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 0xb94fe94170acd71bb9bcdca1d354f268e155a132128a40d8f67f2556b4bc49fa. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/836d94ac-b816-44d7-83ea-8cf874cb18c1.json and https://artists.proofprofile.net/proofs/artist/836d94ac-b816-44d7-83ea-8cf874cb18c1.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 0xff3346a289006b371b310d5e563bac74c505bb6a4afed2e7f81c9ea6cc26431b. 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/MYPG11100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7286be8fdb134a9a5737f822876e20eef7463df3896de0ce8cd683e0248b67fd. 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/MYPG11100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247025557e6891666c3989ad8a7d375d875c0465a475f4ccce4ccc24e3b393fe. 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/MYPG11100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6373411d6c32b26e12e5ab5d948c03541552b22cfe0069a01e79be9d134a46d7. 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/MYPG11100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcab6b904e1a839b3028ab0333cdae522b49c7830e6b5a7a3d73c1e36825c2aa. 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/MYPG11100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441b25c0bdeec017aaf12c5b550f2e9cee8bbb8830b2a0dc3e4fba0fc2907f0a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MYPG11100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa4eece44afa384887e0ae598e39d9fa7f424f15790680de5d95b1ec8fd414e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYPG11100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2252009b7aca7adc3bf38b93c048b71c551eefc1ba315f174531f7a7f7cb037e. 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/MYPG11100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bd310783cbdbf607719cfd7c75d5c40f1271a930addcee4aa50bbbd77daafb. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/MYPG11100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b2c620d2e06c4267889f04bf167abac5ed81cf591535083e8d66a3b79abeb6. 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/MYPG11100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73b945525fde99782a22c945672793463867b55daee1307e64e26e1f6b80836. 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/MYPG11100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaa29776bfa815a2298a406a328d12b59068ae9ef6431251dc5703bc4fba1a8. 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/MYTP11700089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa4eece44afa384887e0ae598e39d9fa7f424f15790680de5d95b1ec8fd414e. 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/MYPG11100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c72d642e76101d00f464c1bb095fbd5f3ee08259ceec5ae3e1ee1f45a7954df. 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/FR96X2148147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2252009b7aca7adc3bf38b93c048b71c551eefc1ba315f174531f7a7f7cb037e. 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/MYPG11100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441b25c0bdeec017aaf12c5b550f2e9cee8bbb8830b2a0dc3e4fba0fc2907f0a. 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/MYPG11100008.