Looper may refer to: Animals Cabbage looper (Trichoplusia ni), a member of the moth family Noctuidae Inchworm, of the insect order Lepidoptera, the moths and butterflies People Looper (surname),
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 0x7fb42f6eaf670d1ac0bd57a906790601066fc778102b471fd9afffa1378be8f2. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c590488-6c23-425c-b19a-c1c74c808653.json and https://artists.proofprofile.net/proofs/artist/3c590488-6c23-425c-b19a-c1c74c808653.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 0xfe1b9d1c16b30bb00f7844f5443d5a99dff802ca82d9900c99d92a6248dbebf9. 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/QZTB52331297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6390f119be92a8b5447416c151ab088bec460dd7af9f3b152a4a021fabff22. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:18Z), 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/QZES72401278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9ec7c0718c3cb47f49d9f5c0888c0dc154d1fbd4b5b26c35bbec648e0f098e. 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/QZES72449560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf556909ed2170134f2d2e7d5343f04a43c1b85fd86330207ea15a84af878ff5a. 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/QZES72458706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bacc21d5c13f0048df55a8e5daa7bfe511cea0fa992b6a731156d832ba92c85. 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/QZES92497745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeb3a28b3a62a3af1c6f17567983ad1ec25867bda4310659f3c1b326ea7a4bd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:23Z), 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/QZES92499123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85a4287ff4150f61b7d28d9629c4237aba1120f33ac4fa83afa61b78e454782. 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/QZHN52494445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628ce6955b90ce9330187e63caf54139538a47e49e250b638b66f785d9cb93c5. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:11:18Z), 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/QZK6M2420524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157ae15084bbfcf56db6688e1957f9a6378899d498c1db9e77f594612edb6ad8. 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/QZK6M2421167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59a5674db8d513247962372b88218c35a23dfdae2d0dc3ba167989154c2dd2d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZK6M2421632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf535c84b7e0431e697175731b013365c0abe01d6062aeb90db1f920af6cb28a5. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZK6M2422027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41357924aa40eb9c883ed99a1f69adfcff47971bb770ee6cdf9e32458dbcd30. 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/QZK6M2422178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d515afd1d7ccfae2675f521d538af5818360743cbbb46f832eebb90a828c5e. 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/QZES92499126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bea602bba1a44a9a89c5883ba8ccbd5d23d5e90a6c9e3f1e10ac049130a3fd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:34:30Z), 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/QZTB72432960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559fe09916626f01691c7d662408ca039a779236e9258b36630ba325cd44c47a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:29:44Z), 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/QZTB72433596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88a15c024bddb6801a0f8fa8791d21937d91930842820523b4cd2bb6b5e393d. 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/QZTB72433599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7516d7a1ba4918bdf9b08a49b43cecba9fd1eb67155bc049dc501b4a69ae564. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZTB72433600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78ec9e475805b02a93053f29cefc698a7f2518fad8d186358a207d1ceab4187. 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/QZTB72433601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac28cdb995943995c272427b3c1267427db1df72adc5e4df3756963045538aa5. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:06:54Z), 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/QZNWV2499731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711ba8fd379763986c5de503bd176b5d2dc18afeb0464d0fd747af402c3d7985. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:27Z), 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/QZTB72433604.