KZM was an early radio broadcasting station, initially licensed to Preston D. Allen in Oakland, California. It was issued its first license in December 1921, moved to nearby Hayward, California in 192
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 0x7f948907b1f621569370de7bbbf04923ddd142b45d40c5994a3e1ff6e302386d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddf996d3-5190-4156-b553-ee0112d183bb.json and https://artists.proofprofile.net/proofs/artist/ddf996d3-5190-4156-b553-ee0112d183bb.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 0x34dae23251640756928202c6fd762757abdcf3de4ff6373391166fb53f23943e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPY202000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a560408189b4728d0a424394f656451c80071a6a847850238913c09fbb65edc. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPY202000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede100189550ca56f3aba48d51420b9c747e62b04e89898d42f648864c9ac45a. 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/JPY201907476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b082ff544eef107398a3b7835e210845f9ea7b522a46a321f4a7b062a49d4de. 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/JPY202000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3f63371ae25af65b9180d3f9f08d49c7cb3e232a630c98d173e172da0f584f. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPY202000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f350d9061023972a51def8d24187d2b2c1d2ffee395ef5a1a62db82ce90725. 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/JPY202000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa414c01db51c64948aec8f05243e651693123d08c31b9a9bb482bfb2040a5b64. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPY202000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306a6d448f370178a3495de2fb54ce26ec49fab6ad3f46d3e68c32dfa4f7a702. 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/JPY202000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88febe2743d419eed634f6ea96524f9dba8d3b2bb03c8752409221e9014ce96c. 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/JPY202000033.
Give Me Your Something feat. Daichi Yamamoto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d50be63ca894016edc191f8e5ba94f915579fe597c79bfae09ff22f0659e45a. 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/JPY202000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffdff98808efe1b9cbf5521a39799cfbcbc72fe6ea473d346b4980f1b0ceee6. 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/JPY202000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62b1a09a3b8c112502695846d5b3e0b432e2dcaf29069ab20d122d3356b57ca. 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/JPY202000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57c0bf97b7aeca94318a3181f333e525ae0ba795a6ab08705f963d2cc3d362c. 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/JPY202000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879e870cba8e89e308364275084df2165c435d84767f794dd19c5970c1f4e5a2. 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/JPY202000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd8c4b1cb775b7880aeb03a238b4ab567b666b494a154501b63be79d255dc30. 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/JPY202000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216192558185e6cdf63be94db5e21508371bc05aa9f4bc5bb49bd0f833e383c0. 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/JPY202000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2969f905e5785517fef3b6d7428ab4635deec366fb3b0f9ce601af353aa6c3. 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/JPY202000041.
ONE PAN (feat. Vingo, kZm, Benjazzy, Red Eye & Jin Dogg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8462587997cfe1df22b8a37611ebe6119db4342011d889cc0c291b6161ed8a1d. 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/JPWP02400345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6715ec52974061a1e2c49456dc9c94f6e9626f1c37adda16705c7d2e4aa6580f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPS809915826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d768de88c362185647e9c21f2d2d70cc7c2b67270252bfafb96b480a83e092. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPY202300068.