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 0x5671da9dd1c79a1429ee6b1fec9044f5c3c12e5565c36a3866d4617b5c00e9b8. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b8c6ee8-0ce4-4c97-b1d2-5c702998a614.json and https://artists.proofprofile.net/proofs/artist/6b8c6ee8-0ce4-4c97-b1d2-5c702998a614.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 0xc7871790bbb590f87c97cc2fa1e4b8d26da9b135898faed18489a148d4c30b84. 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/CH6542043324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b7e8bac40ca58a48f2200fe00d261f8a71833643611b7b881c2db9ebf71a84. 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/CH6542097471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e1dc68853f55f07c26eb2ffecbb9e2db0dd9d2400629e21af9d08d72d80329. 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/CH6542043317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3f5b22c5939ff48a9b7038c3b2842d71331e39bfbc88a647ecdc60f63b4c66. 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/CH6542043316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2c341886ad4babf12c967a61990935a1d12caf65667fd385e2404914a0a73c. 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/CHF432100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781aad33143e37f2202fd3ffa38f32b194707a70da29cebe95fd8d4ad2bf2165. 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/CHF432100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea3bcf1143875af51a9f74488c2fec0ae3520e69c593aaa2e43a2964c5fe2ef. 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/CHF432100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2c341886ad4babf12c967a61990935a1d12caf65667fd385e2404914a0a73c. 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/CHF432100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a588cbbd628cda7578e135a5dbbba4eb19d6e5c4dc6637c48391124fd509b35. 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/CHF432100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa87e9d950e5540dac47ca3537ddd6a6d509dcb73f6370330dce409b7491790. 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/CHF432100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac0737dfc560d7d4b22bf49201c343defd7da0145bd61d0a7ed8f57bcbc0b6a. 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/CHF432100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a68043dd9fc7f3644e36ed2018f3bb814b7775c608fa752739e6569a1d6e72b. 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/CH6542043325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7871790bbb590f87c97cc2fa1e4b8d26da9b135898faed18489a148d4c30b84. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH6542043324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d742a4fbeac7daa550141cf2b662edbd6ebfda534fbe573cfadbc365fc785af. 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/CH6542043321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a977bcb30d3bf1fc0411876ba8cc775d19a2261b8f1e0044ebca8a60c53439f. 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/CH6542043320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e1dc68853f55f07c26eb2ffecbb9e2db0dd9d2400629e21af9d08d72d80329. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH6542043317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7261f3536fdc64411c887498ce7e7810537ddd40f4b1ca25d7c5f9f6ae0dfc79. 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/CH6542097474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b7e8bac40ca58a48f2200fe00d261f8a71833643611b7b881c2db9ebf71a84. 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/CH6542097471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4a04b09270faa7bca642312e4050ac26137e19dfd1bb84705a158d9258a94c. 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/CH6542097472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2994b0ab385d56329a7ce630f5a9f4109e84ac2ee2039d0be699f8de7e5e1e54. 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/CH6542097469.