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 0x97e79f9a17048ee7a4dd292f7539733f35623f7717266398719e3fea8cdc816b. 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/a45d884f-64eb-4b81-b934-e1721e63bf7f.json and https://artists.proofprofile.net/proofs/artist/a45d884f-64eb-4b81-b934-e1721e63bf7f.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 0xab90f65d9f419f079854388db692ff27d92ea379d1ee3a3a580396d6e5bdfe13. 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/ZZOPM2239696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939cec625ca437766da990aed8160b9bd120fda735bdaced058bdf8878ad83ac. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GBKPL1966085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b942754fc13fc83af17f52430222b9ebe535d235e9b79929ffe7391a76472c. 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/GBKPL1966082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7493df993f6b845eb5c61a6619f14a4d21ae0e3a56fb91f2bdbca3b8a212e79b. 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/QMV9W1500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4cdbee9be0eb2c34427b5e71f4948a9f1496eaf979252449cd289c93131732. 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/QMV9W1500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ab342155cd38cbbe07cf319ff98400c37b8488508657a1ccb2a340596fb30c. 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/QMV9W1500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61482921b8ee36f6fbe2a65913a2e327d905ddd7d35a253e84b5528d9dfd28fa. 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/QMV9W1500104.
Periodico De Ayer (feat. Nengo Flow & Jory)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf564eaaa8d7559c9051b3c43df47a527f2d3a02ee408db1c84ada0c86cd9fbb9. 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/QMV9W1500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28627fab1372594b19cbb1f1082d6d64fa124cddaff8581643fb05f1276fd74b. 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/QMV9W1500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d038c800a9375022a7e0075f0883880b819660d8746f7363b30bf9a278e4921. 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/QMV9W1500107.
El No Estara a Mi Nivel (feat. J Alvarez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914b270a71a39138c1ad6748d83a51dc0d12df50d8423fbe6df0276cc7b6532a. 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/QMV9W1500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874e718bc19524a51421e5130e17a53dbbd74f1567e0f9d771a0d312e08910b4. 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/QMV9W1500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b8edb74f68ac74e57d7f282538c8910dfdc2f2b2a39df1444a2733ab2ec3c8. 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/QMV9W1500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1d96f7073b07c805add3619471f7c37649e375e68b8820192e471b069100a3. 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/QMV9W1500111.
Decisiones (feat. Luigi 21 Plus & Arcangel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc63c866497986fe52c4590457794bb7824c8a1d6249a89816f2ae16f5eb8b1. 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/QMV9W1500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a8b3710a18b9699c2782d1c6861053312c76be9ac82d2de6af509c8475f4b0. 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/QMV9W1500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5abc6605efe3d87652e7184dc7f4bef9e228baa120466ce535021bf4f39a4b8. 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/QMV9W1500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65a49ddb1e33e0b8b8ff98cde49be1a05380b550ca3dae0240d8069d5e7053f. 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/QMV9W1500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ebabde7411fb07ad13918707fe7ae04a97156ce40d2cfbc66b9bc1309f376e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QMV9W1500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff85192f25fe62e204241c792143a72ac927eb5b0fba643b08a86a25c8b7e224. 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/QZQAY2282982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b69f4452d76ff25e239b777fef66836e3bff56c0e108592149417db367e08b2. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZSYP2186382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bf4c3a8e7b82ccee59a5d7dd9ec67a7a98164c0a35b3c4fa166eb9cbc4c09b. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZSYP2117969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ea29bb505f2c42c45f4649e109d93370927808d2a6aba7a509c77b23b70099. 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/QZS7J2111438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2db7e67707444f03d7393f65c9d25e7cbd79275800c5f129c2ae88cf09ca3c5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZS7J2149756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d36f2c0c0866052cba9beaf1adca973a9d2766c69e0bfb652c74a65e586f34. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZS7J2113223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84917a9c42df69466b29e385bee82d29ae2cbcd9821097b9665a141b22d8c37d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZQAY2183432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f0e99379e2a80d92499bc78eda6303895d2794f4b4016c51bbc3531c31ad35. 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/QMGR32043233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1923e4befb2f9091b71420781b8efff59245ababadea2ca25a270f36fee8110. 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/QMGR32002526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a6ed61ea1337df8764b41e76c728b72fce39f34291b49d7c6c634dd4ba3f15. 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/USA2P1947973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bada27658db3dfb420e3ba3322f8fa807466ccf957c911a50124f055d3d1d4. 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/USQY51737117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba17581ab14d18d71a56023bb7aebd52c873608d5ff09d46288b31c54b646a25. 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/TCABP1361731.
Fin De Semana (feat. Baby Rasta & Gringo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28ad53bee6922f616199d6517a46bf36f7a2dc5d705476a88c3fd5cc66c7717. 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/TCABP1361771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ea7f311729e6595b9934881f48b8c60fdec0cc927778446767d3660fec409f. 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/TCABP1361883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5981567cbae43c1d1de085623e129f36a5191c7017015535840478f29f3d7069. 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/BK4DA2305311.