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 0x2b9ee5715f56ee7d462d6ed5111f5768843739d8c436b9a9dfdcdae5778c6833. 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/dc55afac-ca4f-4620-a189-7e78c17e4509.json and https://artists.proofprofile.net/proofs/artist/dc55afac-ca4f-4620-a189-7e78c17e4509.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 0xdad82f06ef64bf55fc3dcaad534e06249af5be7911c3c46d1f166e512b440ef8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADT1859425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb32eba1b876042c48df68bef82502f9cf3078595fd54c707280918275d7e62c. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCADU1886937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8cd723ce1f5a5a860fc3e103235822d7bea8e2b748cc4e39abf42993c0d229. 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/TCADU1887034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa150377dc1078cdac5533d073bdd26033e18f0217a1a0d8e4ee9fbaae98faa51. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:01:36Z), 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/TCADZ1839209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85777c8d6ffd1db3891bd3c7d9fc991f6339dce233f3398890d463e1de94733. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:00:12Z), 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/TCAEC1930438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba6955807f5846d1d699e169a275c3d642b264ad9c15dd79200dc5b607d3046. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAEF1916144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e7d9b394001f90940a94f2c74dd219a8716d257627635a1c46e95db7aac067. 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/FRX202093025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7071d0ff34dc38f067e00cad7ef15309d3c789b9c2c215d0837822a03385ecb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX281917724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fccc99c566e08c9a3698832bc6fea2e7bc9134e9d47d3cd60534b2c0a8aad8f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX202093026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e1d174261ee1af0987792bdbd283d59c155c541c4d3e6a66fe6634c4ab5866. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX281917725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4889bb80be682610f55401cbaf0be7495594df2a0f78e1d678e3575dc73daa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX202093027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d556b9db28047f1285962ae6edbbaf346e398ecd4a4fea7aefd1b6217e990f8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAEF1916158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c79054b39cc72201e2307279c950139672c1873452752ceac4a03f49515b5fc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:58Z), 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/FRX281917727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7d49ac5cd45a610f7f5946ea4fedb2b7df17d72c8fb12495aea435ba807df3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAEA1822551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a93f01b0e9d88e203c64aae869cc1861b36c55d2effcfa529c903467c84b8e. 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/TCAEF1916169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71551af3f55f0b187a3428f922e583766bd2a5a065a406790e1689a3a5d008f3. 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/FRS182120181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e852b7f1f986279859d0057d88900048be5d5914742e2423606221ba46aced. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:04:43Z), 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/FRS182120182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972263a45c6572715d8d7df8542a1da00d7e0b562e04a948a89b990c343d1fc. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FRS182120185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a52220a08b1e8eacb12e80284541b429457d4d2b600783df92b004007fa167. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX282379466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47664c078c6007825e3a1440e1e3858a012f150c57269fa814550c1cd9c81a1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:42Z), 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/FRX282210619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565155a5ecc1726e2d5c3e5489bd19337d03af381023a7a2b830f7a2e541ccd8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX282210620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa071f25a92656519117c30eb5c44e1adb1cfe28c04efd466eab8a634037f6823. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRX282379469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7a44b88e6625a6ea75e6727ccd30b51c38355020519da430007b7e1aa27846. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX202233502.