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 0x79742c83ae9ce663cabe8672b00c6d411a999018c4a0ec15fade885842ff55e5. 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/d822c247-ff2d-4190-b31c-601b74e7bef1.json and https://artists.proofprofile.net/proofs/artist/d822c247-ff2d-4190-b31c-601b74e7bef1.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 0x834dd1fe1bc9ae1e6dd8008f507a11cd82f59d5bff1758ca7ad9087bbb42dd67. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/DEU340200085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a072607576816ea114c21d1561862a5a89bf54c34f3ed673b83ce5d9a0a733. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:29:50Z), 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/DEU340200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b7976d17cfde585e720a82796f2ed41e7877e4238b331bad6c79e898fa914d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEU340200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8c34d1f5aa50ac37694708fe4e6e2344f90c0383cd2cc10c93dc6943c87858. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEU340200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fe6aa659da55fed837a6182216194940059e6afd8c148ce1f9ff16e2226531. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:32Z), 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/DEU340200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe0d3efd0f8a6d70121d54a69e62cf70c03f6e0fa214d69a79802a891cb3f19. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:08Z), 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/DEU340200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d40be25aa1570b71de6fbd8e2239a5568083618bb70dfea19bebb91596dbb22. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEU340200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a072607576816ea114c21d1561862a5a89bf54c34f3ed673b83ce5d9a0a733. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEU340200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60ee455cf0cb75f426c335fe409a7b0086bb9b99792aff9f919e2df0f4185a1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEU340200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb78a18550f38c592f192de088068f4ac7a6324c02adb32a35711f5e40a99fbf. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEU340200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b7976d17cfde585e720a82796f2ed41e7877e4238b331bad6c79e898fa914d. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:36Z), 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/DEU340200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb119d73fe4ce6808ead59b96986ed144e1df9d7c3a152137fbe7073b05af565. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:18:47Z), 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/DEU340200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5667b6b114befcf8caf835870e052d1409c35e17874e2f9af7aa53d028539cef. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEU340200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91194b101306fb0871b6e810122639271cc20adca6217e04462f862f2a0a1b1e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:09:22Z), 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/DEU340200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc864c12f9d932c1388b07c5109c62c00ee0f0d0ce0aefaa41497d20c60fbc050. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEU340200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c7e1ad2a6f154aec27ceeb5156b0b8606d7f4e1c58ca421a27cac19df11c9c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEU340200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23db4cc1413fd8db260fb1abe077848ae6f24b638240db788c61a3676c13dfc3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEU340200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f5517bf99881607c0c607e2570c0e5a3f868aa5719aec2224ae8085eeb6fc7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEU340200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201a4d84492c92e5781eb1af6dcbfb1c4e098e7da64d6b1f273d0d79170812d6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEU340200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0ab2c3ac23dc756cff2ebaf1511202bec2766137181cbc3ccec392ed6f9fcd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEU340200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfc5751fbc198f7d4ba5ef737fe68af2cdafa27b3d2121b005c1be1b83d7dea. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEU340200135.