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 0x88f31b87ce21279944814185c3465cd9761e21bd4e523ad7b9881f616acf2861. 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/7d103ab4-d9c0-4e54-bd91-e4098668c5cf.json and https://artists.proofprofile.net/proofs/artist/7d103ab4-d9c0-4e54-bd91-e4098668c5cf.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 0x6bf07bc2c7d3e2844002994caff912a35017cf586090a21c2cb47668b6c2b9e1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPR502207355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf07bc2c7d3e2844002994caff912a35017cf586090a21c2cb47668b6c2b9e1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPR502207355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fa50e51e56c01f479e1cae28dd9784654030606dbeb214e8231aa8404eae8b. 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/JPR502207512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fa50e51e56c01f479e1cae28dd9784654030606dbeb214e8231aa8404eae8b. 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/JPR502207512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6102b0269fe7302d0b1d7c746c751cac39463294bb4a936c5f8593a70cc09166. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:05:28Z), 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/JPR502207532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd584f50822d426ef4d3e6ed18095cbeca32d5fcb28c9c9f8cd467477e6570e92. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPR502207835.
Hakahakai Princess - Extended Hakai Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b52ee4b1289b9608a06fba14718812b7430c1085e8b63201c0170b412b3375c. 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/JPR502207836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd584f50822d426ef4d3e6ed18095cbeca32d5fcb28c9c9f8cd467477e6570e92. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:53Z), 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/JPR502207835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b52ee4b1289b9608a06fba14718812b7430c1085e8b63201c0170b412b3375c. 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/JPR502207836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9acbb5289a59d7bd07e85512ebd07735c37e407a6c910c8aa498d04db0ac002. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPR502300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9acbb5289a59d7bd07e85512ebd07735c37e407a6c910c8aa498d04db0ac002. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/JPR502300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c308c4ddb9edcc42fa5bf254ddfa47701efdbc41f5089b0a3c43bc982388c1c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/JPR502301442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53680985337b1530e657b428a9f9a957a5ae88905adf06a91ebd2d14dccd9cf5. 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/JPR502301702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53680985337b1530e657b428a9f9a957a5ae88905adf06a91ebd2d14dccd9cf5. 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/JPR502301702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be0c7ce29dab32c3eaa72011122c64246a7239ea5f390a469ce3c4896c807df. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPR502304394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2688d20b37346bc7244c30278ef68f79d791bdf0d3d7e021db4d753d5753f0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:51:48Z), 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/JPR502304491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2688d20b37346bc7244c30278ef68f79d791bdf0d3d7e021db4d753d5753f0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:59:26Z), 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/JPR502304491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53edc21080f0dc7bf72eaa36f192839b8f42248d50a59445029d4bd672045d1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPR502306004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53edc21080f0dc7bf72eaa36f192839b8f42248d50a59445029d4bd672045d1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPR502306004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb986f3f0c6954c9d4f3d4d379e1db1896d8ffeec61477bb9ca7c4c8a222656c6. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPR502306081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb986f3f0c6954c9d4f3d4d379e1db1896d8ffeec61477bb9ca7c4c8a222656c6. 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/JPR502306081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded3769dbba13d5054c318f94a0914ca97892d8a6866e88cc98c838b3e372a05. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPR502401325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3c923d4c6e14c9570e14410bd9146a106c510575e67d92f93e4af82d13e2b0. 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/JPR502406445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3c923d4c6e14c9570e14410bd9146a106c510575e67d92f93e4af82d13e2b0. 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/JPR502406445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b6bf9855822691bbe6ced10c886f78322e9aca088e546d1a9cb02e5c38e4f6. 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/JPR502409052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744d2683e4e93fbf4f9e6597faf673027b4f4efa269e29f8a601d1e730ce27fa. 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/JPR502417695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdfd957afc0f062d9739097fd6aee1a91af2f2bdd3dc6ef30c429d48612ed91. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/JPR502512510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd80e49a2451c902c58faeb0b820fc07e0f8769fce6105b401945806df38fe9f. 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/JPR502512509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aaa8bfebabf9a3ab606883ed643e7ae2e86b8db577b3187940b6eb1c984d64. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPR502512996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0d9c2164622d0f05b44b9ecd2ebe7fd222373ca84a3f9d9937cb09da94e576. 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/JPR502401562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa42512a0b9e1f15254e3cd4a0e62c35b95007dde3dc45e035e27d6f8f0dcc87. 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/JPR502401563.
Hakahakai Princess - The Herb Shop Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2039465c45f60a456376b81aa9aee933787e6fe9047ea0ccd915f71d5187fdfa. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:33Z), 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/JPR502401564.