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 0x7148f808aec906ae37fbf52f09f18872214361c795e7a3c640c1d9618f83210e. 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/09b2a695-b3ce-460a-ab21-bb8f693c3486.json and https://artists.proofprofile.net/proofs/artist/09b2a695-b3ce-460a-ab21-bb8f693c3486.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 0x850fd0dec3bd055d22c232b181fe73fec89dd28a0fd179654cbd01a4d8bb7276. 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/QZFZ72310900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a71df64e8957a5a6d5e00a95d6ad348d2ece9979d025ea6f910c251cf8a319. 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/QZK6P2386610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f77ee26ed3f9fd390c718b5d87005b21f408a0a0fcdf90524237b4e554ebb4. 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/CA5KR2352048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331e1e8eeb5b42090a0375128204c51c767169178fcb522d40fc2a80cea3ceb1. 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/QZNWU2031532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1116a67dfad7d51108407c5ad2218ad1e9be27a945accb13055523330ef3467d. 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/QZNWU2031533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff39da4180a577eb0a0a83d95ec49313ca20e35a26f5b5a667a3bab48b898f6. 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/QZNWU2031534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce74b16980ebcb9a96b9aa70a276a435c5974e1cf2202dc2f8bd4d39a55b13bd. 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/QZNWU2031535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6352848a9d0e900c28c9de46af9cde017dc7679d448323354f5eff57d3a4f7d4. 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/QZNWU2031536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0fc9709005c72603ee321eac18b3dd40909fc255301679b8848330c14612df. 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/QZNWU2031537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c5396aad6c16063aa820041e791979db6efeefed5fd704a9160405723702e3. 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/QZNWU2031538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6828780188a1ae12d2318a848f8107279bb6d658dbb2e2b77d906bc26403f494. 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/QZ9Y21780676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79455f6ebc6b004ebadb8a0a8c3987f869fe955b31de52d780ae78261413de9f. 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/QZ9Y21780677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8575069047036a41127cc11ff9d8117b52c51e43f9f3459be935c41d5a9ebd8. 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/QZ9Y21780679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8038c7d5ab615e41a7ec1aaa9fc83b52920be5797fbc8f0fd538645188b0af8c. 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/QZ9Y21780683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3993f9823a5e7b424965d47a7411d4bb4e9768df4aec7e0fdb33185f77988a. 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/QZWFG2362137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0508b9b82be4663d719b33711dde29db2fc98d76e91a539bd7edefe6d70371c7. 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/QZHN72367094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff47cc5a5c7ae27b7c480350e1d7635f91051a200654eba256cc6b9221fe496. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZHNC2275851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6352848a9d0e900c28c9de46af9cde017dc7679d448323354f5eff57d3a4f7d4. 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/QZNWU2031536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7efb630c78179fd169b751ceae60f9e0da7657349e56ba30d6ff73e5205c640. 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/QZMEQ2000638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04de327b1493240dd5ee626aa0de563c6ae96df5bd8a5d80f3e483f052198228. 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/QZFZ31962639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73d8c2411cf2c840741502e4a95c1bd46bdb35ffe0e12779d86681c6453e6c8. 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/CA5KR1980428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f77ee26ed3f9fd390c718b5d87005b21f408a0a0fcdf90524237b4e554ebb4. 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/CA5KR2352048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d408fff6b98afe767aef72c163cf2b4887a806862ce33344a237ec756f0265. 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/CA5KR2215275.