deac278ec30af8412c1dd0b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ5AB2342476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581d4c0c271776bbb23f0d94025f5c3c45b3d094ce3fa45bec54f24b0797a9a9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ5AB2342478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cbc9c1002e0d6e132f7854187873dc7f8e835af0d3fbd3d779c6c1111201cc. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZ5AB2342480.
Diamantes, Lágrimas e Rostos para Esquecer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20db241ce091dbed9dcc17c150e5c3c3d7d24aa3e516af2f891601146e3534fe. 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/BXA5K2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e5a702b69f31d288f316947451781e0ee2c994f6d845bc307d0c662fc632ad. 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/BXA5K2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5ee0c88042edde0cd6a5b854508c9271aff7b0e3e8145a2da7fe5c5e2b5df8. 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/BXA5K2500016.