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 0x7d757f6e74b06dc3a86e8966ffe7276eeecdbb4b8e964ca1cde261c3c6244229. 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/a8aedaa5-1dac-4724-bfb2-c6ab94ac411a.json and https://artists.proofprofile.net/proofs/artist/a8aedaa5-1dac-4724-bfb2-c6ab94ac411a.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 0x46fe0e78b7d630c85bfc1103a1123f501b463fb98321b216155e582a293bbd98. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR2X41877000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f4d39d40095ee17e8f24a35878de5e405438a16406c677db3568da1e202cde. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FR2X41877002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e960d176aef801c73a4831fd6f69a5e0c9bf13963c41b9d06fae19ce282637. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:39:54Z), 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/FR2X41877003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe586b7e8cbe9e58d0d7e4558b47b2ef67f8df0a79f4aadcbefc7da14bc8ac8ae. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/FR2X41877006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c973e68f70ccbdcdebfb6c201273990e754223851e94af88b15e45602ba80e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X41877007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527cb1215401a67323829d8addb708c78d190f784f3b1a28ffaaa032fadc6246. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR2X41877008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fe0e78b7d630c85bfc1103a1123f501b463fb98321b216155e582a293bbd98. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FR2X41877000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f4d39d40095ee17e8f24a35878de5e405438a16406c677db3568da1e202cde. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR2X41877002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe586b7e8cbe9e58d0d7e4558b47b2ef67f8df0a79f4aadcbefc7da14bc8ac8ae. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FR2X41877006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c973e68f70ccbdcdebfb6c201273990e754223851e94af88b15e45602ba80e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR2X41877007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527cb1215401a67323829d8addb708c78d190f784f3b1a28ffaaa032fadc6246. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR2X41877008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e9a272606e96100fb265abc759b40a6a11bbfc50a42c6fd38b10c757b34cc0. 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/FRX201831574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf6f02f93d5c2924876bd0cfac0b6bf8dace95acb837bd495c91561db9be720. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX201831577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f6e697a8838a99f4dabeb3c32a3ac237f5a5498f8d8f5df53a711fb29eeb1d. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:40:33Z), 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/FRX201831579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf945194e48e1323798ac94f4b67643a543a54458a80147efc56cb08c47838845. 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/FRX201831582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e9a272606e96100fb265abc759b40a6a11bbfc50a42c6fd38b10c757b34cc0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX201831574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf6f02f93d5c2924876bd0cfac0b6bf8dace95acb837bd495c91561db9be720. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FRX201831577.