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 0xbc60b718df744dc82248838b2b79f7118755bcfeda2640478475540c3ab7c2e1. 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/5a57ead2-2768-4c4e-abb4-2f92dafd8bb0.json and https://artists.proofprofile.net/proofs/artist/5a57ead2-2768-4c4e-abb4-2f92dafd8bb0.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 0xef2de762607292922be862d92cfac885c3ab7945c64e15b995d07b4da27719dc. 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/NLT2H2200963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d7bce16e2bc5fc5237fab4c1b9525038cbfe2b5f1413c95585b55a0d9ef34f. 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/ATGU62000321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ce1d910e77e2d5c38b7df02fdb289f57fc84f68a60ff49ddb36cce226def7. 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/ATGU62000260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405ce5569c53596400b456609953a67faa9639f384369eeaeef16ea6b2a30865. 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/ATGU62000193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c0c933dea070babe7b25be8abedcd687d4e125284afee1b6e657e2e2940ea5. 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/NLT2H2301141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4880d055551ac6a733751724b5ad7a10e83229045390953cb703f756372ee0ab. 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/NLT2H2300855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7260c34073509ccf24144dbc13eb05c64af46803ffc1d8db1fbbf31bd2d8ba93. 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/NLT2H2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244553e8c2879b34f3f274977da6986957670c9955ac5567bb2dc1994954f109. 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/NLT2H2300336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c49a7b7fed3b561600f8431f0c1dd6df2f262bda5b1077498a843e4108524ed. 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/NLT2H2100841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212f80f12b50c1f0d32257fb034d8e83f941cf7401ec78f819a759b09a14318e. 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/NLT2H2300943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6028d69e6f392899a45e75169800117fbdb2af256cac549b21d0fb62c0b3bd27. 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/NLT2H2201032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eb10f0b8405f83360481d11e3cfa7864766e519e1abf14ca81ea19c88770f3. 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/NLT2H2100964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f986f1ba06b1d9ec7b0216ceb479ef4d6f721fb63cdae767fa061830ad92da. 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/ATGU62000264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4378e7f74bd3bf09ef2676b2b51ff235469bcde1c60c1d658c121d822ca7d39c. 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/ATGU62000262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bf0042f462af94aeb7a73fcde076c6e02ac49fc797b004832f0c8ba9ead42f. 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/NLT2H2300290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50be466bdc4ad69917bd329777caf938de0230cc663cdee485a50d4abb3842b. 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/NLT2H2300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9a0cf757967bac6014a14d434693c77e6ddc2fc1bfb63dca1b650b31ee4417. 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/GBKQU2414728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f191f24d3f3dd9fc1089dbaee33cc1fc14731206a0d616b1c2c55268bf0308. 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/ATGU62000267.