Union J were an English boy band, consisting of members JJ Hamblett, Jaymi Hensley, George Shelley (until his departure in March 2016) and Josh Cuthbert. Shelley left the group in 2016 and was replac
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 0x9ad5dfab578c5a31fc00edcfc7de847762334f45ed99ad96d5eff08e7e1cc895. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e68b10f-b845-4f4f-a95f-dec082cb919c.json and https://artists.proofprofile.net/proofs/artist/1e68b10f-b845-4f4f-a95f-dec082cb919c.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 0x20b4a2f6febd26925b73182d156becf75a154eeca28a858bab567405aa6a5b49. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/UKG7J1900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc021d058fe97ed4c90882d3d35f75d99b86968fc6702df82d7cc3740629df32. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UKG7J1900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ebf662467f2eb1ade66fd1075337becbae0363fcf97bd3fa78d5b9924134ee. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/UKG7J2200283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b16c0fa46da0b8d0ea93267e81d3ffe5982d68dc549b61a9483fe6e651f3eb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKG7J1900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ac81dca9fc31f1b31c513b2bbeede9389b8f0404933ab63c9708654dadc724. 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/UKG7J1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb070fcc1ce4e4fbcc9946b41f33de87b8c1cabc2621e23ee715fadf4e16cc930. 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/GBHMU1400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdf9529ad439f8c7d6d8037d64de2c83d9b5e7830fef7a8cf3fbabc0c7f684e. 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/GBHMU1400156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc245afa11c436fb6fcf0b55bd0d2e5151cc414583f27a49139514df5ad591e. 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/GBHMU1400297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5e477f04f09c1d60362e92efc9cda30fbe1e3eb0044191164bb45fc70b93ab. 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/GBHMU1400299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36389d6b1e5011121b7c76321a53ee647bd6f0a51876a8e080668ead45217564. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBHMU1400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9814df0381984b7fdd843aad6e38625b7417517bcc3e87986e4ee8cf83b05. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBHMU1400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff19bc18de20900fd4fa4cd1ef590c77d0c17c645e22320705210c7102e6f3e8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBHMU1400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd1157088ee0ea08af188093436523af57223b45be50b581c1de94e986e9708. 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/GBHMU1400300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8527c26eab4244e1502bc230c9ef04c542b5b7dca3323cbb1410745b535470. 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/GBHMU1400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd9341f39328928b7ffb197e9a1e4acd933ac09a9600c0bac009b086ba66944. 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/GBHMU1400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6976d9644dbe84364f95695d3a96d020fa8505878fe46af312bf34f6a10d439c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBHMU1400298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63196fff3e03060e5873c2cccda6d6c996edba84ce6c9941db3d14f85b2f53f8. 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/GBHMU1300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1cf983ac649af47a17d9ad3837c353fb29073857b5b78a1644714fcbd09a02. 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/GBHMU1300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d0d61d007a28cc0657ef3506439f65bafada238f14f6dab1050c5454a8edc9. 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/GBHMU1300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a1af98cc090d835bacc3fa5257b0c9ea397d14631d9617f62e9dc8d90b930f. 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/GBHMU1300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8029c1a053a447909b2f4a65b37257763b5f8978a26ed567c95accbf61982480. 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/GBHMU1300197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fa7ae11f7341c3f036f6d60540745fce4aacfb394f3a71eb37787cd37d4075. 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/GBHMU1300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227773615e3b97d048b3a5ca54b9eb01692be208232e1811c680cd9123646893. 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/GBHMU1300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1a1b42fc26a72feddc3b8c08bd7344f787aa4b3f59381f9867ffea29466a0e. 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/GBHMU1300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dee0161ac17b2e679deacdb5ecbbc7735f3f324f64642ebb17a5ef9011f54b3. 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/GBHMU1300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1004a13cbfcdac23125ebb66558f18d5d5ecad122692c0fef388ee627cb82f2a. 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/GBHMU1300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba94b867993c7d7208e49a2ef6bfaa765a01a10f92e81df2aabdf15081874e60. 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/GBHMU1300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6982b70e4a2c68062980719e84cafce088773e79489216d1860f5bace5d3676. 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/GBHMU1300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cd3fe9b5b71e7e90db1e1d00f4c0707b290140d91e23fef45cf2372f16b7df. 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/GBHMU1200537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcb5bb9b9bc36c2e14c1e81dce3f0ac7b6adda76404368a1767cc7b61e5d6dd. 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/UKG7J2300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6a9942b58feda8efab82ef1d32f9f479620d1c0da55de9d645e443ef14c113. 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/UKG7J2300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc021d058fe97ed4c90882d3d35f75d99b86968fc6702df82d7cc3740629df32. 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/UKG7J1900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ac81dca9fc31f1b31c513b2bbeede9389b8f0404933ab63c9708654dadc724. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKG7J1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd48d428495049a5552a6d7cd1485a2f4711ce5ef5e671f00060414a2f725fd9. 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/UKG7J1900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d0d61d007a28cc0657ef3506439f65bafada238f14f6dab1050c5454a8edc9. 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/GBHMU1300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63196fff3e03060e5873c2cccda6d6c996edba84ce6c9941db3d14f85b2f53f8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBHMU1300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a08b3d1ef326f93674e5bc386921346f1b0ac08f321e11df180eb6d8b041a4. 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/GBHMU1300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedca9208aa377c4e20f29e14382e4806c1d15cb2bb601aacd7049d997be1480a. 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/GBHMU1300068.