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 0x887ef55c64ac55c87b349e59ca2adb95f2a84fabbaa9ff506265b75b6f95ed0b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/683288c4-316a-4fe4-921c-962a7399d301.json and https://artists.proofprofile.net/proofs/artist/683288c4-316a-4fe4-921c-962a7399d301.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 0x1f2b758b0d0b42f414fd8360ac1ab2c6b417bb515e17da97a52601d9f0b98f80. 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/KRMIM2214195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f85dec77e47b9ccd2bab751a9e9294a77b23ac441002b337ad7aa7f822b1393. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/KRMIM2214198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfef7b4521d30f6f8e2d55dc4570fb303b42e6f7647089f19ba2f17cf2e62c16. 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/KRMIM2242373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b8ba49daf6334c67c101c860534777435c303a7c585a612d3b0bbefd261a5e. 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/KRMIM2242375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e44161b443457de05817e097dbbbf87ebcc6d3d4e54ba91b1346acfa8ce0e3. 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/KRMIM2242376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8e35afdf00601306023563f0173194ba39b1312cda0b2f022b64b070d93c66. 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/KRMIM2242377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba92c7340d670ee389e7a6f1c7b22b5b498835e22783920d727f236045ef2538. 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/KRMIM2242378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a8cb7b87417327bd759db768026f56c50f370a825ba11f34f6a5fcfc1ba887. 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/KRMIM2242380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976a34b67fce88c64404a2f6ea2d7ffb4898c7d1cb81f6e253069c61215ddd25. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/KRNAR2210183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285bc66554e0838838d0a34c1a03de9d6ab19033d08e8e99c86e4d70ba2210c9. 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/KRNAR2210186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a96d213c2d8b108cf6e69dc0325716384977d21199e5c9445ed643976e8dfde. 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/KRMIM2331836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44b482f59cddcb2653a6dc80a5475c2198325b4aebebfd9ab784adcac5f51cd. 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/KRMIM2331841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fca8ab9ed3a2d8cf599bf681861acdbc7d0b8720f2fed347ff5d12b5fe31c3. 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/KRMIM2331844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a05320677af7d53e568dbcabfa75cbcf90b9fc3117a73ab022def370b80a47. 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/KRMIM2331845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae3e4f298ac7265a13603a10c82392322f931df332ea39b9ae3f0a903cae5c3. 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/KRMIM2351812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118be128be7f6748fb6172782599930332021f42d03cf7a9b32f0eb1c7d303a3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/KRMIM2351813.