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 0xd020625c0cea80db5cfdfd9bfb272db5d578a3e9342353cf09081f7dc4f4f81b. 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/8e9ab1b2-535e-4bb4-a502-018b40ae4c0c.json and https://artists.proofprofile.net/proofs/artist/8e9ab1b2-535e-4bb4-a502-018b40ae4c0c.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 0x5185e63c45cb4e5b20bafe171aa2a75037381b98e112a4fbec75fdb0d26ea0cb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX3HH2224395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623685f28ae12b4d3f40ade0f5380f27cd757274f750234e7c82dc67ed1d2c67. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GX3HH2224398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391a7ea466bfd4a6e4041171fa66ad02e8caafb1c9234cf6905c9da128a8241e. 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/GX3HH2224401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752879eae9dde1bd53e063ec0554aa66d053a40c30c91a064ad6560852b9a7bf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX3HH2224402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a47aa3f17f0c942e7838c761053d42d645809dc764c814d30f6de5847d326d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX3HH2224403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80f1a1192efce474d442196b7f9c4f2c947f4185d67c223ccd5700648f3d4da. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/GX3HH2224405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5185e63c45cb4e5b20bafe171aa2a75037381b98e112a4fbec75fdb0d26ea0cb. 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/GX3HH2224395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623685f28ae12b4d3f40ade0f5380f27cd757274f750234e7c82dc67ed1d2c67. 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/GX3HH2224398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179e95873fd146c835e040f69b95440815a0f6cfae09b1d20eea712085c01eaf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBSMU0102309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe593775379bd53bc7245f7df883ef5bb6c6aadcfb17b3d4cd276acbdf3c4a345. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GBSMU0102315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe593775379bd53bc7245f7df883ef5bb6c6aadcfb17b3d4cd276acbdf3c4a345. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:44Z), 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/GBSMU0102315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a224b4ccc1b89e28567ba67c330a68d7f13dc75295e2163824e587e974e8a6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:41:58Z), 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/GX8LE2226549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc755cbafe709ae302a0a2572a42fd1f2a70d0eea398814f82211751105bd2d0e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX89G2383393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db12485370b301a0c920ff78d28f81c26728b60a7196abc1eb51f1d9b385854. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GX5MX2340521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c4b8913be43c2aea4ea59f937fc56d2a523abd36e6109198a16f33090120e9. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GX5MX2308630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db12485370b301a0c920ff78d28f81c26728b60a7196abc1eb51f1d9b385854. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GX5MX2340521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c4b8913be43c2aea4ea59f937fc56d2a523abd36e6109198a16f33090120e9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:00:21Z), 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/GX5MX2308630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9c70557af78a521f0b7ddff482c05e20f1fe5f774b880a0f45768a44621c8b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:51Z), 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/GXBDT2450723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9c70557af78a521f0b7ddff482c05e20f1fe5f774b880a0f45768a44621c8b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GXBDT2450723.