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 0x75de3e8fec2b4cc0a6916658d0dbb790c062387d1bc8772baaa231275eb49fbf. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3aeea69-4ca8-4801-841e-778848127901.json and https://artists.proofprofile.net/proofs/artist/c3aeea69-4ca8-4801-841e-778848127901.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 0x46cf5cd70f9b7d0c2baa557de76106ca95bf7a4ce84c89fe5a7d3f79c412ae65. 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/USDYP0810816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317a980af0c545a06634474f5f112f25b5b8a074ecd4e3db74c927a9cba59651. 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/USDYP0810833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec682044c916e652e6a871241dfd152d645c7beceddb07f640cc955c7713c29f. 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/USDYP0810834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf439fe1ceefbca734b0517f747fb7644c62f5690e61f6d77b6927fb2495b84d5. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USDYP0810820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cab340cf141cd4ab04d9183870f8934ed0b543b66c8d809cc551070935267b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDYP0810821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81ec4e6cb05af24cc6e5cfdcef038bc706a7bc3307096d71b12685e5ad86036. 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/USDYP0810836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400349435c951c3371f61c2300156a5f027aa82ee71b6a2a5a9bd55705ceb41f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDYP0810822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74603190a2df6d9f37ae657746a574312fa7fedd05d4d1265eeaefb3b97652b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDYP0810837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e52e0f9d5284cc1d08926edee3225e45a9e98cb4564c842e71c8ca2403ee83d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDYP0810823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b7e8f8794e9395d396d10825460dee5f0e3298102e0d1ea4a75d27c847ad24. 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/USDYP0810838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b0bdc08fe4e0e44b32af3355e62563dfa53af5c2ed2a785a84e35e4ec4602d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T16:44:45Z), 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/USDYP0810825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcc9722bef8ebf4045827dace796f6bc177010a8c613b46026502cf8a99bbc4. 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/USDYP0810840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15607a9a8c22261cd8026830a8f3a0af4e6fb1e1b190251711ce03644de258bf. 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/USDYP0810827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9405460eb95e458653c265f250a509b77b5167c63f29bb0a7a81fda919d2cfe. 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/USDYP0810843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99dc9b5ef174019d508bfa89890ac6e0956da15887747106f75805d453fb29a. 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/USDYP0810844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2395787983583bf55d90cd36d26ca507f6eae6fdfe3a30acec41a5f0d726e3e3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USDYP0810830.