HALCA (Highly Advanced Laboratory for Communications and Astronomy), also known for its project name VSOP (VLBI Space Observatory Programme), the code name MUSES-B (for the second of the Mu Space Engi
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 0xb36bf17bacbd65042eedd2aaca304a13d7aa589edfcec88533514b0cd04250b8. 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/ffe2bd63-4971-4d13-b5c7-cb001f1392ef.json and https://artists.proofprofile.net/proofs/artist/ffe2bd63-4971-4d13-b5c7-cb001f1392ef.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 0x107c2d6c311f07372dcc05000593c62874bb0e2dc2ef4bcfd4109e504e10d5c4. 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/JPU901801059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214aff741ceaea245e94f99c4829188a57181dc527724e85a04706a1f4246668. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPU901801061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13cbcf3e8a15e65f8c27a19f4c27d46366914589142f74cb7902a01a5a00305. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/JPU901802845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3538a346d4251581bbcbb98622089d4bfa03ac170b493c308b7d4c7079f0383. 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/JPU901804350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f412afd53ae629b0ee0856016ddbb82e41e7631602b325e0ff8f7660a1f2086. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPU901902063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec98d234cee9056fa85200fa65466e0024e89e7764b87e55c6dbfec5c70da5c. 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/JPX401700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc476cd4cc0aec6f0515550aa7e2d60fe7e91357de8d34fcf526bc3571e32efdb. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPU902000678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d2c65893d5a28688dcbca3a1214ea065d208fb6e8f13afaa6b284cd72515f6. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/JPU902001748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3dcc515267988cd98c6505e722ef68f269f54f453e2a061abee65bb602940d. 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/JPU902100552.
キミがいたしるし (James Landino Remix) - SACRA BEATS Singles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a1a3f8445a363f216dc8e2dc1c4faf935eb293a9a1355c130bed84939b8556. 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/JPU902101296.
誰彼スクランブル / あれこれドラスティック (Complete Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c4123cb4cc2b3f8bb6618e9dc9e1370f98e83a049f497b84525d5701128fa3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPU902202022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d25a0a3f34feda44731993e361f3f86b6197dfeae1a0c8096a3e58957f54744. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPU902205300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e14783e02168a380ac49129686f1e0fabb5486534f7894e788381a244eea1d. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPU902205301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f39d62f2f32c455bcc5ffa6fba2cfdb1fe1599868ba8c6394c9f89dd999313. 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/JPU902303040.
halca first tour 2023 “nolca solca culca” Live ＠Spotify O-WEST
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa134541667332597e297f387ff342592416f2703638a29547c10403379c6eb. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPU902400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfe62d4d5d551c7163bb5e021d87cc149a414411f5d858cda5a524cee305896. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/JPU902402673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9540f086c25da5ed34e67834518ebda4fbfd4485e27b0a8f25702a2c5acb88. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/JPU902501433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d806316913223efdc1bae3922d4d6e133ec2736b54a50dff0720e0359b823c. 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/JPU902501434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d2953c3bbcf88b82fd951138bba70b12d41a6a576e49ea1d9ef6477e324729. 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/JPU902403741.