Loop or LOOP may refer to: Brands and enterprises Loop (mobile), a Bulgarian virtual network operator and co-founder of Loop Live Loop, clothing, a company founded by Carlos Vasquez in the 1990s an
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1e5ef2f73baa4bf38ddedaa94a7e75df89a79145f33ed9efa2d1c09e5af87f. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e9855d7-2ba2-4035-9789-dac952487870.json and https://artists.proofprofile.net/proofs/artist/2e9855d7-2ba2-4035-9789-dac952487870.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b43746077b3bb0992f74d8e392e88c73b040c577fd9c7d527eb49f6294ef582. 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/GBWWJ0800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eafce961c9284ebf91cc1dff42526c62296c0308d5b9ffc4cafa8fbb15e5cb. 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/GBWWJ0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503dd01fd260597bc6cf536ccf328c46f8ace8ef8dac3f959d8fd6a7e5316abd. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBWWJ0800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a6964facedf5bb269b1c20b8347861c5dc229a346cb16808d0af986eee8d48. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBWWJ0800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19726fed9b6e04e57e8e15bf3d4265b0a2c0850fbc142333daca7b604754f22d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBWWJ0800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db3e1c879861a412b1ca5ec5da89652d5dd28e5cb60e3782f499cf3eceb3b23. 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/GBWWJ0800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c54d047d065df7eb3a87e2e62cd2b2ca537032ebe0e7a2aba305f683bb29ff0. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/GBWWJ0800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf9b1ccc92d919c8b5831df38137866b0addf791ae17362848b4c23f5a06d08. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GBAZP9000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb49ede3d5b1c7c03e03859631317afaed97b2f2f60e7825c5496af56feddfd. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBAZP9000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9047a8d67646f704e80b599f9a33fff81a4940c227952eb430d11184ecd29423. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GBAZP9000030.
The World in Your Eyes (2009 Remastered Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4590d922d867a653315ea366980a31507b58cbf4f9402b0b64dfca221b147b5d. 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/GBWWJ0900025.