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 0x4f913361abf84f4e58143b5d8a6ff7c87e8af2a879f0b713c6af0bd5eb135373. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba9e9f0d-32ce-4290-8389-627db015391a.json and https://artists.proofprofile.net/proofs/artist/ba9e9f0d-32ce-4290-8389-627db015391a.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 0x07986b6fb21403d045f78a2d172d01adf4737fc41a83eeb1f6fe953ac7e86ca4. 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/JPR502305994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca66a8a5c9c507d1c316c5f4168184684b694ccc8766838872001860bf9d548c. 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/JPR502305995.
KICK&GO feat. HAYASHI AOZORA - PAS TASTA Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045f0212f457fefa001eee13d166fbf21a46652f2570f1638f44a13ec951667b. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/JPR502305996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fc0c8533475fec396a8454ee76d38260aa76996de020366400669c7a782c73. 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/JPR502306001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c6b47f1e0535ea9c626696c725b3c4558f411037bb101cd186a67dac5c7409. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/JPR502306000.
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 0xadb2af86c1a2a5f26b06ac370ff1c2164a185c38bd11069e9eef33de58ec5a82. 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/JP92E2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0945c0993aaa60f1f2bea117700f1177b87e622217d91e8122829206019feb49. 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/JP92E2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc127c845a2c442379b9e69bc658c3bb825a8d4d9056b5325218f40ba7c62b2da. 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/JP92E2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb90787c58d62580f52d9a9c06908cd3a6d2d4c1be428af54711ca57c267ca3. 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/JP92E2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc68dc8123cffa511d3f16c1b38b4cf51cff70bbf5ae817e32efb63096c1c3a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JP92E2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f33ef5b17b23af2fd5b1d02215eef60a7493e41d7f805926620e0cf5004a4c2. 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/JP92E2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6faf5badcadc4115f2df0f3d9987d33e40d973b9019af2dda6928eb55f8c80. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/JP92E2300043.
POCARI FREAKZ - KARUT vs. WAKARAN GIRL Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24efcc1623b72e906de49848945f41de107f1181ef325f2f93ebef57b59d6a0. 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/QM4CD2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52b4376c4a61e0d54d6009ca5cddc6800558c05b9f7076dd5c9054ddefcccf4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4CD1600093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172e4e9fb8630defcad5bdedd4e0b2736d44c8dbf6892967ca10647f8034dd8e. 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/TCABY1420816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76438f83521750dddfb0d418eb274d7d189790bd5340c22dae0e5051c765162. 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/TCABY1420819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd360bffbd94bbda6ab6413cb6f84e9d26701d0e057f9d7ad48fc95a42c5f01f1. 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/TCABY1420822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9eb14eeadf3719dbf5bdfc288da63e99540bc75639c1c87580fafbe85c79ef. 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/TCABY1420824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53f3a120cfe3ec2ffc990543905402e364744d14d5fb1b8d678814de506ba23. 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/TCABY1420836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11474dc16af3ccb4d0627cc93a21963cbb309324be20b1c36892846f9ca77097. 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/TCABY1420838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878e14ea502a642ab201653a910419b8413b0221027d3bbeb71dffdec3b5bc9e. 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/TCABY1420842.
わたしの一番最悪なともだち (オリジナル・サウンドトラック)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8acddf6e8ff5ca4a8a58fa50a12bc7010bce255d15bae75029443d63f6a3283. 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/JPWP02300947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82edbfa0bf2cbd9be8e76a4a2675d940d295cc4cf90aa8a05b792e61073c6fb7. 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/JPWP02300948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16836746a63774603c8926a0ddf1ff415532a25e8adbc5a39d515ecf95b81fd4. 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/JPWP02300945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22667a568a2b32195d6500723682ac8b1992d1002b38b64689da681418f7a799. 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/QM4CD1500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afcc8b26f163d78c2c42e263205fd6e4677d2b320624bd69d39998e057a030d. 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/QM4CD1900004.
Pocari Freakz - Jakazid's Jet Sweat Radio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d8c901069a88a0aa3b4ac9fafcc7bdf08c16bcd95ff1d83b39612bbecce468. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM4CD1900003.