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 0x5f4b6c8942152b3cc6f6fbb397a265275a1ab4c3d38d675243dbc646f90703f3. 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/669c8b50-e4ef-42dd-8bb0-fc6e998d3fcb.json and https://artists.proofprofile.net/proofs/artist/669c8b50-e4ef-42dd-8bb0-fc6e998d3fcb.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 0x0ae29a19d7813883a85eb17650c4f2e5d59898b4a0e47c3b181bfaf1084855b4. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/SE5Q51700576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee29c99a49adc1899c7d682c19c8a41d469444daf9db80a2430c818d95447e2d. 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/SE5Q51700581.
Inescapably Lost to the Lures of Learning
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff56991e62c1b91c06fe6fe354b4b3cf194caf179d534fb8276d31425e41199. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZZ972478564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e40085ec1a564ae35c466913c07fc9421b1a91d7b62756d56184fdedd13aea. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZZ972336531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3e3a849087c242009e82ff3880c08a3be0393a153a254de5d49d65e182e402. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZZ972356505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5794e0a1a176a516e1245f6cf82ab31cba1c23cca330cb338709aa85958578c. 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/QZZ972350766.
Serenade Under the Starry Sky by the Campfire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2da4636bd368d72eef97cc04972d7cdadb2f249dfbcb95be0e091c2f0d35a64. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ972356256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713946ca0ec1124d8fb98151b1e85a3f9807b1e28f38bfb5aa89b3cd99f66ece. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZZ972478588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce8c6855dcb2160cc8267183a9564c6db83047bca6fbc1ab8e5c161283c1836. 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/QZZ972336505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260de6a7d875c75ed060e3b66d0fa2e16eab4db9eaf2c2afc4a36c644736289d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:17:39Z), 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/QZZ972356298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcdb54f42329c9d8d34de649f274d7afd43b78f607a9ab78ef195341bbf9936. 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/ESA012538680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a22d7e05b96b554fc0b08f6d396a368ccce92a8c66574ac1cc3dc20a13fb79. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:48Z), 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/ESA012538686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe336fb33d304c8c2c4e414461318741fec65bce82f9b101f4c04736c39d3042b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ESA012542289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bef064ca6f24280a5a7dcc55b5548b5786e3b6fbe1f5bedb0be2e7d56ca2b5. 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/ESA012542291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da1bbbb90819c6f4ffd7e75805a51ba9dfffcb68ee628a08398e2cd796656ad. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ESA012542293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33862902a9a82e0698fb6d483e885c1850624338a2c341abcbe78696fa9907ae. 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/ESA012542294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94cf9322770763bb7e0aebe08276e3eb8ff6ebab17a72f705d9baf07c0c8e6a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ESA012542295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2618447c8cf64768bf76524e9433cd881483ee52caea93fb17773fc7513067d2. 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/ESA012542296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6298f86734a3ff6edb0bb72eeedf52b69a1b5ff76d0c5a53340f935edddbb0da. 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/ESA012542298.