Poom is an Estonian surname. Notable people with the surname include: Markus Poom (born 1999), Estonian footballer Mart Poom (born 1972), Estonian footballer and coach Paul Poom (born 1958), Estoni
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 0x0b6086fac847d8308d35fba999f7765abd15491cd2a08c58c74a5df4192020f1. 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/b43fc04c-9ca9-450b-8111-e67a54e6cf11.json and https://artists.proofprofile.net/proofs/artist/b43fc04c-9ca9-450b-8111-e67a54e6cf11.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 0xa7aa258d1cc157926e6465a9587a40701ced4815916e6049e03b68a659c37238. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:58:50Z), 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/FR1MF1300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81ad15cabb32b36daf4a9580b362b58c39953ad1e950caa4fcb89954b60bf12. 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/FR9W11505255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031d31bb74587301d7c1f9b42d893eac5a2920b1b38969f72c0e5aceebde7642. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W11505258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71de31ab00000baf0519a2ae37de69d97c6664a18da12f090c9286c4693d424. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/FR9W11505256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dba5e380b6591777f2a7efd09020dec1a0f4987d51db50a636b81e8d2350a6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR9W11505259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc5d7efb82ad8e0cc0f99d2eb47f38372361a488769c633f65adb1f734bc47d. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/FR9W11505264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf457a78c39ea6f3c14d6a5c21754593ff681ce46a7f38615b77aabd1db6ba88. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR9W11505262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a2463c238941dbd378fceaadf526d9f55b3289ff1f5d5157658b4d3b898a13. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/FR9W11615745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6441dd22b8b623369cf164f81d4c3aa0679d632a4aea260ed43c0dfcc545c54. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FR9W11615744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5a4c1ef5aabec06e43219aa3e20131a338bbfd79290a4f0327fef5ae765a3c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W11615742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11a77b6e812177f707da7a784c6022a6a37c2ec206b4eaf6902929465011ef7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:19Z), 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/FR9W12335427.
City Lounge - The Deep Session (The Finest Music Selection: Deep House, Trip Hop, Downtempo, Cool Tempo, Lounge, Electro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a69abe55a1e0d161f72f9351defde71fde8569dc905211f05adae4b4170d74a. 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/FR1MF1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ac2d2a494044c98e2332cbffed76d72528ab096216fec49fa3b2f59fe52998. 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/FR9W11505263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81ad15cabb32b36daf4a9580b362b58c39953ad1e950caa4fcb89954b60bf12. 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/FR9W11505255.