Stare Dobre Małżeństwo (in English translation "good old marriage") is a Polish music group. The band originates from the so-called "student music", popular in Poland. This musical style is character
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 0x5e7931a30c02ba5072074fcdc469f50106678cb7c083630931c731f27428cc28. 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/e9f73593-7885-484b-84bc-1328b6d0e49b.json and https://artists.proofprofile.net/proofs/artist/e9f73593-7885-484b-84bc-1328b6d0e49b.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 0x845877925ae0caeb40319b112d9d569578090a5a97b91247e08d214b6119d7e0. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/PLE571500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c935c9fbca6fb6c7c3826cbdf358857f9fbbbecebe5b1985c262420d0a251a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLE571500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606fe564f02fd6f1a64ccfdbbca1d64f6fe0881b1c5ecc46a8d89b11f8b54a77. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/PLE571500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4077cebabf411ab56dcfda7008f037933148ec4161be0376af33b6e58decc96b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/PLE571500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961feb23db2415d3d20bf03f26bd41136461d3a73f2e1a2bcb1dada48ad7c45e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLE571500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3c84006e0ed3bd9d333b5c754efe1741681ca6087ab76a6b76e79163c4adbd. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/PLE571500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3545922c3b2fe63635cf8146c73d2e5881568bb444e3a953ad447558a5278ec. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLE571500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49bf64dc6e370a86f4cb2ffa00b64eb54b79c84a91e007684108c81adefa4f5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PLE571500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240afde8f89ed536d8e1bb1f9a3e3069a721fd4dc9356fd2606d720919283c4a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PLE571500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ca83ccb140f766d7cd3e7a298b100bb08ed59000f8a2939f440063fafd7f8c. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QZTAS2101299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282625df4ce388693e60b01ac0677940ab9eb390d8a6443962ecbdfe9cae50a0. 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/QZTAS2101300.
Lubię szeptać ci słowa, które nic nie znaczą
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501d8ffd7b437e07e6db1bca1ad3f6bc6bc6fc054568cb74c4c5e86b2efb5c55. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZTAS2101301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb87ad1b91b3af4c6368e6488a5976d975753c3f289bb8881580cc67fa8ed143. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZTAS2101302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4094cd3084639ce38f8adf30acdea6a6653eb35d44bfa8064ab5093f271430. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZTAS2101304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206692f8e60a44be1dc12cee6222789595c8c03458a36d1c0ad8286497e5a50e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZTAS2101305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785208bf5a52ddd29288b42c19d9c1d2488b33ac0a58f9a16ea6b5f39f7567a8. 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/QZTAS2101306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82433b8cbfa1492badb22cff60fa2073024406808d0cf0c5c239112813b8ad0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTAS2101307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9dfc0a949c24fd6ecff3be7b5588df24925c28b15b734a0a5f06b86a459593. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZTAS2101310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7c23537bc275fdbf021102c60aea3eac571f4045a6545e7189888408fd7086. 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/QZTAS2102396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce3bbac7fbaa41ce6ecbc4bc7d605e95efe98f3a3e356d47cb29e2a846074ac. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTAS2102405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84137ebf0fced4eaa4f5e57cc8853761a1d1fe622e9739f5f9615af8c85da939. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZRP52136707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc744169e8f2f68748667b598d3193b13c167ed4f276f1c59de88397ab5ebcf5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZRP52136710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4eaf0d1e696d6999fd677234633d4bb2d3f2d0a754e9c40a914ac50d0eb7951. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZTAS2160575.