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 0x7eeab17f00e2a3e869b6b44524b2b939e74798919a3bcffce984a3f61bb3a07f. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99f4be87-b1d8-466b-b085-2ee6e4f63f68.json and https://artists.proofprofile.net/proofs/artist/99f4be87-b1d8-466b-b085-2ee6e4f63f68.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 0xbc2f23da6cb93b203fee83cd78d2a933ee38728fc0ee96747272b22484313591. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZSYP2408418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741f16fb8eb4f0732a63d68bbb5a09cf9ad1e01565ef40522c8594afddea0d60. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE5BU2483123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3639ee0150569cd7afe41804f0b92b15c3f3d053ec81cf392d29650c974a1da. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE5BU2486442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517998125860efd758178f18e61e3f252541a770affc84854219a005d0e61104. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5BU2483130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8dc610ccc986222bdebf3f72ba2e8fb99ee537fa9b6f7d5bac77bd723d0328. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/SE5BU2483155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007bc99dc1f4e45373b6ca5bc6a2f75fa5cc86bccdf0f0b3e7661c2526e296b6. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SE5BU2483159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803e2500d9379eeafeed43fb02ad6019c608b233783352bd3d6931e70ce003f7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE5BU2483165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe250ac367c2e231325f4d71f4e09714177deec4c8056a6bd24654b48d6b4ebd2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE5BU2483126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b30a10d1c4e77e4931f525dfe41bd061d96cc729bc64a39e5fb5fea23bce9a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5BU2483109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e6c91d47380be068e0a007b570f95723c6fdec146cd80f965af594eec997a0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE5BU2483113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa928622eb01040249d031e45f92f41809852ef3e48e41ded3fe06eafcf332287. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5BU2483115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286583c1a3ba8e7ad9a7319ab742790bb02a3d104b402b2e04466c0b61cb26b6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5BU2483116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde10712d41812890ee4fcb94c46ab01061ed16545fa79fe2f3507e5418ff6f4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE5BU2483158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1ca2cfb457cc0e7c57e3052ef8700ed8b4dba05ba510248d2bdf73bd0fed95. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SE5BU2483118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245e7bab590649559af5fd8d75acc2603dc04f394ffc9a490f37b8a38f4f2c60. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE5BU2483119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b34f96ecea9a4caf3d4ffcf484bfac8744e1689120dab58ed37d95202489556. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMZ92457993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebd6393e04ea1e3dbaed2f7f60b1fc2b2daf7b4ff410f2110ab89363d076a48. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMZ92457956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ce26affc6908cac37735237abfc033daafbf22c9a79417c689d630b8f52305. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNJY2429730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bc4b062a088b73e3b1361c6a2a8009f48db36493b9fee2d8874aafd011c256. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZNJY2461266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9959d4b8b397c5e763c32aa0e5712852458c264334c55cf290db86a13391fc81. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE5BU2483132.