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 0x9c466beda61cdb260054d9de0e6292ba7e18b06149cdc2de64973bfcf021e09d. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5addb361-4af4-4e67-9262-4634fa56043f.json and https://artists.proofprofile.net/proofs/artist/5addb361-4af4-4e67-9262-4634fa56043f.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 0x762d1e30e71b00f60e7384af0d2b839206855e168d22c50cf36f01229f9adb44. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJW2430145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b302bc83dc8dd4723d6ec4e05d6e50b332e8e19c828cfcc0858dcbd574676f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTPX2326136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c9a9159e7df4e631eee042e9f158f4524a339d086260ac095b11c63b541c19. 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/QZN882224943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be0105a57dfbf187a97940a814fe7be91e4249827715f2d22bc0acecacc6e23. 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/QZN882212297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26100637f68ec0d727d92165bdbe97217664c08962049aa4af3e3c72656e6177. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ2J21505703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae10fd668c692e5dfc924e777b0dd3321ad6f0fa362b1604fde08003b59b9e2. 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/QZ2J21505743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ced4503412c6d22fb585c1ec833f737ae5a525fcb5c77c29588f2491c75c2b. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZ2J21505746.
Te Siento ft. Alexxander, Coron3l, Agustín Ramos (Parte 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed10b02084a66a023cf498ad23cdb89e6bea5754d37eadc2b2abc6bd6a69be4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ2J21505747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c5169051d44f201f7a7e7aee0f3e3bec3d7057c2aac949d15913bb7f31190f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ2J21505749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b989349dd3a5e97818386d808c0a979ed6b533e4faf0162bcd2116a340775c. 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/QZ2J21505309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9380b6ad5dd150e699420ea2d38323a52c126b38af8e004cf3be14ddc8dbae3. 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/QZ2J21505751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48634b39d99efcf8394d06bf29659ae38459bed87825b4493062384cee433a5b. 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/QZ2J21505199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75467af976553707e12a2db1ebede885548ac1ccd292bb7c265900805e79374c. 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/QZ2J21505753.
Indestructible (Remix) ft. Anmily Brown, Oveja Cosmica, Ada Betsabe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5da6ab192ca9db537c24cb8f5262e942ec0ee765e5c47ebc9c168f2a32b3eaf. 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/QZ2J21505676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef57960eaee57ab1f219bc090c4da7ef22fb67d21f732c400e9447509d1dd83. 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/GBLFP2047159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ba6e84afba80c4f315850974a918ffd7e81f87cc1d7f5039c4b41b7aae229b. 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/GBLFP2047158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8e7c1858a2c47b4b11714d0bea611fcf4a0712a6b16ebdb85872718d7defb9. 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/GBLFP2047155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4293c8074fd63e8604e6099048aee84bf26148596d314b02103bae1c3c07213c. 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/GBLFP2047157.
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 0xd1dfe5d4a742f78cf53fbf6c9213207e50eae606b6e6ef4d908bae803c7b4245. 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/QZHNC2278748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28ffbb1aa2fc845d555fd5a265ca19095b59381ea0effeb500eae807ceedfc2. 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/QZHNC2278749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254fa8b81e84bc68fdd7e0dc1b091de2df85995a40e29def1b5f493deee77aa4. 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/QZHNC2278750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bbaeb75a73e1c59713afb9785baf775ea399be80f27a7439f0379c1ec600ac. 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/QZHNC2278751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9017b0c5cc5a1705b1b892611cc6e662423bba2d797a87a0cd9a5d111ca4cb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNC2278752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2477100cd146da7ae6b8c9831d48ac189820aca29614b8a7c1693d1f7cabb72a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNC2278753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429d32f7fe04b5e109463e60656e21a15f673cf9c984e702cd6b8835c881c998. 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/QZHNC2278758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71509987e7f4a00d5d34c62537042a36db4d1c2d42a173b2bff5e38246a74eed. 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/QZFZ42068891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fa11f446ebaa9bee15ffc99100cdfba07dce4f835db74aa70c2c6f014d6d35. 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/QZHNC2278755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657730d34783daa79feee050b841447f31459603d0945c423961a4e4d266182e. 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/QZTAW2390662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abcd754fb03ef882dec88c76192be1884461c4b0675c7acc24cea5d036dd3cb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMZ92123751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395ad60df3ad0ca16246a2fa8de721d5335dbe1762726a6d83847e6e1b21fd9f. 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/QZ5FN2069665.