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 0x7380c22df83f1f88d6e3d17f6ccb054f8d3073cb53f414f6ac4d32b6aef0e8a9. 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/796c59ef-91d4-4a9b-966a-c3ac25d8d195.json and https://artists.proofprofile.net/proofs/artist/796c59ef-91d4-4a9b-966a-c3ac25d8d195.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 0x71ce5621a5f1bed255c1b8a72db57d8f4f4dbcbc55703d25a9ed6f6979f79e8e. 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/QMEU32114409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801f7152e382a74df6a3c864953e9292608d170cbbc82a78bd24d764f7bf2041. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMEU32114410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d586e2f6fd86fe608b3e50be55d2da64aa7840670583686eb8dff0727dbecb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMEU32114411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c96c786241207fa187b0b009e354df410510bfa9de2a0879d967560f9c64a5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:47:26Z), 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/QMEU32114412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24eb62cd1632f265cb58178433abeab418e264cea279ec5b3ecd946e2cf3d65. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMEU32114413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7f8a127fff09aea80ab2b548063bb2a2680b21c3dcf6c5a376294192a22a21. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMEU32114414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77fc4a89fb1219d96cb71132eda548657b057d9e87047258307576f2bf553d5. 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/QMEU32114415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa73cc32052e3bec86574410ecbbe19478d0161b3a1349b5fb9d872f7d98e3e2. 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/QMEU32114416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666ab86649d30b38533d9cfcc291fc433baa7d92883d503e0f2ae133d6bf2a76. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEVU52390336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b41cd217311d45f58ea4c21de96a96e1b28c79fabc176d6f222e431ef8b8a66. 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/DEVU52390337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea71b446c7b51e4fa9312bb2cd4503cedcfd11aea81af99c6679b5d2cd370b0. 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/DEVU52390338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96158ad23f3af8851b31b13649cd1038492a06087a2eb4e0551b4d76a9e368d4. 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/DEVU52390340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e9524a6138ffdbf0ddc3757b936c727e639ca216de6ad859b6d4a29af44a09. 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/DEVU52390341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50097159d69d56e44645bb3a3ddf4a833257bd41c4d90b555738c144e84ac2b2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEVU52390342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08d8430ca9d802e67eec580aba7938ef683f3eb0e78c8e6688b713f22811c3a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEVU52344272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea3f02f5bec73401f0268af073c13c0b75296cdc681b81fe0c347952acdccbf. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:19Z), 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/QMDA72289707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafe22e8386fbceac76cbc4624ec094bc7a83acb199adff7f84a767b46f59dd3. 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/DEVU52465268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ea9d5045873980aa6ff3d546c5a436f8babee1b4e5b869dde4b71c4508b14a. 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/DEXO22408950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6110b0b7339d8c547b79670639256045deca54280efc52ff97306dddae3fff0. 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/DEXO32490188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f86488db3ef8b9e8a931cf04e5a4088e95f9cf9dd5f2b81c2412fdc51ac8d5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEXO42408576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135ad148704ebf16d1d1c7da0c47f3075de2603513c607781baa3b93797b5f29. 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/DEXO42408572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf172ff80a36c242fc364fb476dc308e533a444283511066dafbb419cd26f5f. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/DEXO42408574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d51ef21955d5d08ee27f8aabbaaf67e694de5360a5bad29276a46af59d0719e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:19:43Z), 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/DEXO42408575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836f072280c847c6b23a8674fcfe1be29c64bbfc5b11559cee84c820e66ad105. 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/DEXO42408577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3df8826dd42649c9e2261cd59f381330ad7fb000e738786a7542f63824a7711. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DEXO42408578.