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 0xf951fbec173b8b7a666f3f61d2220590b922e65d92f6535849f3d721685874d8. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb9db77a-d1f5-4eb2-b8ed-84a0b1efdf3d.json and https://artists.proofprofile.net/proofs/artist/cb9db77a-d1f5-4eb2-b8ed-84a0b1efdf3d.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 0x3d39ebfa2cf1c098ce39615a674e6bf57cf1ab6e0ccc77a932b78b7d655973fc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZRP42294233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd48b711f154e237ab4f7ff9e1bfce8ed50c48428395ce47ec3bfad30c182d0f. 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/QZZ972343752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d17eba7e92b754d22ba32b3efabe2720fff7fc987586c1a485df00f27dfa3b3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZZ972343753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b16ac6ca745c57d0ce70a8bf998598e110b752008f64bf4f7296a005a8f435. 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/QZZ972343754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eac14107512f172a2b356efea3ebe774acbf300d705ddfec35fa0146966bbaf. 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/SE6XX2203568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b30faceacc4fa8e7ab50cfb691f91bd083b4c450b4388da353e6a31ff256a3. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCADF1796909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0dca08e9192e5b8c0f2da7026eeac7043360021b0265cb76c4b15a295de9c6. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZES82014963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156bda9a42461dc93c37734845d65668d91cbad630bf44cdb2cc350d868a578c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZRP42343416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe038406fd63fc5fef79c6aeddda6e88306ecbde97080ade4d17365502017d255. 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/QZZ972343755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8873005290babcf784b17b1f102af58c41b9298ea67d2ce01e4d3e59fc6dd20b. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZZ972343756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c0e04d3a88e177a5e616eb34cbac4beb8cec451cccc9adf13ed1efa9735180. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZZ972343757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaf45663e79978bda354d5b2176115b5c98a7d98f11862c51852885d2b99fd0. 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/SE6HN2265167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb3dba9ffeb29e17ea920ded6c0dbee9b10a2a0ef16f83f4d3496c281558430. 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/QZZ972343758.
Los Que Luchan (feat. Kincha Rap, Oscio, Sarone El Orate & DJ Vilaz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d521420ac9831b4f63b42feb36aa2c2b78f84e5d3abc4d62c3d8ddaed944ce. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCADJ1724324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebae4745ff50265e3f0f96269e69f06e75240f6307e4a8ffad5b25fa19223282. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCADJ1734041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aba4602cedfdcb909733dabb96cd3fba67395bd6b5fa3cdc3504dbf895e5fbc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCADJ1734051.
Recuerdos De Cuneta (feat. Sponer, Camaleon Landaez & DJ Vilaz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7372fdf546803ac480f25e3f2e294f60a778743564f2c3599da24e72b1c99c0e. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/TCADJ1734054.
Hip Hope (feat. Camaleon Landaez & DJ Vilaz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10811e05380bed740440b6510df4a5ef12a12ed65ab3d351cd69442fc2c6c5e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCADJ1734089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0ceba58ba79030a69dfe6148bbea23251845632b12934131bd8de21b7b1fdb. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZHN72103503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e419ee57b1447425c71e6c43044a2d5f6da8f07e2754277daece563f98181e6. 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/QZHN72103504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ef17b9e0c1e8dc9f114459bc85fbee3a8fa34c6a343dd6d7483f67501bcb49. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZHN72103508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf615a5cc0d0f3735aafd46ed63f1494c498206cf91f347695e19c65dd0ab5f57. 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/QZHN72103509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf7fb7d71037e9c978573987ab6a93daa2340151393c2324bfd893f7e88448d. 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/TCADF1796818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fde073ef357934191c01c4a53267b7ce27dbe39d7931bc1f743eb1ba5a32231. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCADF1796827.
La Ronda Mas Kabrona (feat. El Shaaki (Elixir De Beat))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b6da873dec90edd462a2456237720209628a3d100d3d38bcfe00775ef467a4. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TCADF1796853.
Rap Sin Color Ni Banderas (feat. Dave Bee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2074b33b2d1ef6ff8c43456e9a1f2a0c757f3c6d46c0605aeab5b73735087763. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/TCADF1796886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50803c1421e4114db16223abefe406bb9f8b5b094d41d0bd2641e86e2e5ecbcb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCADF1796896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221e179745d64d36edc0d50fb31631479a08042f31b1a38b292b73262300df4f. 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/TCADF1796921.
Soldado De Sombra (feat. Mancha Terrorista, GranNota, Desero, Bassone & BigBroka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4842d57a26d5ee8e00f114335b8d1b4023986d64d64c97dc16ee68a885c10b1. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/TCADF1796936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ae96575aa4808b10f87db6e81c7a286e5ae2ecf1574fee906649b0c0163b10. 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/USDY42189521.