1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa8fd5657c28f774ad400428e817f30e0ed82c92c00145a9b3d974daacf092a35. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3eb65a2a-f0a2-4f3b-a820-d3977d752174.json and https://artists.proofprofile.net/proofs/artist/3eb65a2a-f0a2-4f3b-a820-d3977d752174.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 → block OTSBitcoinBlock must exist at that height 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 0x000e08c99752f068c4e8b83ffa9672ce509bf7664b11701d06feb7ce617681b6. 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/QZNWV2078457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce0bd98eab6857ce07e6ed5b81f426deae31c7b80e90af723e18ac2399b1661. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWV2078460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2fadcd1f9d3ce8e44fc5bd8151252ac20781bc7368286a61f3540a44c9357d. 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/QZTAX2430382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e7afdf4a78e41ba9cbe3c572fe333a5a6c72a5921a979bf986b6ae60125414. 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/QZNWW2472949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4988f390c441c8bc3b73d434386f053c914f82ee503e7ba9dd9fb03aa441fe78. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/QZNWS2398869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a145170250e82b30ecb1a5676b1c981d42c3aaedfc994937c1c62b308bfdbe5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB22297725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c224e5358a033c4d4f32568a59875ec4346ea9b587c2938f85d4400e094d01. 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/QZHN82254948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489131f57024405835819d211485f9b38c77ac06a27ab988982f4c6757f6c60e. 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/QZHN82254949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d61f405a9c6c8e92b3c8443cd248ad81eba6a70cefaaaa8e2267ae358de90bd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHN82254950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a588792acf26b40a7a623decb0e1f7f399a90b3d97f8ed55ac683c8858b1674. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZMEP2165908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ec00f9475b5d46d4552f637afe6bc3217bac50e96bcff7fb9b6613b0edb91f. 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/QZDA62192966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77918755d3e3e770268493e8cd6cafa559ddd14ed538bdf7e974188022ffe2a7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ52184505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebb175d4a118f22cf2e8c0f2287cdd43e37d283a13dbc16548cb123f3736e4c. 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/QZTBE2478191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985b1f37bbd7e248e5481501d9691aabed8efc0da7d6a841676556e1014900a6. 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/QZTBE2478193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6709a9e70db28623528827a12e45176d6c9c5783e659836322ae4e721df7a87d. 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/QZTBE2478196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6276d80a5c4a89c9b03383e8abadb0b0bac7ed241d1506f9a39f670a84abe2. 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/QZTBE2478197.