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 0x0265fcd3294d89e02fd6fea83c4d909d4021ea3afb7c9a2d444052620fd850a4. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f305a21-2e95-46c5-b029-5c0a063789cb.json and https://artists.proofprofile.net/proofs/artist/6f305a21-2e95-46c5-b029-5c0a063789cb.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 0xfca1502f6c314ec13561a4b0d51319b5898ebea2c6874c9a2aea563340dde1d6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEW272400742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc486e2f51ba41b2b2a77006947cbda35b2c5ce67ae6ba76b112c5a5e2eea195f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEW272400743.
Strandhögg Pt. I Drachen Im Nebel (Revised Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90930aa1ca60576cb74a194ae25847e28adc807900114843c7ed323d8b393d59. 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/DEW272400751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979f8fd7a2741eb4f72ab18ad756bc4ea3c870629732b0e1ff3393bab3623cfd. 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/DEW272400744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1abc38ac3a3054ba0146fb9c97253454a11bfcd2a48b34c3afbd2c2f9ee085. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEW272400745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fb03888a689e74c484b5c1d20f09832e2076b63301004fc62fa41a0d32615e. 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/DEW272400746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e0dbe568fad16d6cbb1b6c7735da7052bd9fe3252f5320107ab41cdc1b1626. 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/DEW272400755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248aebc997478f93d3ab1e994fc14b22220323e65d0c451202607b0ebca8cbf4. 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/DEW272400756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9792a022d53b2c7c3fa91d3c4222a8017767169846f9c57e30f9d90f89beae4. 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/DEZ901100319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6738aa70ec5f256b5a6de46b50aea2a34c2f95d5f5b2ef27b783aa4f47bc66. 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/DEZ901100320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaff0227923803dde867a21624d9a1d9d433e2245fd8541cf19bbb0fbc823006. 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/DEZ901100321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6160546b779e1afb0323e055135f2268ba0d445890838365a2496c1ebb551c61. 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/DEZ901100324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0343b8897a84ebdfbc08f0c9a2d3f93a3bc43733a7a6f14bd66b4e81a4d95969. 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/DEZ901100326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cb8e88aa0c4c1e533cf3e4baa4d0054117cda21dcb91590f0cb7d46fd192dc. 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/DEZ901100327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6da40f4aeea81fb0ad312a9b220ec0ac5cde02f2c658a71e35021395e380b7. 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/FRX202048900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9481b61b39dfea93b73ee57608d11e2abf8bca7e9db7b09aa68ed5ad4491ab2b. 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/FRX202048902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2adf1e0f2beb903f36983caa47ec46538f311e0f12a1f1e0a30c257e0859cc. 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/FRX202048905.