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 0x9d9f4d26bd7eee6b086e04ddaf94d6b82b28befa6c211f0b3c22f6ea199967f3. 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/73f2a749-66c0-4a15-9b85-1c1bb2bfefe2.json and https://artists.proofprofile.net/proofs/artist/73f2a749-66c0-4a15-9b85-1c1bb2bfefe2.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 0xd44a0cdcf229d36f8e8acddd301be1fc6ca5202efc637feb0512c96d4660133c. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZHN31963129.
Creo Que Estoy Enamorada de Una Cantante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae14b37b2e37345c1fcf726e1cfdd9e6d720db7d9dc6ffab4c459aab7cbd299f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZDA52024304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a5c15dd8a934fc714ce3bebf52b6b8160c41819269952301c965e07851e3f2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:44:10Z), 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/QZDA62058353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ac179c5b86cba3d803a09269f58294149145fc256c418f4a9adc3eaca5953a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES72023812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284d041b9ddb3b40f9778805eeb59004f965b9ff6736e9d87554919ceb0917b6. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZES92007554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765956d694ed1f2a4c7f1ce376f7e82203905c93af364ddd7eec315dadb53920. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN82035615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b7f196b20d802970787a77026fb4d4f0d6bf00117718dbdf7265709b85df29. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ES7002150201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbe44d91926f6d5a171fb78372e978f8f3c1e27afa36f1c1669b21a127599ad. 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/ES7002256101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94fe69b2dcc5e987af00ac69ccbf596e13698394ca0c7c0f96a8285b9db9f98. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/ES7002362604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810d203f1c13199806657c5d6167c0da97ff158bd54634539aa7800ffc81f34a. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/ES7002362605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2c096397302e8719fd8f942b9352696a680d10387f600f6dff82657ef5f34f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES7002362607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ed6160e6a38c66361ce50fd979eeada172d6cd27ead3e7a8d9af8993679470. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES7002362608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe17a7cfb0879f6c703e1afa8a7bb03e1d2a54134bf1db09083628907a4c3418. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ES7002362609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671c58edb012314a303a380767372a2f113b7259bf5e2a15a32ed5a666276e74. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES3002477101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6007141ad2a0cfb256fe6fe42c567bf3eb15ff9c29fb627028aa30a9ddcf7721. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ES7002578401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684c26e767f30d124d0d5a37604f74d477c6df27c5ddf34d7ccda3e3739b7731. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ES7002477101.