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 0x9e4a6eb601c7351dc30dbbb72b9b8f00e85251896554bd7d313022f8f2cfe7de. 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/eab6bb14-a27c-48d7-9f8c-ef2c3b33f90f.json and https://artists.proofprofile.net/proofs/artist/eab6bb14-a27c-48d7-9f8c-ef2c3b33f90f.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 0x1c1fb4084862931df188c81c5aac70f919353e6b55d5f76704ef6ca85d2a38a3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPE561115329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3512079963e916dd320929cb1f7654332d042c488caf28b925bcf745e6ad8c. 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/JPE561200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b46aa3d5118353163b85de0a324367af13bac4f20b93607e8b57ebf711b2543. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPE561202559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174e89c099f0502662da1ece633f00e21d64332e7c095334462dcfcdca18053c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPE561202956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e18bee11c4bc16ee9630589dfecdb1d26cc545f0c55f7d63df995f81e335dc. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPE561401917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b38ab9f315ab4012ea2ff5f775d6021ebbfb8e2e698bf06d8e977e39854b2f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPC231300962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b9519d3201fa5892887feb0f1cdd7daaa3fe838347e062489172cc5ecd39ef. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:21:53Z), 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/JPU901500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9ebd9733782c22a63c8fcea241f7c53b4075c55c6e8d0bc6745d58aa733162. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPC231300768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e35a7d12ce8fb81d24b61fd1bdfe50fcaedd5cacfd152fb407f8ec0dc620bf. 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/JPC231400514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b2802d0f776ea7a25fd7863c73788b7d5dbd6cc2208632924b13ca80765cd8. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPE561501703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b70143fbdbf139f9c2525f6254811cde90c270603bda0640be7056c0e57c078. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPE561501704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1fb4084862931df188c81c5aac70f919353e6b55d5f76704ef6ca85d2a38a3. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:06:25Z), 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/JPE561115329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08dabb96887676130bb9e0f4c8e10020ae134b5292bfa478926f7d9ccf9d33. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:06:04Z), 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/JPE561114319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b46aa3d5118353163b85de0a324367af13bac4f20b93607e8b57ebf711b2543. 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/JPE561202559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd832ff60415cdad6c10f28a3b33327f8b1f14f6a0f4e5013e0ac65b13a688385. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:48Z), 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/JPE561301282.
Exit Tunes Presents The Best Of Gumi From Megpoid
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325ddbb7816788ed7ded41958ef1fe2e0714cac7872f7cc52b0c7a619937b0d7. 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/JPC231500146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff439f0debfc58ce63dcddd628c3d75004004dfa4b9bd6a14afd59a4627068d5. 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/JPC231200697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae40bf102ae5a890e4c7531e5b59bbf40909026635d760e818f328d41fbb365. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPC231300460.
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 0xbb3bb109dd81e3b4a14d168ce9f4a71251865c42403b1adb5659e4d60e61c7cb. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/JPC231300440.