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 0xd6023da471691699fc9429ad721136f763287542565f40fb15de2bab7b1b58a9. 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/836a1e1e-5ec2-4ffd-9ec9-4c566ccd5ded.json and https://artists.proofprofile.net/proofs/artist/836a1e1e-5ec2-4ffd-9ec9-4c566ccd5ded.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 0xc1799c68b91eb2aa35aa047f1c96d38d026503dc47eb67ae2c9c04e1f49f36c6. 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/QZRPB2191241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d96806af848b386e96eea5f34fde79bcebbff1d89b8cf7b8d47917095f6d90. 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/QZRPB2191314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49ce36d9917648d2601e3c8939c578e1d1bc61455a1f21def4f80788795d5b9. 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/QZRPB2191349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe623bb061928c6d567db4feb5865d7974e9c690525adbbd50103baef8bf1b0b3. 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/QZRPB2191355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a61e28a7231e76f5426c488fa763ac96fd9ad85d4efbdee5c3809dcad7754c2. 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/QZRPB2191364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d377a851a82ed3b0fa6adac644148713aaf25d44df92d60e75b8b2bec7a9b6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:10Z), 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/QZRPB2191198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224fe9cd6edba6a4fb351be6952dd591eca27cd20643bdb26566f9d1fe196d0e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JP92Q2200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aeb036a30a489f14adcee25ea86a6e3ce35e67a16bfa41639ed5f1004b80ab6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JP92Q2200709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65746ccf7c3bee2eea13b9ecfc143636d61f26ddaae1835c8a852786820a1d03. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JP92Q2200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45626ee0e4725fb0f3d15c8c32c5ce3d92a9521db90f862b26fc4210cfe9c490. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCJPO2166972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8f8e18a76cc427286925fc5260e1d719e3f736e97d883d6a4eae58684fd1e1. 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/JP92Q2301868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b7cdc96311c15647d4b17fbc69fbd479582251158a38495323dd3758b599b3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JP92Q2301935.
幽世サワーズアラモード (feat. 巡音ルカ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185df261bd6b62d41d7c8531bb73c1f3fc6ee668e48eb46099a80dfda9ff6708. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JP92Q2301937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0462dd71bc4ec23574d5b1b852377ae3835c3ff9e8852c4f9d6f1c8bdd4aea. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:30:26Z), 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/JP92Q2301938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2358c9c6bd3c13b6fed5243b6e183d328b84493386c7ef0c435d23aa18a08fd9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:10Z), 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/JP92Q2301939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf062495ff70f224fd2fd9707811fbb0ec8cc0c48ccccea7bef8e363995b198. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JP92N2336945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf299db2c38d87c0c1a7061aa75b0b8821feb19bdb7c5ddc6dad77dc34b1197. 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/JP92Q2400262.
フラフープハレーション (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa762252ae10404e526daaf109807e2fdca9bdbd900f4b3d3cd354d9f345fe27. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:30:51Z), 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/JP92Q2400287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c676865e5d3f3d8379fb17a28c0fc3ab8fa87d7100a247437b6e8dfbb53c56. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:09Z), 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/JP92Q2401137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa981a1bf816fadd50df3244e0def038fc686fc508b6ca908ab772c38fa4feaa1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JP92Q2501786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9405102435eea5b9b3466778d245f1074fd13c1f4fb2f869d8fbf0fe762e1b1f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JP92Q2501787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3071182f5ce698e6bf91d0ffe1d1c977a7fbbb15fa41fd3415d239023a74ff5d. 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/JP92Q2501788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1f4859a6207415cf6010efcc16dcdb03cbb6a588e3bbbdf2a2e4c5c40f8cf5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:53:35Z), 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/JP92Q2501789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42fc0add667c699b553a8c9532bf39280b9d5f5ce09f71a3f20290426e9d566. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPH2521800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b50e1355593f38d6feee803321b48b0358f346a1dad442fb13c34bb055f6aa. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JP92Q2301457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6147fd766864d069d6b082ccc4323d93d9faca8a483990fedd899d0806a97159. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CAHQJ2138012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618e4d5025bdac8f09beb9d765d551f726ced04a3424e930f1c6c271d5d7fcda. 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/CALVP1904552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1018126cf11efa1eb229b2b8381fe0ce1d565b6e17301668fb36c4f8e3308aa. 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/JPA652306344.
Anniv. (Twinfield Remix) (feat. Hatsune Miku)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bfbcb824ea75f201a986ae7d1fdcad9a41e16beb3ad6c9fdbb8824d5602a58. 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/JP92Q2200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faf28b4d05f420e405ea72593426d5b84cc4087a366808edc8b955723714aeb. 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/JP92E2400858.