The Penguins were an American doo-wop group from Los Angeles, California, that were active during the 1950s and early 1960s. They are known for their 1954 hit song, "Earth Angel", which was one of the
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 0xb22c87de86655d8a45bfe3677167e4444490433a08b50725c8e731c093bb378f. 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/3924b046-40fd-4f71-b411-a1578af772ba.json and https://artists.proofprofile.net/proofs/artist/3924b046-40fd-4f71-b411-a1578af772ba.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 0x723e74413b5c0e6a0b7bb586f1fffee8dc812245a5b2bc5e3adff757b9ac4582. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES14A1102592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ac0bcb7707b389cb6cfceb323cd9014b6a4f236c18cb390f14ce554dc3098a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:36Z), 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/ES14A1404032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7617e1e807c270fa9fe5fdb0ba3c2f02e35bc23fa2493fdfe024f7f44b8f044. 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/ES14A1604782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b55c222b752371945ec075a9d058c370201ecac3b3cfe778d2de65e616a48a0. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ES14A1604792.
Reggae per Xics - Ballant Damunt La Lluna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a1ede5f80173832ea6c4f8706297a62a207b437cccf4ba16bdd8b7f5322c87. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES14A1806132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeb729d3df1fe9f479d2da8230737a908f1f9d4acb226f3bcd2a6ea6d68cf13. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/ES14A1806142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c785ee99c52bc4f42508166ad936944d61b34d2fa7e4ed99a8a5bc5e6d9df0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ES14A1806162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5473378349948071deacd63a9e9b7b1b12649b20144d266cfe9e856366b7cf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES14A1806192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4304b178149b81c6d73e2f2f647ed84aba172ab9485a65fcb36abd786cdb22c6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:20:40Z), 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/ES14A2108252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164eb5e7afe98ed31e16816b4dc3e711c94829c291b6435b5c52fbe5a3375fac. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ES14A2108282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7a28acaba16db9bcbc745859466d09efbd273edaaa9a270f94d4d7347e7627. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES14A2108292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04752ca9f910667b0c04980ae3b6ecdedf8a74feaee4ae5d342cbb0ba4748fae. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES14A2409712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00990bcd35f568a64f8d5afae08aff1380acc175177045ac5a598e44cfa4897. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ES14A2409732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8065a8fc1a767343a4a13f624faa72c37c24d65cfaf4eef49a033e7dc85b084c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ES14A2409742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f468baa06d7699441f924fe848757f105739f873bc8c9cd3e6ceb4eb1afc01. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T03:00:22Z), 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/ES14A2409772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4b23d4296ac493377fcd1f57912a16c99be19ed6bf66e523090f8c9d4105c5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ES14A2409802.