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 0xa0a2341b85c5cf0b0e626ab03d4d947e3f76f06f5a7f0197b78f0d1e7a286f0a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c32ca14f-542b-4804-8242-a4eae32b52a8.json and https://artists.proofprofile.net/proofs/artist/c32ca14f-542b-4804-8242-a4eae32b52a8.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 0x7bc550337a5bd98627cc303f222bd7d467a07fdab205eee10ee2dc110cc74e1b. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USA2B1800383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62d44bb9601a87ddf1294ce5fec6236d9b8aa995aa647b222be5919da2ef335. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USA2B1800384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d8f5a6a7ea2eeae60e0035045a2ef8d6fc67f0f9227554705e4c571bc64cf7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA2B1800385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b063539dbd275a670f6c0ef61ba0b3464794184ab1489c982a76874fd4a56a4. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/USA2B1800386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dac539ca4e11e7bffa52521f0006409d8f0239210856da5c6d01f816031a74f. 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/USA2B1800388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30e3c4ca0dc6b1f52bcf695cfbf1d708d5c73e6a027b6fa7be069a04b9eb326. 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/USA2B1800389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd5a58f99587ac318e8a032c52e89845f7e3d2bf4e68f43a1c26a8003b813fe. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USA2B1903164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb528b2f84ad5ea783fd6e91320c08cb5298ae6959c9639ce7b7ca080f27b568e. 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/USA2B1903168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bccd39408f66ffc96694281e85cc33a235320d70c23b83d5336c0f1a20faf57. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USA2B1903170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe472cf3a74cf3eaba99d4c894aec9f09d73e6d08c484bf9286ed229d3dd513. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USA2B2101786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607c6201b338256876eea669b70ee1aac9a4b8ae867f129b3de188248af8d3b6. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USSUB2359102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadda487dcb5d08b0a4e858c1d014fca19fa771301c2417fd0d62b882cb1adf7d. 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/USSUB2359104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c64e65d88f97c11e1645797b0aa318cb974702c2337905faac1adab5f0de083. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USSUB2359108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600ebe28be763e5d50373516fa07b0170440b2ee620649e5067bca2a56068220. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USSUB2359109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3d4ad2a9b8ae0f32632e326dbb2d32f0b359ec11671dfab58f2a9f39609a6a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/USSUB2359110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bf3ac756dff129414cfcb6919e56ed6221177e7538b83f25e4a19948bd7015. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USSUB2359112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae9d444dcf7c07fb29df984d5821c79531b57c73ee2f6d3df20abf186d80411. 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/USSUB2359113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abf803bcc67df3b4c5e76a61310e80965915dd7333e5879e66b7328f1009f65. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:58:36Z), 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/USSUB2568401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef8d5fadf53dea8b93f7caf9959d1d052e52b00200c90b5e9be51d75cde6196. 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/USSUB2568402.