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 0xf6a333061ecf447e5ae0da577edc50dfbec971f8edd1886f4b29f85ced650f50. 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/00809bfe-3f44-452b-8c84-ee5fe1383880.json and https://artists.proofprofile.net/proofs/artist/00809bfe-3f44-452b-8c84-ee5fe1383880.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Si Me Muero (feat. Farruko, Lary Over, Nengo Flow & Darell)
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 0xf9ba88085863a60236bf6c992c55e3547c4d71263bfe29afb5e2eba2b66d3f5a. 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/USLZJ1784792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a5daf28864f49c43cdae5f972be5b7d1bf9328e8df6f0596befb4b1ea1f66c. 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/QM6MZ1979248.
El Juego (feat. Zion, Farruko, Jon Z & Lary Over)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202380cf6a7ea945e6933db8b3f3e65b21afe6d81524de52cdd0243ec6b6dc77. 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/USSD11800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8d3372385e0832404200882d73600c9ee7af1817a0bb5ee983be4c74fdbf36. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMBZ92039059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9b359e1028c4985648ada1d4bb1268c44f257dc22b510a102bc893e34f7718. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUM71802269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e98364651ce434d91563683fe38c0d51c4feffeb8950e639cebef3faaa01d85. 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/QZ7R41852403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee56246ad88e58ee4d45280e9fda49e424e74ef887406256c5108b039dac3be5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ7R41850395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574b51bd546e2133c0cd521c1a6544a49b8d9891990f2baa6a7c69250ee68741. 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/QZ7R41950254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1fbe7e030a6b8e8cb80777d825f447488e98ec2d3f6e107ef8bf39e4a12feb. 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/USA2P1810174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42db39cc868d00be02cbf7fd5da206e99d18b8d3a3bf6234c87113516cdce349. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2104587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6dfb628f343704176030a744662421cd337447658110024ea025d0a998f10ed. 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/USLZJ1706694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571c2d7d0ec333ee9518b8b0765b3055e6b5ef3207787bd2d5c8421f9b71bd3d. 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/USA2P2114674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80dd77e341803abcabf96f407f1b7292dbc305afedc6d070d3fae3a1735b6ef. 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/QZ7R41951964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971b1e3f3c8087fa47918aa158c3bd5d01e1ed8fd3dffd1d0a90c2dbb1947f59. 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/QZ7R41850630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cb5c91a7f54dcec457e14203fa95db5877fb2b8b6d61d5736d1c91e58d200a. 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/QZ7R41850440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee56246ad88e58ee4d45280e9fda49e424e74ef887406256c5108b039dac3be5. 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/QZ7R41850395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e882cc0023c19e4a8bf22adb9810a13d64413a27ac27c1ff8a39fd6946a4996. 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/QZ7R41751994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00345b5620aab211a9c0069d312d19c39d8427723912d3a91b86024fc30da70d. 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/QM7281941823.