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 0xaa4bd56f434c446996a3cf0c70c3faa01d69c57ec9ca9c0564fcdc5149597867. 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/9a874ae5-731a-42b6-ada3-998087b41a53.json and https://artists.proofprofile.net/proofs/artist/9a874ae5-731a-42b6-ada3-998087b41a53.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 0xe27b9ed99d198931297d0aae355150fbe2f352c84b4e4b9c1d28fe9ae5678cb7. 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/INH102407972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029b7e8f2bb85039743c50879df65a61a0888ba5b1b9980ddcd61e5e71b17675. 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/INH102406391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad7d08b671b9e77a2f89afedf7e4586b0f51e64729f30d696b301b97437c12b. 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/INH102502453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45eef39ed2a967238379df807d4ee14b3ec15b10a87f1f0e797bb1400005da1. 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/INH102501795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb4a714f6f794efb0ae4d7ab2ebe4968701303c4a38c4f9774153776eb033e1. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/INR832504331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad4bb15ec4e420ea4bbd2d9cf118d5fc543a5eb5039631725a70aeedf30a4df. 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/INH102501215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e2a8d03076d15231285c690043a3dbdbf35722ab6525469ea6a7e447aa7b78. 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/INH102501193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214c727ccea08c8047d5fd295db8d701f43f087a4a8c3428bc711ed7939a2c83. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/INR832503573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fc06b736a014825726d64fab3fe687d4b147dce96c5f1375947bf472a622d1. 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/INH102500972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601e85a6e5fb42ced1b2775ad8ddeab1c0c4bdc918cffd063c1606433ee8a774. 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/INH102500954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e43700a9942825ecca954ef80a9aef66ab913e296bad18a4dcef1202b58709. 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/INH102500541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b2625bbfa9dda72101e53d7fa18bcdb79a5616e58691bdd41e8e0469e349ae. 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/INH102500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adef0271d8000c16037c98d781cf4f7d3e25b28579df2a12dd11cc52e5a6fb6. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/INH102415286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de2daf9b8be06c7ad9acf9beba8d6ff5edc15563336b8a54f2c7eb68f4ec5ca. 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/INR832403311.
Azhagana Sathigari (Ambient Jersey Club)
Azhagana Sathigari - Ambient Jersey Club
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980f4456e4cabfd9ff8e6681fb2346aadda5bc2f374719767b90d5c0852eaf36. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/INH102412438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddef2867c6497782cd7def22e722dd786d9f1442ed84db914f09f87184b35fb4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/INH102411574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbdcdffbd3c62495f76172f51ca6da71b767a822065938b2f14a14e04f64798. 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/INH102411294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da6e266c42da6c5eba35add90687ace77da5edd527d1002f9ff9cd05d59143d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/INR832402819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4b31e75d1f8faf5a16979cc998eb578c4f9436dd5bce25968f17a1f1d391f6. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/INH102408556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48216a2e088476f5732bdb2b341aa26dd7a9a007d98d50eeac2a3a940c0c52ba. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/INH102407792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a736510757320b45b222d2c68b2d096b8d692cd230465405848cc8066f0fe4. 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/INH102407158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f920a0f8678d3c04b4dd8e5dd8c01348183946f59b6225bc9a82928c128020. 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/INR832402369.
Kaathellam Poo Manakka (Ambient Piano Mix)
Kaathellam Poo Manakka - Ambient Piano Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63366456ac9a7e6478619383c05c562b803ba59f03b700d131f373f6e7fc6059. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/INH102406341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a7717c261fb3c2668d7c87411ebc0fc772baadc9ab4024a4719fb575b57e34. 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/INH102406276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cfca4e99bf92e42358a789b2b3445a3d42ce0a5c27dd4a31f8a37ea1449a62. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/INR831900908.
Sangathil Paadatha Kavithai - Chillhop Mix
Sangathil Paadatha Kavithai (Chillhop Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f51ca936147dbdb64ff5fc6808d0346f4d60a535d2ab4961cab8a80c4109352. 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/INH102403479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55e540817e54b1740de16bf018310a8915fb38a5f5e6426bd9860e4ae3de331. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/INH102316236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4cb9f7f676c61d5671714558ed4ac7e3c08e1306f23ac39d60003405fd7c2c. 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/INH102316457.