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 0xf10459448b41fa319b653ddd7bd873ffc5af9d48e9af7293c77bd5cf620b160d. 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/e591b335-7af0-4991-a7c4-5810b13eeb62.json and https://artists.proofprofile.net/proofs/artist/e591b335-7af0-4991-a7c4-5810b13eeb62.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Pozytywka, Muzyka Klasyczna Dla Niemowląt I Dzieci Do Relaksu I Zasypiania Z Najpiękniejszymi Melodiami
Śpij, Mój Mały Książę, Zasypiaj, Mozarta
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 0x707af076adc88632944e92c7a10d6ac5ab53c572920550aa7c349c6a5e642e83. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900814 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f01df4255675f44aa1301c939bd0abbe5653abc8ba13f15143ba1a6c84ee05. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900815 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a93d8ab2a430efe271f800b50f694ccb739bc0307598368f388db649786567. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900817 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bbdec15746d8040dfb9b835aa6136a762abbb1f51f207722d41e5492ff7ee9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900818 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65f922f8786c5e8098bb6c1deafa3c0574df50be9b96ef49fc8629a71b52514. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900821 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edcdc9ef0b3b377319057a8891a1910b66a731a0682d24d34a6260d6f30e1a8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900822 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3c4519457a861acb78400b7ef509f0119d32470c4f3b398a2c4ab1d4311b77. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900827 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ecf3a1e88afb79a4b9728a3ce37a90eb27260dddbab5828c3cee0a5d9f1a0c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900831 — a six-check JSON result.
Kanon D-Dur (Kolysanka Dla Dzieci), Pachelba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd2a74fd1c61823e27658c8d601b7d87edd6959de62d4aea9df2eecef2506b6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900832 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef426e789f20397afb3aea0366fe2ede68cd1f94d6a073c9307e4942cf8ee78. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900833 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66deda6afb5ce29dca65cc5933c780fe2bf58824264cdca3b75dd7f55af01854. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1900834 — a six-check JSON result.
Klasyczne Pudełko Do Zabawy Muzyka Dla Niemowląt 2
Najpiękniejsze Piosenki Filmowe Disneya W Wersji Pozytywki Aladyn Pinokio Dumbo Król Lew Kopciuszek Piotruś Pan Mała Syrenka Śpiąca Królewna Alicja W Krainie Czarów Królewna Śnieżka I Siedmiu Krasnoludków + Mary Poppins Dzwieki Muzyki Czarnoksiężnik Z Oz
Chwała Boża Pozytywka Dla Niemowląt Pozytywka Baleriną Z Ukochany Polski Religijne Hymnów I Pieśni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a4f35002be9f49cc5cf4b72bc0653f3e1bbaa2b27bfe9a4ab8a4415bf2bfd9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1901027 — a six-check JSON result.
Litania Do Najświętszego Serca Pana Jezusa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd78b40948f6a24149994fe86607b44239e274e92bf9ff0c94ccc054629e2e0. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1901029 — a six-check JSON result.
Najpiękniejsze Piosenki Filmowe Disneya W Wersji Pozytywki #2
Mozarta Dla Dziegi Delikatne Wersje Pozytywek Dla Niemowląt
Koncert Fortepianowy nr 21 C-dur KV 550: II Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768aacc3403450edfb3fe805abb4b0e714b604e1c270da82b9246b93a40fb866. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL1901112 — a six-check JSON result.
Arie operowe dla dzieci w wersji z pozytywką
Bacha Dla Dziegi Delikatne Wersje Pozytywek Dla Niemowląt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552a6b6f7731fb4ee21cd2af5dd817aa623ee15e9a37171b31db71af29888235. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL2301480 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928cb6e7c945128bb6893a72cfd005d65621ce0a61c7071db39d55a6d7591c51. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL1TL2301481 — a six-check JSON result.
Beethovena Dla Dziegi Delikatne Wersje Pozytywek Dla Niemowląt
Chopina Dla Dziegi Delikatne Wersje Pozytywek Dla Niemowląt
Pozytywki w wersjach ich największych sukcesów dla przyjaciół KELLY FAMILY