Maria Tănase (; 25 September 1913 – 22 June 1963) was a Romanian singer and actress. Her music ranged from traditional Romanian music to romance, tango, chanson, and operetta. Tănase has a similar i
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 0xf3d573356f5898669fb871cbf45f7a7e4ed9c36213243e0d17b5e3237cf4b682. 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/b7486c3c-0598-4f31-8fa8-3d61bbf5030a.json and https://artists.proofprofile.net/proofs/artist/b7486c3c-0598-4f31-8fa8-3d61bbf5030a.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 0xd08a7e4f881ccbaa7bc04ecdeab68256f241ad01463775828aeeb462bbfe3604. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:12Z), 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/ROB010800118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4078de7a468ae21312ee93f752c9f1c09e600a6e5044300d55005c6f68aac34a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:48:51Z), 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/ROB010800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e6d6594e157b8277c180d4504d684cc8b9ac58ca953842bb10dc3661756305. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:37:17Z), 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/ROB010800139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed1a6def2547472fafe24182a88b166a569602494f4fb5dc6f00ddda4361dc5. 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/ROB010800629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb04eeb96562051c5dce12a0662e9c2019447129b9df84a2181f2d1f6ea3e1a9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ROB010800630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee23a5221c287a95d266cbe388af2ae5ed90e52ef2eba84b3c1890ab6cd19e5a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ROB010800635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc203e178f3f3ee3aac4d7fa437d571959e26c1544883a003f53280903118c58. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ROB010800644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20cecc7e82d5dc476e1537fa79034fb6f91b1078d2ead972ecd7fb97d9b12b1. 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/ROB010801032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4151d5256e6b5f404100b91dcb5d6f90caa72ef7e00261773e7806debae294. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ROB010801033.
Maria Tanase, Vol. 1 - Folk Romanian Songs, Recordings 1936-1939
Maria Tanase, Vol. 2 - Folk Romanian Songs Volume 2 - Recordings 1953-1957
Maria Tanase, Vol. 3 - Folk Romanian Songs Volume 3 / Recordings 1955-1958
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079cf1c07fb08630f3dbe1855ae131af452d09db474dfa040469b931ba998051. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR9W11311580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1598fb07eccac6385cc3a65dcb8a2feac91a581fdc640860d3cf17763969150e. 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/FR9W11311582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c45a02aca6680a1afa884c16f283d4bccde85c23b05a6505f2b39902f71e5aa. 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/FR9W11311591.