City Boy may refer to: City Boy (band), English rock band in the late 1970s City Boy (album), the debut album from City Boy "City Boy" (song), a song by Norwegian band Donkeyboy City Boy (film), a 1
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 0xf2576440e5a80c3bfa8f14f4df6329b01aa5027825242d6cc6175a866e96be3e. 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/3c6447ba-87c0-4dcc-bf40-83f5eaa121fa.json and https://artists.proofprofile.net/proofs/artist/3c6447ba-87c0-4dcc-bf40-83f5eaa121fa.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 0xe2c6d6b5700870d2204c6e025f5120944f463d53580747db8f0694266b8415a6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V81101088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b03be9149314ab72db8921bf6e42df0fb2909fb036d8fedcbafd39d712ff54. 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/FR6V81101060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ea51a3dd254ecd4dd27b63a3ac1e7ded589149420ffea306f6de3147dd5610. 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/FR6V81101061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60020f1f8b266b8c766b7132cb4c27bc3be33bda715c43aab4a537dd1f35d01d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FR6V81101062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d51150b58b866fdc4542f4910fb40fc2b91b7f1bed88b2ad10adb021c78b332. 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/FR6V81101063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fb827a857568b08783e43d58c99d2ae547ca42bfb94e9077fe24d0c4e29308. 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/FR6V81101081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7d8a072e5d8cbfef88c728dfbb9a49cecf6944c825d2fa19eadbaa37ac1066. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/FR6V81101082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce676ea8d7cf533a5119be2ff770b7af98df8d62b60d8130c05941d9e6ff7d3. 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/FR6V81101084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9b0d7b9fa6734692c1b6f9a23f44dd293a69e20a9891354e2e7f32b46f784f. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/FR6V81101086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396331b242ddfe1246f13316dd524b0c7dc6f8d547a62d977769257b3a8622a4. 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/FR6V81101087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec791bd9d0c2a59c6c261cef5ce542c1a9cd809de2c43c9995e662fdc5ee7ed4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR6V81101070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed3a7589a841e8e1a5b936e27c97ff52d5e673987535c863149a869ca1279bb. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/FR6V81101071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251fe683066cccbb32ffcc2dc04524f9c65c36d7bb9ba966f260e308dfe32a19. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR6V81101073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2ceb1a2c3ea59693609f3e26719a2862a7edb9d5918bf5552d8a4766093868. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR6V81101079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14b90f790762ba78a2e2c5055a9c77ac18ed384a338c99aa275cb7b05a937bd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V80796564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a4b00cd4b60172c6f4f38bfc795f7d6837eae4a866a892b5490a871161131a. 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/GBUM70711899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21aab04b21ba198244d464c7ec727a22c194f2057c0442f74e4b02f293a879b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBF087800640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf457ef8418b3a72dc3fc57928f53d9b1eeeb4cd00899aec9978b09809d54a352. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBBLY1500614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cfac99f5bc4a8de598a740b600bb97a6fd9cb4d42069697c5df0d3d148880b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBBLY1500616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fdc6ec8e872dbb18d3743422cebeaa5e0398d7a9292081b372ed61f6cb6298. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBUM70711894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1698f5362720618e0c41d81d635f594799432c0c089098e694f8165f6957f90e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBUM70711896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84bfd7a58578f77e9720e9005398b5d7c9381a1cb98e05cfb04fd502ddacc35. 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/UKXN22351241.