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 0xc8bfba9c853526c16a0b2f7f041f2b714c0113968e43cdac1134e8ad9689d2b5. 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/2144ec46-7fe7-40f9-8e05-551ab9860482.json and https://artists.proofprofile.net/proofs/artist/2144ec46-7fe7-40f9-8e05-551ab9860482.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 0x4e890c95bc2a7a1cfe1e58a2a718710acbac5e24ab726ed2d7ee0699aa68d214. 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/JPB602302206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21edcbdfc05458d39134e59567499ac2491339e77cecb9883437e457c5e10b64. 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/JPB602302076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7587e389185986faa93c628bdef40df365cdfc411534d30736658308ffaf2868. 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/JPB602202215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf022282f3c3c098a74e98135060f08dd5af2f28545c1b5ac53d58858120d9b59. 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/JPB602308646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ee7e4ee82bbecf360f4f2f484fd237adb097a8e8199b55c68f018b66ac2052. 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/JPB602202681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f0d942832e60fbfaaf55555b826105f382533c7020f755441a17377973e2b7. 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/JPB602500648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1f9cf70417e4bf9f085e7d0a3b7b549b7b58b3ceb207b6f1a2958de59541af. 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/JPB602500751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9591bca20a1f9effbe7251536cfd68b9ec2587da01fead298d8b248c86aba47. 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/JPB602403699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aad11af241ecd4edb6426db22142c5fa96a71b4eb4c07fd07ea895280a42700. 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/JPB602402948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365de3f809bb68067af92e16dec3fe55e38d1e58bdf157a88ba516b30c73166d. 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/JPB602402995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303e060fbb66b520e0c9a9eba6c6835908670965f176803f3137056aa4697f39. 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/JPB602402719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d99fcf5619f512700c29990754bdb2629281a35ba57062ca429c8f932d815b. 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/JPB602402105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d9389e9b97b87aeed8a1ad7a3c684157f8f8ffac33867002d720964e4e70ae. 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/JPB602402106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18c0bd268266764861501d90ba26da84311a9ca6f1b913afdc76d155e58871c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPB602402107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc7a2e4b67b20cc82958c06fe3f3d2f2fc449a808a46bd8c879107534ae9210. 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/JPB602400496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a742c89158814bd8d7a610f5d286ca78a3a9fc7abfdf01dd8de25d80039f84. 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/JPB602304738.
Refrain in the rain (feat. うぐ [ないしょのRemix])
Refrain in the rain - feat. うぐ [ないしょのRemix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2beaddeca6604a271fe741d87c30677b1f2770f69246457470f08668341ecf. 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/JPB602302440.
Innocent Prayer (feat. Tsugumi Nagahara)
Innocent Prayer - feat. Tsugumi Nagahara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263022f19a155b7333ab20a4a153bae53a4f47a8174db3510328a2b26c973e13. 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/JPB602204721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dca8eca8923c13c61981366e9113a508efc9573a375e830ce0fcf7433273951. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPB602204519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f4e7aeaec41b0e42144c28f8a433309cb2793c260024db52d6d62ee611a509. 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/JPB602203137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6403fe67bbfa42e7cf90d84cf1813bc48018ad0f41cb2e1b33ba9e07c578de90. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPB602203139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8b8751eb99bb6aaaae100293eb0ceb01d56b80fcabdf388e7c1c2afba098cd. 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/JPB602202954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c9fa759f4ea504f5576c00707300ce116ca15f307633f9002fa333e4beed52. 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/JPB602201889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e26f8e92713a399dfd18e9ee3c1c63f6d4ad3a523c4e076f12ce25d495dda6. 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/JPB602201951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9964da490c8a040771886350b3266ce829d9b0e7601207279d739a38b9f393d6. 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/JPB602202007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd8e59a2726151bb28a8411989d0860ac7ae783a40765c91b2f6c32092aeee0. 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/JPB602201953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1266ba6d61eb00d683091b1661825d0aa6d392862db1d09a34671990536e9e. 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/JPB602201410.