thumb|upright=0.8|A belt of 0.50 caliber ammunition loaded into an M2 Browning. Every fifth round (red tip) is an M20 (armor piercing incendiary tracer). Ammunition, also known as ammo, is the materi
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 0xe66b8c4c2277c48e46f502fbee7ff219f04b5bfdc9e8adef5c3389889209982a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8b21715-1b3b-4d09-a1a3-765fab1b2841.json and https://artists.proofprofile.net/proofs/artist/a8b21715-1b3b-4d09-a1a3-765fab1b2841.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 0x0baaf3b128b823f1f562e14f302f60e406d297809fb95574da218454c2cc0936. 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/ITG271800229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d82bee161b80df746c8976c2c52f2ca7e7dbc9d2fff724750be176522b0fbd6. 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/ITG271800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975cf4a135b4c854ef35156034117ebdcd3ed8e65d3ce4289712a4ed1e79e5fa. 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/ITG271800231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b28d37330f85e4373748154ee70ed8d7808829580b5c2454035b748e2fed7d3. 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/ITG271800233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a673d312d26e0c549dd1396278c77e4f183772af1da0d75bcff8660425f4b25. 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/ITG271800235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfa42570018ccd0b65abb86b3316c28631002edaf12c37516a402f0ad0ab5d1. 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/ITG271800236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ae2cd3590a759c65a21c297736a520286b26df0784607a3f8369049e2cd9a7. 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/ITG271800238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a181ae380b4fe40055e11f676325a0a490bfe65c12cbfbde62c36aec254d9ad. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:06:39Z), 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/ITG271800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f7a20ae70b3252282b034d21db4f4c3782a65a7ed550d0633e9cf78816991a. 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/NO22V1402011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cb3ab8632809f6100f207449f19105175402730b7c5326f0c2d57be4d02ac7. 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/NO22V1402021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2734718e97f47e0721725fa7b5d9dadbd02d54e513ff015eb230137209cc83a0. 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/NO22V1402042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e608fe6ce08a8b7c2d428ee072dd6f1ba7493654d81f03d23e041a4fbcd570. 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/NO22V1402051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea9dbbdf69272ab8564dd7dbd6e7be75a809837e89691f0b0a7ca8ee06ad8ea. 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/NO22V1402081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdb813049fbb801903ed44b006d5238d37c9880b998f066c23daca6f1acf46b. 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/NO22V1402091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d82bee161b80df746c8976c2c52f2ca7e7dbc9d2fff724750be176522b0fbd6. 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/ITG271800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1d74a81d83862deaaece929a16ac1603cf5fce1554f4b7dc9a98188c4ced68. 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/SE5AA1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b72772d3b98a87317fbbe96d3b1543c56802e524ae363968165a5e35f94ea87. 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/NO22V1403011.