Letters to Cleo is an American alternative rock band originating from Boston, Massachusetts, best known for the 1994 single, "Here & Now", from their full-length debut album, Aurora Gory Alice which t
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 0xfbf9a78523fb653afc79e2137a4e8d61633a75175c66da39dcdabb0d603f4a9b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e558926e-d72e-48d4-839c-622582edf952.json and https://artists.proofprofile.net/proofs/artist/e558926e-d72e-48d4-839c-622582edf952.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 0x7d998dec537da931e3b130213c36d4f81efbac2aee99b33a9168eb8677f738f8. 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/USGI10200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325540b4f098e84772f3ab07859b9cc90e0cf9e7c4ef5ecf8bc508455e940533. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USGI10200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c24ebaf1285d1d896217e8f993e4528cd342bd049220c950ade904cf50212e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USGI10200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaf664afceee48cb674dce869b039e0c5fdeb2922a8fedf75c9e7898b7d9fed. 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/USGI10200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf186b2016aef1a183a1472c69379699c6afed7ee7010d091887d3e98bf12cd7c. 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/USGI10200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7fd538f432045f1793d7b5d762c54eb8f7686834c56941080a5df6f1551dc0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USGI10200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32748157bcb87ef631fa53a5fdffd19bcf83b85a919d7497c2873caf2de18525. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USGI19400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd258700f03c20c058c7118f6009ea4cda71e3d96f7df3e6321b5e0173132e76d. 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/USGI10000150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a04fb93aa60eab2c880053c4737836728f5782b0d5a28e5831927fefac295b. 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/USGI10000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6873e0bd6b415d6df923d00af1a012a73c99455728d0439bb9e49b368e8e53. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USGI10000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc26dc3b7bbed5faf0262b952843856c38639dab5e1090d3aa60a6b2520b9ed. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USGI10000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98133d9e4a61abe42f61b68133c6b979dcb487a799fdb6325e93dd36619dd060. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USGI10000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442c7753a7a1ae9ba50b1a435df4ff5c0bb875fca9856d96be21e86797f1e532. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USGI19700126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0797764d73fffe03f719871cc10b1fe61af99ad3bda098b2ebc45a986086fe6. 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/USGI19700127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae00bb14751e0681524e7b4f8f80ddff98c541d71e3beeef701058715a6970dd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USGI19700125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41a4784a942bc1ec84c9e66492f630eaf810c36c296302f6f0e55401c6d5a84. 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/USGI19700128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc13233104c92ebb753904cab62bcc330dc0bc3ba1d96a67ec4851b4dea5eaf8. 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/USGI19700129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ae38df91899ccee4646d658f0996fa79587acb6b5c1704bdc8481438838adf. 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/USGI19700131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca7e64ca1ca30ec1c3c27cfbf7867bde9d8e7649013edbe46caf9369d66ca48. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USGI19700132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc042867a9fc28cf5b1118a486711b9b7639f4de3ab7921ae7219c935eff154cd. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:38:14Z), 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/USGI19700133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc5d71c0e36499bc5294d048298841c0a646a28523a258a293a2a199df3dc9e. 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/USGI19700134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23d7a718658150093665b446873f8d7620e58d315745bb59d4ce2e473cfe16e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USGI19700135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d555ff3e9a3d7d3af102b13c7c218034f71b12676b4790310fa7dcfff45bbc. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCACF1512945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5876d9c725858c4b62bb5658acb4be8c628b7e208f13b885237f326a6c6380. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCACF1512947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0a00c5dd06727fa07082964563c3bd5eab5d53dc9d735ce909119a8a5124f4. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:57Z), 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/TCACF1512952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcdc122a51cc248a97519deeae81f3644d3f72a2bca1280934fef5fc33eff37. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCACF1512958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4952d86ad23bf2e4691ac2e779bc7f66661e9db878cdf2859e59297b2e223d2. 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/TCACF1512961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c712860115e2e8fcfc29071e276b8abbb0c044059fc10db907c1ce045fed49. 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/TCACF1513061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e95b192fb68cb4346ada6a4c13e585036a79e2f5393728b1fab65a278c5b417. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCACF1513086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27541d6fd2cc3d0f5c830fcfc19f7ce62072236b8d817d6ba4edbcf148cbcb56. 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/TCACF1513088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb393dec58954b4cad6c16d93fdf08f0ae14608a72deb854b3183c035b4ceec8. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:03:31Z), 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/TCACF1513091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0620cbeaf44edf8ea8209f42afba6d3475ae12d9b5be78c949c713b751b127. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:58:49Z), 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/TCACF1513095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f69a7d75625a6ea7685e4981d3ef62486b92d59bab5d8fe48fee7fe7433656. 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/TCACF1513096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f17bc35ca3fec066e18601d14b03eab645fdc3df8a1de5b54693fcfa83a041d. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCACF1513020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4680b32fd941e6882a9ccdaa57970b745e39af9826253f09d5a4a177c8a7b99. 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/TCACS1669628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cabbc1328cb12ea227a77e6003f1e16e84b6ebb462565705dfc1d5d7a394c4. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCACS1669629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73aa40001f4aed4635e15630b745c96f9fef3e8c9efead61d95ca7426004af8f. 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/TCACS1669632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4817961e9ba27358623887f0f254b841f478388e297d9a15a9b24642b1e7d2d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAHN2360910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639be60af59945ac1923b4501fecb5352802c93e32fabd6f9a6f212b1f941b1f. 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/USGI10200006.