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 0x237f3567cc81fa43cdf1cbd70f060ad55591a38346337d6037759f54dad24423. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75cbe322-08d4-4e2f-9778-ef976e3494aa.json and https://artists.proofprofile.net/proofs/artist/75cbe322-08d4-4e2f-9778-ef976e3494aa.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 0xecaecd73155a20c01b4f4d9355cc825f6fb9c056e4a975aae01c95e1b9e2e69a. 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/QM4TW2375323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62de852c3a2b2eef28833e7f2e8623b79640d5f4b56ea973a7377453bc2b0f13. 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/USA2P2253058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf223054f0d2b2149b7aee483b785e573b6f0c4b6584adc9036cb1aeef478f228. 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/USA2P2148883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6842e3b994d0f0d01603ba05f7ce7577935d8c6ce4b1da8da3b646320bbffc2. 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/USA2P2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b458d3aac4cbfc74c862e54776c40955245f4d17cc5f719e2525ce0f4a3ea28. 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/USA2P2262957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a859d0ff229dbf5f5c563217732e92685c829d081ab087925288406501e7a6d. 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/QM4TW2367621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b49e546c21391e6110be2894c503c004b6238779c1ab84a10ca9ebd9d73be4. 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/QM4TW2362121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee26109606f3527d39c3ffa92b8861fdb07d9805a99d9124894d7f6fd671f6ff. 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/ES71G2055768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db081b399d4c160fd7b2c9515ad25dfa4388c32e5ab607a593829f3d6853a16. 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/USA2P2205992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b51405fb1166a032a4f0a0a5cfc803937faaeea9c58649aa24c88360811687. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM4TW2375664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb776918f15afe93528d1223c90da596aee18826b4bf13c96f749893441d815. 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/QM4TW2375684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fc20d615d1f8c0e09f787761661aadd359e3491d6645bb7087f29a58c24069. 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/QM4TW2375703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6754584d665e6a8f60c67650a6ba60c278514b5fda0599d7ad55c2fb1dabcc46. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QM4TW2375736.
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
Música para el programa de Bertín Osborne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb3553f752f5fd79062a299da30fa117e8f7c47cf3c88c773034d5d7a1ed55d. 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/ES71G2047158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96671bd898a7c8934ef81696c42f2faf3df396084133541e26e4fa9e714f60a0. 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/USA2P2150806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205d4937e7e86de62baafc9ec58da8a3501a8c39e7fe2ccadec9a5dac991e944. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USA2P2205902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89359c55068d7845f010ed5f6344c6b3cceb592d98142913c90c2fbd2d54afde. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/USA2P2205503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72da1cf570aa9416689ebbc40044a3ccd925992782b0d557c1372a74f3f68057. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USA2P2205904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2c8d249d5771b084f308d523a542b454e7ed27320ab9c451574c76cf8333a6. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBMJG2004738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5365e21f733e709c2e5f8563a9a6496e475fd9fdd68953d8f2e736bfa2590706. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USA2P2205903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8235817ab5dbd95eae8f894c58e7f0a96ef99be41567efd805ea6e63ef3a9f0. 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/ES71G2108532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16f7b6ecc932eff0983a077b31f65c91a49017bb7d0a9bbca9a9b0543f28083. 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/GBMJG1917508.