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 0x5edd63a0b97e4d74dea995a00afeeb4a1fd1fc26a5f0dc36ba182832f1dd6cb7. 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/021108e3-82f9-4fcc-af04-c2357206837e.json and https://artists.proofprofile.net/proofs/artist/021108e3-82f9-4fcc-af04-c2357206837e.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 0x3a6db21914d6e7631fcf90741b07ad9e065e4386300595917d423278cf3143b9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCJPJ1922352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6e672a3712d244c89fa1240f492b51b636f03388e991916d8070cdf7f64d23. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCJPJ1922354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaff2389aed8eb29396d6e4e393cf3a7962b54663119e414cf5721b9969b703a. 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/TCJPJ1922357.
Concept of Reality [feat. Renko] - KO3 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9038f5595f4eed4953ba30e7346685c553af871a795b6e64fac59062050b7b5e. 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/TCJPJ1922363.
Good Time [feat. Mayumi Morinaga] - PINKPONG Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143665210ff3e23fb25e553cb0e362d2541fc594ceb99db25dc53cf469715690. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCJPJ1922366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9d2c3a408d2c17cbcfbf0fa20376073569308c2b0456ef72cbc6e9692aaeb9. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/TCJPJ1922353.
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 0xd11987be90fb2b0bff5b199d7332dc33dc5b12f81a8c722cc4ed2fff7f581d6d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCJPJ1922358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a110ec3940f1716fe2c753962b1400aef7bc50253e06f248bbf95db2f3c800. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCJPJ1922355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4228f64bdd3a08b1935a6a6d95cc38d49806674d203408b8816049bf5ccc3c46. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCJPJ1922356.
KARAMERU NINJA (feat. HiTECH NINJA & KARAMERU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86978a78939b754c2c395c80f4fee474ab9bd03260732bb264081267188f0924. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCJPJ1922359.
Core Signal [feat. Kanata.N] - Aire Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c2db1e936fb2f822d2fac16d6f131e42d848ce5a4a6b12b2b1b7cb9a7f670c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCJPJ1922360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e62023f21fecb65c0f2cb16fe9da14ad3d3fb52b3bf5409efc77313f33096f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCJPJ1922362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64fe68475d5b02cdf2414137a87cef725a066381cb9836fb7544bda8ce7d577. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/TCJPJ1922365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb286ca4bfb1d9e5e2186e3f53d2ac20f7a1aaeb0fefab2fe8827c64a0d76886. 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/TCJPY2353961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb30ee87361568f3279b61ab906c6fb8ef6fc2cdaccfdaa5170c7a975c2b5c3. 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/TCJPR2269040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c1dc67b9a84ad58af907b3edc67afc2f13fd271fa4cf93e1c538be3544377e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCJPK1924085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc94ebcc0e2dd183ad5743b7fff9ce3351cb841f4d24bb849f9e276f53f31d5. 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/TCJPK1924087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c46a4658e76bc9da08701f0d39832ec1f352ec8ce7b5cd02908ae824d0e5bb1. 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/TCJPK1924088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde72f6fdd027235992a0d63c018c2f7db5a0c7b3998f6cd7639b95899997678. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/TCJPK1924089.
Under Mebius [feat. Aitsuki Nakuru] - YUKIYANAGI Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eeb88a0b5c4a15c8674a0f0a534f5251e8baa5a36408fba0a93230a8373bf98. 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/TCJPK1924096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc686b2416d3dda17042d0ae0f11f8750ea09a3cbc4d9fd94c8465918c1da75c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCJPK1924090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22811bb76cec6843ae03a4737d5b0cd40aa1540eab799547e62783833db2a2b0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCJPK1924091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa2018137f7722d17b33d7ca680944fbab12c4e5dcf2d549f7c17e8a5ce3e30. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/TCJPK1924092.
Day by Day [feat. Nicole Curry] - Donk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a0ed36619e942eb6143ec36cfd39c5bbc75cca86676a502ae799030c091199. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/TCJPK1924093.
Touch the Sky [feat. Renko] - tokiwa Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dcb1b0f111c8bc03be79fe37232a1c6c95416fa619438d30d583c6861c88b8. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/TCJPK1924094.
JazzFunktion [feat. mami] - Blacklolita Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f07a13e4f275d2f1a7dfd5124796db34dbad4254bdc6267a5c31a20f817146. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCJPK1924095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213897cc68b651f75a544497ffd59f8fbab3d19084be4f512dba1a3ccc0ce325. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCJPT2200617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9478e9b34cc869407c5a8ae1ab6cae2473484cce64cbe16813c4964d5d95440. 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/TCJPQ2126362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660b8dff9233a4e1b4ee533e051a23e6f4b2e61a97de9a6b1e649c60b269c249. 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/TCJPB2433649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dc95034949f46f017b3ce8e01efdfe0141467dd3af62dd8236e640325aadb0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCJPV2373138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2924c183517fd5c523124d756732319fe265ee9c9ad6ba421f2f7df8e6c43aa5. 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/TCJPT2248865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4415fc019fa06acdae0b336189114556d45ec701d80185e9a6c20d96804a61. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCJPO2112346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3a558de40820ed46e4a68fe924d4c30f3bcf2f2503c9656c9587e7468ee371. 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/JPP561100667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffd82b606f42ee80ad2a29db60b2178d0286d5e3d211f1864a28a776ce630b1. 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/JPS801834634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1452dc2d2516254cd53099b75e2da4d542816950212371c1ec835a0a51e212. 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/JPW561804048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58f22534535d40a9d8e9c7e5b290dbb11c641c4efc75394659d9eddec5f8518. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TCJPO2112344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef96df1977f005b74059d71299c665cbaa282a8a6e6f8778f3b27ec5b22c7da1. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/TCJPK2088091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af94a565ba49436389a296a2cd3d16da6254ae56d8fbd5a03f7ea47b9317020. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TCJPO2112345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41188851e6c39c22b296afd33aa11a7f7dd825f05ef1d7e3bfaa9d8e24c975fa. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TCJPO2112418.