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 0xbb1e2715d2bb5eaa2700119521ad602608d8719e913b92bd6faa452e79c7c451. 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/594f5705-3170-4719-b85e-50f9e627af73.json and https://artists.proofprofile.net/proofs/artist/594f5705-3170-4719-b85e-50f9e627af73.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 0x96b9ae3109336df9d9db717543cae850b033220b7d7df8be66ff427d84301370. 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/JPPO00637690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c6ecfcc512dcb970b625f6c9dad4ee63f6874165f1b42d59ec351f07e7f4e6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:32Z), 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/JPPO00637720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627e3d475aba3b3cb5ffe84516da925dd46b2b31f532ea2dabd1626c7b9bc6e0. 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/JPPO00738110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22bd379365f004f3f822f01c8e4b11c4f4d4b596a5ae1abc3d23647379925c1. 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/JPPO00738120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947d793c3214489e89ecd788d29debfd4fa14f1e772fb37babd8e2f66ded95a1. 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/JPPO00738130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c786900ef01acdbb0036ba7cdf367b5d4823f0a276dca6a5594f8b0fed95ad. 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/JPPO00738140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf83f415be53c23c8df851d36bb5746cb0b2de9c612589051b3244fd1d9a0a0. 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/JPPO00738150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19ffb163ec94ee955139940e2226f5da0f35856ed6aa08ea6224d5e3711c0f2. 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/JPPO00738170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b5282b6e09228b6fc5dba849f14411e062c1ff994a37f7014cf473f37c6d77. 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/JPPO00738180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe611dfdf7decf0fb9fe00ed668244588b7b343bb725eb84617d673a075311b98. 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/JPPO00738190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0579b4123579bad827e9811d00827727a05e47784dfdc452d3a51586a4847093. 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/JPPO00738200.
KINDLY FEAT．MARI MIZUNO FROM PARIS MATCH、ANOTHER SIDE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9a48727a55cdf4e67dc0251bae8e8aae71586219525cac80766e2cbfa6cf9e. 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/JPPO00738210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f21fa836f066a3a337d8ea09ea68a305baf480922e0b99c831796874765c64. 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/JPPO01022550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37271dd3a67ee093ac46d8022e475511e28ee2f1ba168a0bde8bbd7d3709e0ce. 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/JPPO01022560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe026c9d92499beb4ac6927205052385af1ae5e4db34c25faa9d71321ae4cdf2. 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/JPPO01022570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bab058c25f9e244fd9ba2d7e36ad17895f80121b308d83457f3fa9f0ac1a90. 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/JPPO01022580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257fc6f743d3fb9c17d09c71d1ca3e782d59f12006667915c2b14573c7dc55ab. 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/JPPO01022590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4c24a59425f1078cef03a5a3f0329136fca5cbc0ef3ba278bbe5803191674e. 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/JPPO01022600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbabc81b2c72bc696a3c7cd743a2b4243c04b5cbc61658e6dfd89e39398d88f0. 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/JPPO01022610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010e162c1944c0e8a5bd16f80586371c573045bd5cf9e0837157b0f8c178b928. 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/JPPO01022630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177d7c5f1416153990fa350f122400a2ea167a7e0eb0c5306cada3815213e655. 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/JPPO01022640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9efb74e413a116e82d3cedf676f6c5455c86dfa981d4dc6787e6bc2c253d29. 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/JPPO01022650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3bd717b6e6461e0cd73bf59e1a61ba71039d904300238627216aa78c195533. 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/JPPO00737360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617fd9b0e911aa82e6dbb6ded651265b8150fa472f84ef5f033c5f9b5160e765. 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/JPPO00737440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce2afca6f67f666dda85567e5eab7edbb1bc5f3c4db81cd820bf5bd6c190858. 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/JPPO00737380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a32e786c7198bf644f14483a93cc981f830ca2398584a93345937a7e28b6abe. 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/JPPO00431040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9436b9ccb187fa31793c2a282ee643b3e06bebbbbfa59c90b4b89101c110e54. 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/JPPO00431070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f13c7e4c9fdc01fce341d61ce1104451bea33154262ccd13a2ad1f5aeb11bb. 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/JPPO00606670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b9ae3109336df9d9db717543cae850b033220b7d7df8be66ff427d84301370. 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/JPPO00637690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7b002ace1651476dccfbc7952b636bc8f53aebffeb8f05b948df0d31cfc9b1. 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/JPPO00637710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22bd379365f004f3f822f01c8e4b11c4f4d4b596a5ae1abc3d23647379925c1. 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/JPPO00738120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19ffb163ec94ee955139940e2226f5da0f35856ed6aa08ea6224d5e3711c0f2. 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/JPPO00738170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9a48727a55cdf4e67dc0251bae8e8aae71586219525cac80766e2cbfa6cf9e. 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/JPPO00738210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe026c9d92499beb4ac6927205052385af1ae5e4db34c25faa9d71321ae4cdf2. 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/JPPO01022570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177d7c5f1416153990fa350f122400a2ea167a7e0eb0c5306cada3815213e655. 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/JPPO01022640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a62db408ea8f5e93cd04782f212842d37852ffc2af4c6a92a99d71ca43e7309. 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/JPG102100840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ae6b47d7699f10bd2ba14209dc8e63dfc018f22512b6d33510623fceb3eeff. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPG102100842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95ebdbd81d23ee20ecc9b52a5c40697c0aec93bcb4721f9a5102920d032f8fb. 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/JPG102100794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aa41410716ca26291f926f66348b32bb400986adc3ee9e2eb9371ee047d65e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPG102100845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e00f744dc14c8bbb8d298da7eb3dd378e001a3bed72094a9069e299ffcff3b4. 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/JPG102100846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84ffaeda8707d4940d6b1693b746aa9e1f4eabaa6befd03a8062851ee67a7e3. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/JPG102100847.