A Who's Who (or Who Is Who) is a reference work consisting of biographical entries of notable people in a particular field. The oldest and best-known is the annual publication Who's Who, a reference w
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 0x06feef97c6f9fc9aa9480efd44bd6b7431e00627042b28ebdc47f7faff5d9eae. 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/df9f03f4-3107-48cc-b756-9de0f2623a1b.json and https://artists.proofprofile.net/proofs/artist/df9f03f4-3107-48cc-b756-9de0f2623a1b.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 0xca71dc8981683be79e675a1b29a953d7c5f75abfc88aeec9e6e572569bda9ad0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:47Z), 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/QZNWT2425917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa15c09c2ea4cfbaa9d60239e1cb367dad92fce3efc8e1690358e1b07165e89. 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/QZNWY2417337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107546299f5c741ac024dce40b11cb16bd6137c0b14a964e87b33cf7bc51c98f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:26Z), 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/QZNWY2417339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2389b18ba51179682e7520dda7dcd8f3bb29d5f3c339c7643a8e6f423f759d0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWY2417340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae10f2c5ec94607d6b82ca0bfd7d633725e8c341594591e8c33becf0a289d0a6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWY2417341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe042eb8c9d2837ef6576b225be99f54dcb0497f074b134db064eaec59153f0fa. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZNWY2417342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7dc9bc5be17494c9f669d310e179a8ad5f74d7980a02d2143ed29f0740e7b9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWY2417343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1362d4b18941fb5426317e28157fd6fef0b2bfb5d8da3714b86dae423e1bf5b. 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/QZNWY2417344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ee7c996abeb5ff1a566c3f0074236fe844f7144afb1e633d734ab18f21d801. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWY2417345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96bc9d55590142507e44bf2f9355404481938f7c7206f59883d6e4bff666ad2. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZNWY2417346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186280599e20dfb2566d45feca3f9f8df252238c360c47050a239f49e15dbe5f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWY2417347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182425c8a3f0b5946a3dde48e77783167d2cc0d28818a0a28817944ad2bc9e9e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:34:28Z), 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/QZNWY2417348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437f83cdea56deec5711640029e7ffd3a1c828fadd90d84c060bc01c1fd07cf9. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:48Z), 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/QZZ772438081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e6ebdc6787e5e2c40ce20b3410b71ac529249f41d2c65e481c8782ae680843. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:36:51Z), 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/QZZ772438082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41ef2051c11eefd41ddc52e8efa726114fc79ddf777ffa4ab0613edfe99efe6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:56:40Z), 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/QZZ772438083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafef4a501bb700ce198bf5727f0f14745863a56b2a5b72ae8ed4915bc90ad2dc. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:22:57Z), 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/QZZ772438084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7ee9890ac4769f8708b3efffd73bb7f8d4781380fa27132976d35c81dc3e2d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZZ772438085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ef06760179859e9ff065317bf007ac63eca30decf9ec76afd4ef6e7e709d35. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:28:22Z), 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/QZZ772438086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182333b4391b769b2172d4be5c49cc15c159416544087dc7d17a143900319388. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZZ772438087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dfb843349e138d168c617a4aa65c6d66c5558e7aa4fa544e7844dffa8d1b76. 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/QZZ772438088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc135e4ef88f75c6d56294ea634951399c6c6e770db1f8d901d3d4ff2cdd91b93. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZZ772438090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9b1cfdff872125375504f07c0a67bf7259d73f5689f0640f0e9afb4edf0214. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:43:03Z), 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/QZZ772438091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb6fb8d18d3825965a926fe4db853e71144dea59a6dd69241802bc43ae2070f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZZ772438092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa674f5460741863b6de75f9a3543f45dbce3b9535a536c0199b81e62d024f3. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZWFF2468755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a1550a9d0abe0f35b6c8a80154f62c55e3c10a30c1933856eff97b552a0ab9. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZES62529926.
Angels Of Passion (Angels Of Passion Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bb69185a92ce46e8f5202252b3a21e7270fabd6af038bbdac06a3ad79f5080. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZHN52504834.
Till The End Of Time - Instrumental T3 Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01000abc331bdf7d060221144d0f3ff59779f5afb736e2b5a2f734a55b153425. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZHN52504846.