Estrons was a Welsh alternative rock band from Cardiff, Wales. The band's final lineup featured Tali Källström (vocals), Rhodri Daniel (guitar), Steffan Pringle (bass), and Adam Thomas (drums). They
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 0xffd4d627d3c0cc6c5e73257a93563e68a618d00d237cf231dc4a66e5762cab47. 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/cf538c66-b4ff-41dd-a2a6-3bbc7395494b.json and https://artists.proofprofile.net/proofs/artist/cf538c66-b4ff-41dd-a2a6-3bbc7395494b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You Say I'm Too Much, I Say You're Not Enough
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 0xee8ad52b7b270a4b6e79fd56b89ba34f20efe13e8c73a4dbe75d4b4210d2890b. 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/QM4TX1836922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9068097ecd10f4738426e951ca5fabb9a139dca4d063c5b5b9014dafad492d6b. 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/QM6MZ1839350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d03af1cdf425815a3557664328d8331e858b15faa5dba21c044e96d193fdce. 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/GBKPL1519961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3d81103ba2a5d1b1738422072b21dee0758aacae7c0c6bbc88391faf2548a6. 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/QM6MZ1839353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5cfbc092f4de72d4da306a96e564dade1408bbf8c0e4d487f21d50e1ec37ea. 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/QM6MZ1839354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e66b120562830a86931e1f28b2becbc3af4f39ddfc2a6fd7ac4d5785302f1fd. 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/QM6MZ1839355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd691f17ea7d57a1afb4071e5a51bb81a0953302d1cb7a3762506bf018d6e92f6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6MZ1832108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf434a08fe1422acdbe93b7374b0d3e8dbcd28b82ef6506bbd90c2236fc965295. 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/QM6MZ1839357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe56827c4ade1164554296daaa6d9ac61165a81024fd85624a01ae834d1ee9c. 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/GBKPL1666555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6f71a1d7f707e1d9d103ac18fcfd43dad90c32fafc349d3fdc67a35e282c76. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:43Z), 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/QM6MZ1839356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3d81103ba2a5d1b1738422072b21dee0758aacae7c0c6bbc88391faf2548a6. 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/QM6MZ1839353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5cfbc092f4de72d4da306a96e564dade1408bbf8c0e4d487f21d50e1ec37ea. 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/QM6MZ1839354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcc90547fae17bf3faa2eaac190547d9e304257881947e67af64b162ac63cb3. 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/GBKPL1780477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf06bbad52817bb1164be0d015f748a519f231edef46953a7063cb7f8b62c360. 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/GBKPL1785255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c70e21b3f0221a07c363c94fa0b2fd9ba0f17ee315fb228508dc18d4244dd2d. 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/GBKPL1787808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd691f17ea7d57a1afb4071e5a51bb81a0953302d1cb7a3762506bf018d6e92f6. 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/QM6MZ1832108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8ad52b7b270a4b6e79fd56b89ba34f20efe13e8c73a4dbe75d4b4210d2890b. 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/QM4TX1836922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce3c000f8dafa5188b611d4fbbca25a317e7ad9d0e65764b42780869fa28f0a. 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/GBKPL1673030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe6b18189e479acebf2bfcf75a2799fbb35199b1904119a4a8b3e4b88401fcd. 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/GBKPL1672355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead1e6a84d429940f9f04272c5d39e844f443273825b343c330fb93c6c3fc9e7. 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/GBKPL1673029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe56827c4ade1164554296daaa6d9ac61165a81024fd85624a01ae834d1ee9c. 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/GBKPL1666555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d03af1cdf425815a3557664328d8331e858b15faa5dba21c044e96d193fdce. 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/GBKPL1519961.