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 0x8101b47bba2d6fab9466853097fdc5e11b0338b1d615d7a0e87112df7c980ade. 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/f525b6c9-00c2-46d5-9612-18000bd485b1.json and https://artists.proofprofile.net/proofs/artist/f525b6c9-00c2-46d5-9612-18000bd485b1.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 0x7628c0f64f76fd28df2398bbff243c377a234814e71bc18385987c096c58374a. 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/ARG991032040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89db51af2b511c7bb86fe24d1ea50a5aabef2388a843e9e9014ecdf9cbc4f88e. 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/ARG991031325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b5a3de9a3bc6d54b3f57c3469bc2e09ca2a332377b599c739b163c983e8193. 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/ARG991031328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1d934402143ea0a0ad6e901f78390e011d6f92324e1f500146e110c282e27f. 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/ARG991044094.
Ahora Estoy Solo / Olvidame / Lo Intentamos
Ahora estoy solo / Olvidame / Lo intentamos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a16f241d45a9f4e6792f09288f34624e2c47ac6d65de3ace0bb7c27480b5ad7. 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/ARG991041282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf73975cf241d76e8e66d04e601fc9826ad6b13ad34898c5c1834abdafd9b7e4. 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/ARG991040279.
Oh Marilyn / Hoy Mientras / Cariño / Tu Cárcel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa963183f81ab5de87a7e14efd32e6160959660e2051008241807492020a16b03. 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/ARG991039458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fc4afc969729c280d2280308c440635369863304574b6e3faaea87f7998112. 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/ARG991039346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d255ddb1dcfb9272eda29215c54d3195385679627844afd6a157ede73e8286. 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/ARG991039347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21ab7bbf8f17351acf79099b43fa750d72d606b068d509b7e5cf8e94a424f8e. 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/ARG991039348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4a3d9a293aed691f8eb1a5b00802c9426be47b0eed9a35bcc831e19a4eb9c0. 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/ARG991039349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f1af521e65c122c1dabd9a9ebd163297b49267ad7887a81db1cbdd6d4ff3c1. 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/ARG991039350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b42cc30790c6b8d7d74c94a2f6608798697b4b78fd57c45086918858c2985b. 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/ARG991039351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da66abfcf23f970f2ecc19972a766f972a5af4a857f0db526f1138e342e456f. 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/ARG991039063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8930b15ac59e33402e1a5ad0d52948fea52e8387bde0c5d3c95db55ebb9c8cc1. 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/ARG991036589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5c4fbc29be858e9c01122e33c66e7d416f9c3808e898cd7f692283f41ed3b5. 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/ARG991035205.
Todavia Me Amas / La Novelita / Los Infieles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f9b5d98debcad70eb21b61f1111209a4506bf185ef5f56916c0b5a63c92a97. 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/ARG991034423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237d9ad377d92c8866f1385842dbe15fe323fc0e6f6d8079ca0c742b4150e31d. 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/ARG991034403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889fae7b002477872dcb186816236bf7829ba850c37045eae23b23cec8f37c09. 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/ARG991032831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2ad5ef2442e7d87bad3cc75843895658d603892f90bda791f0d5038d34edd0. 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/ARG991032148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3fa2617e5af3ff1649184da88f0cff9b57a437600a4e93f295b757721fc698. 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/ARG991031444.