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 0xee264448e3f2355c8f45251ee977dbd5c8e3e961f5aab52a6d0ee1f499fd155f. 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/2eae5115-f7c8-45e2-8708-ea2a7e1c99b7.json and https://artists.proofprofile.net/proofs/artist/2eae5115-f7c8-45e2-8708-ea2a7e1c99b7.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 0x9ab9f96a55ff2cf61342e897ef8d3ac610d0b9a2e39d32875a0fa815047923f3. 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/TR7801700186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea9ed2b83192acd22fdfcaed2285ddc6b923ea54453b3583576aca1b500bd98. 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/TR7801700187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567954bcda6314b39d916d4f9e29e05ee61eb65639f720527d39f05152c0cb19. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR7801700188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95226ad2e4a8316715de6cda63dd40dcaa2d5d1c8fe282b30b177b7fdbf4a079. 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/TR7801700189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169e3c369ffb4387c8219bbad461d96d542eb481e4e56436fde757b10b0f4b6c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR7801700190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf32285aafeff99584bde38b740d78f53e2e615e5af21d657bfd4da7dfd5f546. 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/TR7801700191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16eefbf7be2230d32d2e2ae35429f4dfd673079d106003362b5a10ccde8392b1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TR7801700192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b742c517eeb77de473b7726672457c4e2a8759c8a4b4e04d7f2790a91d8a3f4. 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/TR7801700193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81de0a84f2199e296ab5ba5cd6d29178aa164895894feaec3b291ee19b1046e. 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/TR7801700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a7dc2bdb0f402e27e765eb3c30a7a13b816bf391f517fab6c8cc775f13661d. 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/TR7801700195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1afb8132932f9de4a32a08ab87ca3ebceead52f53153abc7e135b8eab4854eb. 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/TR7801700196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924c953e462142d398040abb1016e17c2e6765f18ade393fa9d7265caa366113. 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/TR7801700197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedafb0e22bd43c62926572c8ddf49024d2cc5f7531c82d281dcb345991ddb469. 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/TR7801700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9682799241a684af46936a10fb6d70c9bc4e4e001676f0439470cb902b1ef5ca. 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/TR7801700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6dd6d477dd1951ebbd7165e5bffae87215da56c784071b7249dd4424a2684e2. 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/TR7801700200.