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 0xec47d178f4c928fc265a6974e27e4198b9a0d4e6ff21b71e6292d1d0844e2a23. 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/9a8a24e9-38d8-4b99-8162-b9ebe83be656.json and https://artists.proofprofile.net/proofs/artist/9a8a24e9-38d8-4b99-8162-b9ebe83be656.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 0xfaf3fe151fb25ba5906be7218b2a13b5ab0515876879248db505e72e95561742. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/INR271800725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b867293dedbac9714fe5658ec0b5864dadc1460d411c1e3e96f182164e4b89. 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/INR271800727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8683759b94dc19229bb3b753a965ad8a6b080b121530feffbb16740b28f134. 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/INR271800728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e44ea097e81de8a07ea5371d16ea0d290555637986f679aedd6ce1f597c509b. 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/INR271800734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85de83093148ed14d6edfdc4d5cd5c545004e386bc1fc2e7239c44b9e0e4b2f3. 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/INA091213447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce3c280cfa2a7a388b0870157eafe7a0578bb1af7d2750630780cae7762bde8. 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/INA090409895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121881b18ff6b5e3efe0b0e237879630b5be797ff571ecea2a469ffd1cc1802b. 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/INA090409894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3829debe10e21502117601f0a04b82f10e99b249003376c6ed5fd089ca79bbc7. 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/INA090409892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486b9d4f2d53f7e8242590581d8b9dcc7c1ddfc80b6896fc2c08cacf8535da6d. 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/INA090409893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a047da86b853271da4cb4664c8a1662e7b17fb34f34e20c83f4c35d5a1a0ad. 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/INA090409890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17251e0f354678916f84680eae1dc0b72f39d8ed98323c3fd3d1197e390578ce. 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/INUM70701218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6116fd685a0bc6fd54281abe01b2236eb6d7dcff77718d2a4790367fe233e1. 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/USWD10732740.
Karunaada Chakravarthy - Dr.Shivarajkumar Hits - Top 50 Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd617ebc65fb97c66c4e6caeef938df50395d64fb00cd38035f9cf7bf78491f78. 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/INA440200020.
Chorus and Orchestra of the Colon Theatre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db441ca2746f9a5e27cea451f1dbef9cc414e093ac5677da3fefbde0aae624e. 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/USB8U2201508.
Karuppaana Kaiyale X Gundellonaa - Mashup
Karuppaana Kaiyale X Gundellonaa (Mashup)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f74f2fa69b2028bf03e2cd2792a7b8b430dc0a107e0dea26b378e0bfc42662a. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/INH102408423.
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 0xbd585ac8c02b01d2a35dd29e5a1c9e38bf6406c046e3eaf83d7d4f2369b07b2a. 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/GBF071401040.
Put On Your Best Dress - Sonia Pottinger's Ska & Rock Steady 1966-67 (Expanded Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678c0b2880c061352aaa8b20c3634c68228f00d0ee4ba761d47e999546126577. 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/GB5KW1901607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53391930dfa57b99948cb761615d73ee5626190b51bccd84336d74eefe61884a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USB8U2201509.