Alexander Glantz (born January 23, 1995), known professionally as Alexander 23, is an American singer-songwriter and record producer. Since releasing his first string of singles and EP in 2019, he has
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 0xe7f64502c307d0dfee49e323a9f4803a0c0de384b1a69d01a013ebfbedc7ac34. 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/61bf2068-3318-43a6-83fc-1117bc269735.json and https://artists.proofprofile.net/proofs/artist/61bf2068-3318-43a6-83fc-1117bc269735.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 0x50cf2a7f2cc54f20ac18807f08cfddd7cdbfa399052de94f25033805882d1219. 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/USUM72003369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71e18aaae388347a03ea39cf67986b9d941c5a7fd65cba53d76f81b5f638d96. 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/USUM72405346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67d06ed65fd740d850a2554625368b76b8579ae63dc7fcd7d05868916b9acfe. 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/USUM72309902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9f5995dd7ee894657fa891e182129536387f8636cdb305aa8254c5bfb35886. 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/QM24S2403147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69645d393d15380fba4972bc825bd9ddd1cf90761ebedb97ae876d3b2526bdb4. 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/QM24S2401634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe638bf8eeb4db090fa70429c304ad9f1d8eb8573211aca2e07913cdcf71d56fb. 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/QM24S2400595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541eaf91e09b572ae5085c75a679c76f9a0645f6a03d419b408c7315555fa0f3. 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/QM24S2400289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12b973ad96cfa57c6e492303f44d2b87df3899bb457b1693a1d68fc0e95ab4d. 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/USUM72304327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c3fb0642958db5691da2dda190ba33d93d99cbdd5ac065e50e2808fdadc53. 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/USUM72300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44386085071afa3eda6cb61b763f4ee312fec8651287c45b26d984fa18c27e8. 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/USUM72222145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10375401c9ccca5c3fe8011a3575e4f705927ed3e79e8e047f160d46e0c744d. 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/USUM72219333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b689b6dbcb09a9c8d65bd46d470e33d76d3dc36b9e518d61019e2c595d25356. 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/USUM72007268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6ec293dfc7f51ae6bfeadcb5d4d9520f04c730ad7ad298147354e37e1d2918. 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/USUM72100547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d5c8efadb0986ba4d941970ee422641f48bf397a402a06a2ba2ef3b9f2ab8a. 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/USUM72019136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3537220b61fa774d60fc901c6628b3d2e74065a60609df4ace007c25c6a3f1. 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/USUM72023066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d797271f04109566d60fe294b78ebde9da71011606fbcfb10e06c66725db9f. 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/USUM72014095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b4d7dccbaeec08202caef126e4789ed114c88349f71b7187c483f05ebbcbb8. 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/USUM72101407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe24d5b52eb1569db3aff4674906123c96e7314d4214e3ccff8f996bd44d37af. 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/USUM72101408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b358367aaea741c2cb5a072263cb415078095d48b3d3f6eed53f81ca512b7fd. 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/USUM72016380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab634c03a9c4053428707662b778ebb37de74ce701ed319cb52e089e6b417f61. 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/USUM72101420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc543f425e7b39dc81a0e102802fc6a60ec58e7a9a80e1f28cc7d0078c31e801. 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/USUM72012781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b689b6dbcb09a9c8d65bd46d470e33d76d3dc36b9e518d61019e2c595d25356. 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/USUM72007268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdeae359b87c5d27585826fd95c6a811000159cf7d5cc75711089c73a3b0307. 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/USUM72004812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce6b3bc79e2d0c7efb4557ee66b03f391b7de9a9fc8f6e618a77b52ab97e513. 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/USUM72001678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06776f2df20544bf52126c79caffa8e961d6f7cceb123d67da6acfbc3615fcac. 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/USUM71903600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf3123f2a76d6848c2212ade74571af3b226b276a9768f0b85c8a677bf2cc3f. 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/USUM71919617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903f932ee67f783e991c175925afa6472c919a2538ac2d34081bc8ec4065ba34. 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/USUM71910597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dad57f1efd5cd00bd2846f329ded5d5c4f481c1fd2e0fc9526fdc5a54fc630. 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/USUM71919691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c702205ad644f10852f196c75fff5ea6fa675bfe57dd11c372ae717e224f5e. 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/USUM71907047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8864af26a881c78c5f55c300d16918ecd4233ccfb3665d5b9d880d5cc1de4321. 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/USUM71919689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfe41ede7c2aff6b47bc5cbf58b129aa5976c110f736668cbdb3a5f65a79fa7. 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/USUM71917562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9994d955ff4882f877ddeb3801697a7d7180b9a2c255868e9e63ad9fcd8355f. 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/USUM71912809.
We Don’t Talk Enough (with Alexander 23)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd46aa1740729f0992cd1c9ab11fcc1f21c007fe709c5ef01f33a8be06a6902. 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/USSM12100400.