thumb|upright=1.2|Love's Messenger by Marie Spartali Stillman, 1885 thumb|upright=1.2|The Love Letter by Johannes Vermeer, c. 1669-70 thumb|upright=1.2|The Love Letter by Jean-Honoré Fragonard, c. 177
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 0x94e8e1ad1590302f34011b28936c7694508738bacff05be91766db506d7c014b. 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/537ad35a-9460-42a5-9e6d-d6c4ded57113.json and https://artists.proofprofile.net/proofs/artist/537ad35a-9460-42a5-9e6d-d6c4ded57113.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 0x707b262fe5689a8ade3d74ea8776ee2cdf81ac7be2e184fd9f203e8512c4b66b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USQY51769981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42021d1fb403c00f2558e6c094df5e9fd9d71f651b1c4620e7b12af8088c780a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USZZ81810028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbca81ccbb73e9e409cb2f8cd174af882a803e12481abd38ec7afe43a6fbb381. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USZZ81810029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb292215d59fd21132f475ddcf5d4807870b012d8c3eef7efaeff6bfc1ad98fcc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USZZ81810030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54960ea2bfab3b174111ec998c0999729270f43935e30d9ff4f4c6b6ec1085ed. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM4TW2471972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46833f7d9354775f28b45016039392df724bcf68c19dc490a4301ef220fed4fe. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QM4TX2459203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d768b9a6b39771b37279649197f9e23a4d3bc2d22b7cb3596684be3f929edf. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM4TX2459204.
Debilitating Self Doubt And The Will To Use It
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d7b0db46ae16072dafacd6f82dbb4fd06d2b90a627d510c667bef1f0cebb33. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:06Z), 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/QM4TX2459206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67a4c8d58c4240859365f72e0b5f6fcb78b6643972a2a565b479156e981d438. 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/QM4TX2459207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827fb61338592b9bf31680992eeb434e13feeddf88c1b5571342a042a32e8a88. 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/QM4TX2459208.