Lead () is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal, denser than most common materials. Lead is soft, malleable, and has a relatively low melti
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 0xee1aa5bba72c97b8d6a4fcc6130367395571ac49450f3317df3a37cc22b95fe8. 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/2663f647-6da8-46b8-9f71-08bac4772c6a.json and https://artists.proofprofile.net/proofs/artist/2663f647-6da8-46b8-9f71-08bac4772c6a.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 0xc3bab60f5ec606bea27805b3a3f38acf9f450c3705d0cc191bb8b79711301764. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPPC00201504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fe13d8cbc63894605e9a0d602050127519ce4eaeb0bdd321cc8f3312b5b4b3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPPC00201505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d0558cd9e328916a92713e757d2784a25092a5691870f31529a98dd0f403bb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPPC00300259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa061134dedccf0aeedff99598a6f03a80b582c9572120c738729c1d90de7715d. 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/JPPC00400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4010af3cec0d72379562633a070ddfada8fb5c168ac401eed092d704fdb6cdf5. 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/JPPC00502204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1b8edceefcca53ee71e7b742869efd54191b23441e3e81e110ec5bb20d65f4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:38Z), 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/JPPC00702422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa061134dedccf0aeedff99598a6f03a80b582c9572120c738729c1d90de7715d. 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/JPPC00400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1b8edceefcca53ee71e7b742869efd54191b23441e3e81e110ec5bb20d65f4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPPC00702422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c917cd837c713ee9112b8e5b3502f9b1d2c1099472479f559df884c1c1fdd82. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPPC01800980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbe9614595937c1763d3a1714f40366754d42dbe5432cbbf66cde0b1a0f3b5a. 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/JPPC01800987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88fd7d0f5dc2616cc1f19d84f3e85412a8ac04165b3043441b65eaeba10c312. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPPC01802488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff1a8ce7867a394a5eb0b1e5061f6d5355c48260239c838f2df2658f3c16270. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:26Z), 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/JPPC01901047.
Summer Vacation (Lingering Summer Heat Remix)
Summer Vacation Lingering Summer Heat Remix
Lead Upturn 2023 〜Jack in the Beats〜 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ab6ce315291b8df947935a2d00e53eeb89e257c55798dc4bd3f2e12fdbb290. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/JPPC02410994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4810ba0cb69e62271e03aaa99065e624561e5a662ea7cfd097776c4aee4b3141. 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/JPPC02411957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae64a45a210253cf9a42527e0362d1ea430bc29698baa250788d5b7b7ba296cd. 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/JPPC02411955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa49ec4f831260d2fddf46989cd533def5bae424d610b57055fccdd9ca40bb79. 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/JPPC02411956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4810ba0cb69e62271e03aaa99065e624561e5a662ea7cfd097776c4aee4b3141. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPPC02411957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a2bfe2329d27a2b0dac4291a3112b56e70ed54b9476efdb20dd8a1857f1b74. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPPC02512440.