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 0x24c6dca821e109dbee089efdf261ab5c5735fd66158fef72f677b972790e9811. 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/4d84b4df-18f1-486c-bd9a-404335bf0da3.json and https://artists.proofprofile.net/proofs/artist/4d84b4df-18f1-486c-bd9a-404335bf0da3.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 0x16c575ddd25f6bdeeb4a6cd8d239de273243ae85f575113727cdf378c7e1b639. 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/GBEWA2100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216d5437f37c39eec596c45baedffe4069fabe06b4de8ea0f69bd4b34b8d517d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEWA2100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3ce48993dab805d7c43fcb84418d9fef2acc8737302e557a29098f92bf177c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBEWA2100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe9b1532eb7e6d83e0ce324aa9cfc34a6822f9c17520cccc3d40a1dac1f2dc0. 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/GBEWA2303920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014723aeb5ced31e5a71f3245714527c22fee4e85fa16706e6d4a3bb6b3a700e. 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/GBKQU2344265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0889a7bd50f7d9793696e960c940570b5b0fb0b6797adda2a921eba2c4af05b5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLV62200658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5fad15d3f624cf66810dd0da5839dfd07bc90490f181f1e07771aa98b8e04d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2344266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713ad1a7474921a508c7f010f782a930735f1eb5cef41f65777893ad2210550a. 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/GBEWA2207800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee689dbbf4b9ecb74c2fa020dc8d03d2bac900f0bd5a4dfdbbf918eccfc3194b. 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/GBEWA2203270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f27afee1462026be0fe9caa212d708b2e9f7af5175d02bbd7642cdfe815d6d6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEWA2203271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5cdc312e948c825aad363ed1591fc234fb55b89432bee22cdb3d98b55f3e79. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DES232200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240e792706b19db7df92020abe0dc41822f1e55238ce1a467b37ce19a3f97de8. 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/DES232200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3674f37821488f2ec22c62099b7abe52874b1336826a1d47b8a53b73d197421b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBEWA2106110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303b9cacee0216c7bc576a96bf05634c1f5a7bd4d7a2e25926f51b5a4d17a187. 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/GBEWA2106111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5d39afcf54c5494015220b1fc47d02953edfd728e9859f462024d8e4fdac57. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DES232100380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c6d159a185af08c5ad4a8943454a13db88cce0c032480c6805d6f4512a1f90. 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/DES232100381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5948921f6eeb27451870ef7b1e7385e151e6b23ea8e4035e846336b1f2770d. 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/GBEWA2103402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955e73cee78032e53d6d6172172236413bb3de80d2b3049d501b6ec6ceb9b993. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEWA2102730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f20c5772b2b2f7047655ab388d7a1ccf95ddf449447d84f5652ae72b343855. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEWA2102170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab2d1bff0ffbdc4dfc907a15216d33521a616289514b6ad6d4d9f207eeed670. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBEWA1910370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186bc02fc4be5efd654151fedeb8297c6c5d653170b374da8253be2759c45190. 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/GBEWA1909780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871c720b4d40d3beed8c87ae69261e5e4e846441954109153b9b6fd632649522. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBEWA1908980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186bc02fc4be5efd654151fedeb8297c6c5d653170b374da8253be2759c45190. 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/GBEWA1909780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871c720b4d40d3beed8c87ae69261e5e4e846441954109153b9b6fd632649522. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEWA1908980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871c720b4d40d3beed8c87ae69261e5e4e846441954109153b9b6fd632649522. 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/GBEWA1908980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d831ead935c848b6840ef2bb97cb4813de566e08ff6e7fe6a4bb4e015c45fff. 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/GBEWA2206632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c798cf6f9d40218ff9f2d916254eb74c5c0600373fb47453e9a401e38749e3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBKQU2382350.