thumb|right|I Tetras tou Peiraia; Pagioumtzis is first from the left (mid 1930s). Stratos Pagioumtzis (; 1904 – 16 November 1971) was a Greek rebetiko singer, also known with the nickname Stratos the
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5f16ca76129c6731fefab10d7e421e355b447e839db2c0bb94018d6372a664. 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/477f8262-54c8-4203-8853-c58be598164c.json and https://artists.proofprofile.net/proofs/artist/477f8262-54c8-4203-8853-c58be598164c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f79bd191f8cd8a158d08d28736c1f2a05f72f8ef5416bc63a664f9a07615336. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GRE014100005.
Stratos Payioumtzis (Pagioumtzis) Vol. 3 / Singers of Greek Popular Song in 78 Rpm / Recordings 1939 - 1940
Stratos Pagioumtzis, Vol. 1 / Singers of Greek Popular Song in 78 Rpm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201e6100c609161734ebfb5d0effb6d88f25d51a549c33de458681d53627d0cd. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GRHR10532010.
Stratos Payioumtzis [Pagioumtzis] Vol. 2 / Singers of Greek Popular Song in 78 rpm / Recordings 1938 - 1939
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e395941705b2d6835460a17f87bc097a3abc611a6efea5d19c6ee9f40bc0858. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/GRUM70603479.
14 Megala Tragoudia - Stratos Pagioumtzis
Stratos Payioumtzis [Pagioumtzis] Vol. 4 / Singers of Greek Popular Song in 78 rpm / Recordings 1946 - 1949
Stratos Payioumtzis (Pagioumtzis) Vol. 5 / Singers of Greek Popular Song in 78 Rpm / Recordings 1949 - 1957
I Magissa Tis Arapias (1940-1952 Recordings)
Arhontissa (Songs of Vassilis Tsitsanis 1936-1939)
Perasane Ta Hronia Ta Palia: 45 Rpm Recordings 1960-1964, Vol. 2
To Laiko Tragoudi: Stratos Pagioumtzis, No. 1
To Laiko Tragoudi: Stratos Pagioumtzis, No. 2
To Laiko Tragoudi: Stratos Pagioumtzis, No. 3
Stratos Payioumtzis Vol. 3 / Singers of Greek Popular Song in 78 Rpm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e62e9324e3fb2c6b992c4239ff63cd16dbe4edfd987b1f1b3e082fad197cab1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CA5KR2340084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad835410b47cc9459f1255ee3aebc6ca765d3d5fc452c80731930a7800b93b6. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GRE014000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6861aa826fbac770d4c945a9965d49afeb277d0e59a997630781360624d5b9. 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/GRE010600790.
Mia Nihta Sto Pasalimani (To Pasalimani) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dda2d606d6c77452f584e533901a23e31d18e29798c88beb6c0126159b11d44. 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/GRE010600792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc99e4fbd77271f11ed7765c9999232eddc179181253a858b000a7b9c0e39c43. 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/GRE014000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783dac460f9412a2586c791dfc3afd60a38090ff6ad14c53bca0d65bbb18f3da. 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/GRE018400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191cd8dfa86eb72b1f133f5612bead60df83264a9762a35d6f9251d54ac6acd9. 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/GRE014600067.
Se Fino Akrogiali (Paragouai) - Remastered 1994
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841f3cd66839abb1b5fbd173c6f629511cefbeeb0549449e8b98642345978bac. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GRE019400627.
To Fili Den Ine Krima (Na Pame Gia Ti Voula) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3942b8bd6204cac81c5e5d11c407e0dfd9bd58243ab6f338c5f20c8f4faf06. 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/GRE010600794.
Dodeka I Ora (Tha 'Rtho Vre Mario) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f844516789f4a9482e3784121413dc708cf278284cf334098023e6bdbebcb4f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GRE010600795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad44ceb14a66163b96616d42f8294f6d1a09978439ae58e59f16e911222f4ed0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GRE015800177.
Megalo Pono Mou 'Vales (Mihanika Me Berdepses) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18e902d7658dfc125495f8dbab00e83a349aee1512e924bea06f0a23a14e782. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GRE010600796.
Sta Trikala Sta Dio Stena (O Sarkaflias) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e01bb2b9765292a6c298223d366d132a0252a1490a3f02173a9ce90e2c2329f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GRE010600797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88805aee613f85fa67e7fac3345e394ed0492dfa332259a03fdabb84ffb48865. 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/GRE019100390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57046b9e8013be7c0f228b7477287598753fda2ac17930978d0e21619fe989fb. 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/GRE014000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61112e5034e9b51745ef4bbe0bc296270ad683f63136438fa7a02fceae22a4f. 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/GRE015800174.
Otan Simvi Sta Perix (Tis Mastouras O Skopos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc37691f4d28bbcb44732a4c6fa45bcc1bb0266558cdcbdde7d7aa0577633c8. 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/GRE014600134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2ef1e6a6ada8413c949864ee5df89bddc97f6ac78714bb04d8e1f9fa255bb0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GRE014600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646432513cbd2e594fb28c7a5df12329cbfac99adf841cf293756cbc37f99e35. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/GRE014800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8af0c92167107414e78c3f6975f80e68120ff9e8c0f7ffebe1cf877b7ccb5e2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GRE014700008.