FUBU (, ) is an American hip hop apparel company. FUBU stands for "For Us, By Us" and was created when the founders were brainstorming for a catchy four-letter word following other big brands such as
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 0xf6dad03d71f9424ac21244cd0f8e5f91c076d373620bfc9096cf453b24f882c7. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8980837-9bad-4d3e-be03-6a49d88c2cdd.json and https://artists.proofprofile.net/proofs/artist/c8980837-9bad-4d3e-be03-6a49d88c2cdd.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 0x26865a7627340ba198892b15660d4a86c57035734fa853434c8e72a30dbc5adf. 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/DEQ021911540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db2c402324b5a9486523efd52feacfe45f91cf295aa8da2adf23da9f3b6446a. 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/DEQ021911543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5734414f00b5ffae64b90c194fac2b147e926dd3a9d513cb647b269559ad7c83. 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/DEQ021911545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d979a1c81f5bce5df195a5d66b8d83a792702da61c5eeac72ac1a1d7877e0e. 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/DEQ021911546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bafb9f3292b56c39d4a8f1e62bde3a6b4250487f14d1cd4861d5c7d8400bdd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEQ021911547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7451a15e37203ac0098de8f4d34456b588dc02c45e1f17eabd1737c74a3f7f6d. 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/DEQ021911549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a47632712fa5c1c5b4f5957ab72ce1c1d20c948f9a88261b25725118b7c8ff. 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/DEQ021911550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39deeac929d31d67fa99e2abd964ae9e163179fcf455d6f902db1f23c6b24c22. 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/DEQ021911553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471e30c29beb517cc9bc394041a08872740e6510aeca73b40698e7efb18321df. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEQ021911538.
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 0xaee3b3dd74a3bc47d3ed431cafc5bade28bf016d9e418982d1370a51146af55a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEQ021911539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2d9f10a2926e5aaf0c5cd88d29858ef5c19831041177845d87aa6d02f024c0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEQ021911541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d6eedeb57742f27884e1ea31ca8280caf5d702c4e2977cc5dea1b37397fc0. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/DEQ021911544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ed7e18dae1ccc1c8783563bdb4dbf3de2fcfb62994888a2097151b5b2529b2. 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/DEQ021911548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dae822611dff81d511a506b39bdda8250644f9a65f33850626621606d7b3f56. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEQ021911563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b806617c00559c2f7430593d79f7422f869470cde36e58cf77bf59459ede6c. 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/GBLPF6667250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3fb5e4ce77f9ca23d278491b0ce24b27667af32aa6b0534b5dbc0631301677. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQ022110857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96548ccddcc2e4685d7bf1ea6cfe4ac1550c318b92617565936fb2098b0f4074. 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/DEQ022110858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11461d07835c015511223a56731c19c72be2825c8bc44966af08a89b3e924b02. 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/DEQ022110864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf457fa0f4ede2c66805296f28fcc057a3dc7f8764bd45e7f2491e18eb713946d. 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/DEQ022110866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca483a5972cbc7cd731aaf40f3fa45d0f221b4ac08a0b88bc8669bb89a8de40. 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/DEQ022110855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9bd0451f8b12c03e502a08ca93d8991daf5916f3b6eea9de3cbc2dac42dd6b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEQ022110856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819d42dc718a72f087eda496d905cb019d1a47a6ab5943ecd87dcb69e2f8076e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEQ022110859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a48a1f48820e98875adb20a168c06d2ab5d7d55b9fa3f72a26781d159397a9. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEQ022110860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a18c2cdf8ad93abdc2bb117ff704c2dbb65f1ab59006b3baf4c830c1b8fdc98. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEQ022110861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80f592405584c8b7bc876b068ed3f1cad1e4e17a88af07c94b36f61b0505ffa. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEQ022110862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792c854d614bb06d380fe079fe4559d3637195521ddefc194bbf1060a394524e. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DEQ022110863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433eb3544c8e1a304ebcd9f2cbaf159c4c5a0b55b3842c35542942537d8207bf. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEQ022110865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5bddcbd8d6622eebc579f230b7c9c2ae50f41fa6dbe82c429335584244ab3d. 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/DEPI81901690.