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 0x798308205fb997926f089f7c6db0a0deaa4c40169620bebac7bcb2b5442ce277. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e57525cb-940a-44b5-b5ac-fda6a82b4dd6.json and https://artists.proofprofile.net/proofs/artist/e57525cb-940a-44b5-b5ac-fda6a82b4dd6.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 0x994a1d4337cd2a4b3765ea24954edb497db1c10a9f27892509635a03d42067aa. 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/INF049900210.
Nandri Solla Unaku (From "Marumalarchi")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee44afbdcf5f16ebc5638385c47830499413a9d114d7e9dfc7fba1d4b40ef85. 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/INF049700089.
Yetho Yetho (From "Manam Virumbuthe Unnai")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47009a5be45d827bcbcaabf21bd6f209f732329c670d841b5818c18db1fba0f. 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/INF049900175.
Twinkle Twinkle (From "Ellamae En Pontattithan")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaf0d2c009f4071feb2e1f49a129788b482b30d61323738b4293384da7854be. 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/INF049900163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c3f7b940c2a6767857c3ca6def361c1b5e4e5ecdeb2bcb0cf9282526439102. 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/INF049900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf671ca954ae7b270ae49668d19238c5d3fe3d95cc6093daa4afa817461c4a9bd. 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/INF040000315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1639fbda3cb78bd3c010f0465155c17be0a0a3966b2fb80e693eb73bc4ba0e3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INF049900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973e484b1127c4c922c125f34293d386737bc2b4aac68caa435e04ec017cb61a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/INF049600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35417fdb006a6ce1993ef88e0b952437dacb60eef87dcb9b39b8ad4bb76b866. 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/INF049600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6976fee6a59695bb16f2861e796a6d742bf690f47f3aefe853a4e4c0f1efa12. 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/INF040000313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e828d4816466b661cb6127b0ad15b8f6da96b93c841afb90243753f2ba37c32. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INF049900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc47a4ba65f582a5d058e57661e78dc11ba3997ce30a349e54780780cb669da9. 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/INF049700088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc597b8e4172e31b88ee06722cfe643306468d610b4fad31a99626551df5d8a5. 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/INF049900211.
Nandri Solla Unakku (From "Marumalarchi")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfed4fc97deae1eb06d96dead26115d632043e0642412e1d103c78a0412a3f11. 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/INF049700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa308f486fcdd32cea14cb8a6c50181e168384290c5107ae2e64c7e4df35f2881. 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/INF049900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032ca5f8ddd69aa3436c02e403d5c7c9dc640514d19e22d01e9702f8fcd41e1d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INF049900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf6c129173e3ee9ba918c8b91ff4c37517628d14b9ca83f9f6c7342e2ca46a9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:23:32Z), 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/INF040000312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb4df21a167cb577236901ccee57e3492ca9864ccc95c4e03b862c575a1dcfd. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/INF049900207.
Pannaiyaarum Padminiyum (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6269c03e76ebec5f50f2556e438e254ce87461b4f46301cba59de202655e7877. 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/INS171300627.
Ooru Sanam Thoongidichu (From "Mella Thirandhadhu Kadhavu")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe646cf244b300d5afeb16dea6e24fa668970c7c387da7a9c98fccfd325edb8a9. 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/INK120906024.
Yenge Jen Jeevane (From "Uyarndha Ullam")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be15f3bce90785bf725e63636de686d58f43430bc4b37ea26a5403ce19ae68b. 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/INK122200006.
Pithamagan (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076b723e1836aff2cc53122aa6a7db2c9f9df62e342fb61aa01bfc1834702f35. 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/INF040300551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e3672ac92af0852f1f3fe03cfe23632e42cdcb62964a6667f6a50c85da606f. 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/INH102402767.
Unnai Thaney Thanjam (From "Nallavanukku Nallavan")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadfb6e2632168120192ab3b82e5c4bd69bd36caae8b498b5dbd6c5fec8b2378. 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/INK120904818.
Ratchagan (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c9dfd587cee18d4bfcdb461b79a46addb962c4a17cf9ab4c3805f67b4d450e. 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/IND292211537.
Kadhal Desam (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd44c1cb427a7a923221b026d728973dadcb1b96af4ebd094614120ec393f8b6. 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/IND292211528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce551be478626d13ae1f672903f9856bf68bc964576ea0eacb4a064a86d072f. 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/IND292211529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b2359ba0438e87c75266dea73ccffe90f1a4928ab202f6421b8aa73a4e3a8d. 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/IND292211530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef2cbe88c031bb432ed0c8b9f692294696eb573dd776e60e77ac3c9a074e8a2. 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/IND292211531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2314ac344e40590aa5e0c1d260519eb0743f9cf1025beaeed5b1e337c67687. 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/IND292211532.
Chinna Chinna Mazhai Thuligal (From "En Swasa Katre")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49657c0d5d2c5b3f5931da8129da6c5b370d35429240a093b082db094a488283. 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/IND291822746.
Nallavanukku Nallavan (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadfb6e2632168120192ab3b82e5c4bd69bd36caae8b498b5dbd6c5fec8b2378. 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/INK120904818.
Nila Kayuthu Neram Nalla Neram (From "Sakalakala Vallavan")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45878155de74e4ae6812a2131ba2e4ecca2aeb046066952b3f6309fb6fdf5876. 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/IND292216226.
Aadi Maasa Kaathadikka (From "Paayum Puli")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3063b125118a154248c059a0ac31deb14022207435bf0af7e166cf7674e13b9b. 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/IND292216227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41233453da47f1aa91d01a89dbe61b6a906c27193ef4930ce76c86a3118be15f. 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/IND292211533.
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