Gumm is a surname. Notable people with the surname include: Frances Gumm (1922–1969), better known as Judy Garland, American actress, singer, and vaudevillian James Gumm, Australian explorer Jay Paul
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 0x85a3aed4781a236753591d9c224c9a4bd4daac9b372a53843a0c3436917eda29. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bbc11f5-fa5a-4cec-beb7-5d5cc14c682e.json and https://artists.proofprofile.net/proofs/artist/5bbc11f5-fa5a-4cec-beb7-5d5cc14c682e.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 0x41af3272200de6cdb3b7f73cdf98a27727fee49569a8cbcda6bf3d0f61c02db8. 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/QZK6Q2305481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb333c01d88ad93ed4420213f2e958a88b450cae13a569e28a6dd1ff97e7c1600. 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/QZHN32301236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79df64b21431b10386689ea0ef859d48eab90c96af6da6909a05d848f8f18951. 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/QZK6Q2305482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cdb90e1a117a24b69ce9cd50508664d69a88a8ee53edae2399bb484612c521. 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/QZHN52322483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf96344a334867cc0ac682869b4ae3cf9d6f9a3e056156ca2d21624a8a29996e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6Q2305483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba6a85056476fef7c565cca029a591946ddef1366ed426da3cff97880248010. 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/QZK6Q2305484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9fe8e122e272f144b7c9cd94bfef7931330303362298e25b29436c13ed3603. 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/QZK6Q2305485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bed17949a41275bc3cca0312680fe05594582b7d8f1598077256852925bf1a. 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/QZK6Q2305486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cdb90e1a117a24b69ce9cd50508664d69a88a8ee53edae2399bb484612c521. 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/QZHN52322483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb333c01d88ad93ed4420213f2e958a88b450cae13a569e28a6dd1ff97e7c1600. 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/QZHN32301236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58cebe7c1689ef0ae6fe073827e35d11ca4ebf0f884c7e01860189212cedc5c. 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/SEYOK2018238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe615d75cf5d944498661c2a09d6aff593800639e7b90585b916013468a6faacd. 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/SEYOK2018239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe571afe34f88adcb5b0b5ea1b72753f88662f8ec2fc80653e26a38e909d650e2. 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/SEYOK2018240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c56e4daec786fa4878813688265dbddeae39fdf130455f7e9e19dbfe129f3cb. 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/SEYOK1932090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6504be70bfd77e92b1834ada941e3f6e673565991544dc88cf6eec9053991d91. 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/SEYOK1932091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eb94eaa9ea83007f1a675c49ace2817d3ae80b7bd189a29d0f762b1930c6b0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEYOK1932093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbba6bcc4d757208fff28256f262d26179fee66bb1d3c04172e9dd7fb5bef03f. 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/SEYOK1843734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa924f0883508faf7e0b97ab2a79d19022e28834ce89ed8d76fefbca11c28af3f. 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/SEYOK1843735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0687d5df4a49097845fb6c3b533a4d9a85b780fd543fba21223ee8e41857de5a. 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/SEYOK1843736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a2d53edd5313afea879e7717ba105800269defe50474f9e8e6d3aa98a2a2a8. 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/SEYOK1843737.