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 0x483782f77b7ee2ddfd2413e5219e005da8f08889a95280e34a16a8dd2599386e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5354547d-a4f7-474c-9656-dc74fe1cbcab.json and https://artists.proofprofile.net/proofs/artist/5354547d-a4f7-474c-9656-dc74fe1cbcab.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 0x44438e7cc9aeaccfe326cd5eaa809728915b6383d97c99bf7626e4828eedaf48. 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/USWD11263007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28223cac2517d7b0af0070b2e17b076c4ffdb843c4de6a2de1315370c96c0fab. 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/USWD11263008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a637d3ab9cd4eb15f70d89e83ad709aa603e1e12f481608c5290189d19de17e. 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/USWD11263009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02039b212db253704ff436f42717eb9d48a270057b731dd57a7611c185f83b9e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWD11263010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36873fe4bd6f4d2ffaf87cf7f37005e7b199a57f47d9a698791152f32a31820a. 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/USWD11263011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2dd07aef1397756fbd15b3ea76b3300aef2117b24204499ab82c3bff21e23f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWD11263012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c8a1f6d1ceffa21f0be755b39a6b4b78fe7770ae34a11ce110867de25e80be. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWD11263013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1d4cdf6b09e591c0d47638fc290b6265485e9d5863494b02177aa406c0abf0. 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/USWD11263014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d14f26a7b31ec317d0f74d4acc7493dd0d6f3c1a9e5c441f8c02ba8a0eeafd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWD11263015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2ba1963bc4d2f2c1b11581c980c6b435ebac62af9cd5e30f82a860b367ef3c. 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/USWD11263016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe820b470c609b1447de523e2d33029a2a09f7a59f9f42e568b44e954f07fa50b. 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/USWD11263017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46f6710749281a3b32372f2a2cbe9a5cb9945c4672455b3df45c6db32004f9b. 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/USWD11263018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd95b249646f4de58b6ca3a81629bfa58224be17c8048b18fcc002b6cb811be. 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/USWD11263019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737d992a5889a401920575c70241c3fff47c6c4b9e0235e2b2c69ada25148b76. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWD11263020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7067e8722cb3f0644044b91bc0c17b44e581a85468d20a5d8c0baafcdb68a3e. 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/USWD11263021.