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 0xa8d8371552957935e45cef81eaa4b2ea9fd998c8e36ce306df4b192801724827. 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/208fb963-2281-4b93-9079-4201e29e75bb.json and https://artists.proofprofile.net/proofs/artist/208fb963-2281-4b93-9079-4201e29e75bb.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 0xcd280c75e67b2ad59df800c0563af8a79dc104e1259330ec187b63891b824b64. 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/JPM551000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce59baeb3c95dc9847dc7640437d617fa3f1b57359a9cfbf02b786ef0d128a5. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPM551000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dca050cb07ad8768dd97bb855f28b632c36930a0216278d2f481b1d63c4000. 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/JPJ901118120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d7547ddf397fd7343f7f077bcda511a3d7c73a15267eededd38b32d1b9aa18. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPBV01221403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a71c4679c46814db2889dfb34ec82fdda5b5ac30f24c25791d4ec88a28fd6a2. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:24:38Z), 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/JPH371400619.
CONCRETE JUNGLE feat. LITTLE CHIBI -Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617189342225c6cb1f3775b8822361c092bba22057ed3ee8ceb5b4d8ddca6942. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:36:43Z), 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/TCJPI1840762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758e98f005cbb4510bf9e2d3b08d0c77615e816f9a72fe19e615794d13f8c2a4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCJPW2375060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3258d5d2299154f348608303ba5cb7f35702386a33fd6a5d03f27f05adc2e78b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPF2532324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc075b91942a8aa0c01fb8f4154a0199abb705843a4763fe02fb2334c350f047f. 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/JPPO01217481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65523e1b6fe33395d0df0216dcf4138877a57430ae735e2b0c9e5f720b02c47. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPPO01511654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e42946febdd2551f37c4ecb506b87cf4ed4ce2bba74e709ed9240817acb9a27. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPPO01158176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd86351e38ac7279e6141c4ef5e6800f6ea43fb36c1657624be6461ed7be6827. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPPO01620949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8731b449f78d9c43c9bee61da2cba48e30a148f83b91e7bfd7fd893c3f62df. 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/JPPO01410992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1520f63ebded717b414bd648f91fb98078929cb287089239b52527a56942d0c4. 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/JPPO02403490.
KINKYUJITAI 3 (feat. CHEHON, 775, HAN-KUN, MINMI, JUMBO MAATCH, MIKIDOZAN, APOLLO, EXPRESS, KIRA, KENTY GROSS, HISATOMI, BES, NATURAL WEAPON, RAY & SHINGO NISHINARI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a779a917636d6099b88b455bc66bd129fb2da4c5bd36b5b4b11cb31b06a3989. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCJPU2354447.
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 0x7f4953bf090871781bf6e128c1a1b01ded43ab1b7f74c59e2342ff26d7187db2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPU901501889.