L5 or L-5 may refer to: Entertainment L5 (band), French female pop music group L5 Games, video games developer published by Gravity Interactive Gibson L5, electric guitar "Home on Lagrange (The L
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 0xc279e057250db1d616b2e26bdc90e2757706220e89853a049db1c2eac9469262. 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/9778d0fa-f0ae-4c1c-aeac-bb54039d4440.json and https://artists.proofprofile.net/proofs/artist/9778d0fa-f0ae-4c1c-aeac-bb54039d4440.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 0x2b2c7290f3897726ec19b595ae911ed2d1326520ef41580e66e9ce7bc84e4d16. 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/USLD91754672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69911ed2d23db3b7464f229a2ce3f6241b77ae45086a62206174285c780e27b2. 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/USLD91754678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dec571bd7a1dbcdb3ccb0b3650c2e219d2c7e78e343eda1f33f41ecc50020d. 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/USLD91754685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c00df9c819abf50a9c7f9214b4af52bc2d5128dbccc3d17f1cd5288c080387. 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/USLD91754686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3495da0ff7ba54155977a254c7c0d5c313d9eb5bf036c52d42406eb2b67a944. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLD91752273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe893272df0853d4e54725fc39010e5db519b7bf1ff7d00b044692b48e07c38bc. 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/USLD91752274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c46cbff3a2e80473af2207db1cbbc068889e84a6e72a211cde6dfc83f267ef. 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/USLD91752275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9c72c9ef501474c627bf03aeffe07f8e671c1add103b64a20f5467af32fdac. 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/USLD91752277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa99551541adc620f06016efa6dc707aced604a4c941260279629b3a21208521. 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/USLD91752279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71a8003a16675dfc3b885feaa8926bf0b1493abb4d5811e900877880bd1cd5b. 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/USLD91752280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b07a901329a71e937874d1c1fc418b09c94602f7306dace46af293e45938af1. 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/USLD91752281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba51f232fd618a9d6fd50eb0dc5a29ce36e727f2a1c1a4c88330ac7ef6c9b2d. 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/USLD91752282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bf94fbe68469077e298f466a97cf673961a3b59290efd1d0241efe073e6e7a. 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/USLD91752283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09daaa70d6a92f431aeea2051b62a4b9b10775cbe3b3348a53b60b9316e6fa4b. 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/USLD91752285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f47aafe6fdf0829bb6f5dcffe9c37f53ede6fc282993218d3b9697bdfaccf77. 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/QZTAZ2387485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc100f93bc3b99ebe3902870d0f7f5cf94c48a02936ff7369ec987107ca006f9. 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/QZTAZ2387486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99565b2d287b20941fc2b2d95948e6a249308046c9af42ad2a91ac8344ef4d3. 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/QZTAZ2387487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8818ea7547bf68807ba71f75872f6ca0b20598fb326eb000f59be36693bc51. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTAZ2387488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda3793e8e1729892212f523640bb1674fc3c32e5f4e58ffd465a4521fac18f6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTAZ2387490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9e3248f86b2433d203621adb49b44c3f30c5b43a94331767d14e4f94ca9476. 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/QZPLR2338465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059e9ed87366c752bc0599a139d37f1ca6db878a774128f1889c6f637cf87933. 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/QZPLR2338466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f0fde332c75506fe8459abaf6f8c2b8482d1d442d8b3ec9ec5579bc4268299. 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/QZPLR2338467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97530653dd0cc3144dd379379b80ef3ca56d9f44afc83f5f59702abb7060b2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLR2338468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bc613b968ec20fb09420a07d2f23a0a5befeee0de37ba396180d1b29408128. 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/QZPLR2338469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5dad0317dd43b0cf6cfcab511f674fa7da957bb2ced8549462ebadf2f9ee98. 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/QZPLR2338471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d33f35faf1097891b4fa7104be144f77f227e2204fdd30fa0eebf3ef4c1254e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLR2338473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa65b4b5e050a503214fed8f846b538d4ac89a055818303db11e33b52cf7030. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLR2338474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa394b95a67640aae6d91bf027157c6fe0c4190fc61e395ba63b65514043e5159. 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/QZPLR2338475.
Hop Out Crew (feat. Yung Deuxe & Phew3k)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af1974994af8f67170d0438a42c9ccefa40c47eb661b8ebaac72499a5d40342. 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/CA5KR2417965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe31208044f62b83ad992be3a0e267ace8e9d4943d2a36b28c03d5d0bc70767a. 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/USLD91753959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05885a7086139285da384db871c287b9f3f5736495693ed78e4f13758574065. 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/USLD91753433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3c94e92761bf3dbd6d0c4e12aa109309c664ee20ea2b0d7692d8f5c646f8b4. 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/USLD91753309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505a05a9bf1fe730d23b011e42146122bdefc4c1d057760629fb1b291f2cf29c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLD91753213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a12b0cd6673b6265b009880a4fb8c8b7e32771e066b1897af2ed020e7a903da. 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/QZTB22325003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49caa3ab8e19bc95a8117b4fde3d450e7856c058107a3c299a38aac6cbfc7f3f. 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/QZNWR2309924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ccfedea198beae4b00180f2fc41126f1bd3f37d84338844c8ea526086095c1. 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/QZNWQ2361734.