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 0xa6203959ac056d4f11e7cce42b3e2b855d7dddfa5cf8dee0ad45844ecfeab70f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4076f54-a967-4478-a23d-c98dee7c029c.json and https://artists.proofprofile.net/proofs/artist/d4076f54-a967-4478-a23d-c98dee7c029c.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 0x3c842a58e88d39dbce5fe22f01ab50c79553b60b07022617bb91196ea51f0eac. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TRAJJ2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f4fbdef306fb2111b1c4b9cf6c7beae6ce10e037ed49c31a2a3790a305d140. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TRAJJ2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca56989ac570c87ec9b95f0ef24dc87b791e40cd812b974ffb05f7169b04b75. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/TRAJJ2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea2db0c3a0a6a3c9d16e4d252ea874d273e18a5928fb4e07a3ed7c24602af39. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/TRAJJ2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8332e0b79e15a675086cd8b649e09831573aed5f649ad55f55f3f8ffa36b5b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TRAJJ2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95e6e7faadebb03ca63519256ea815c6631c334403879122572d7c2e35e2b15. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TRAJJ2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f67aa9c11c56692bb8c50f171b029571f7e59676c8ae03d47c5322bad23e24f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TRAJJ2000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86e37bb637266dcd18260538ad169148e67afdb08ec09dc3183cda814f3f59f. 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/TRAJJ2000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340e92cae5ff160d73eb84b04dc2300f0553310fc4d7b5a94a58bc70479ab36a. 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/TRAJJ2000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82ae9f13621e7ed10219993580b8edb804d69cb49828364f964344ec8b4adf0. 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/TRAJJ2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fde51325ab25dc444497639feb60d9c2dab61862a7983dd35070331711fff7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TRAJJ2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9a6ab104c6e58e5cb8561d3d376333d45d09747829c894a8d929d324510786. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TRAJJ2000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43818594ca3c028f312e9d5f8f029d3ef1facbd6fa2cc7202ef695b7960d6e30. 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/TRAJJ2000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf397c043c7323675a1554bd2336b280a0121e0795535d50a8580f400128c818. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TRAJJ2000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfa07e7264f62cbc9985ab3aa56489faf7402e779462677abff14b3f9c1bc80. 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/TRAJJ2000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48500001856e40349a1335cdd3e41ca47c7d1330f2ed1a6cd7f2552cc431f59. 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/TRAJJ2000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf005fe71cbe58dd1294a4a42ef7411af7e76d6bcaf1dde6010b43c8593cd7e24. 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/TRAJJ2000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b55db8fdb60545ca93411eba6137f880c2c9a2e498866aff1294ec78aeb7816. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DGA052440243.
Arı Vız Vız ile Hayvan Seslerini Öğreniyorum
Otobüsün Tekerleği ile Şekilleri Öğreniyorum
Meslekler Şarkısı - Ne olmak istiyorsun?
Mini Mini Bir Kuş İle Mevsimleri Öğreniyorum
Tonton Dede'nin Çiftliği'nde Hayvan Sesleri
Zencefilli Kurabiye Adam - Yılbaşı Koşusu
Parmak Ailesi İle İngilizce Saymayı Öğreniyorum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90a25ae68ad0ed78c55f4d32c5c61e71224698a71fd5d8ce0f68e986555e725. 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/DGA062433543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd568cf7a112ba7a9e9e6988dd5d3900e9038affe23293721e50c21de4c24837. 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/DGA062441214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7b0d2688d3d3dc25a1b9cd29663e2128294abcc6761d855ded9f97a1b976e7. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DGA062490848.
Mini Mini Bir Kuş ile Sayıları Öğreniyorum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69e9314c37d9557f04ee36cb84bfba881b8843e46a8d985bd7517f66a423c8c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062490019.
Tonton Dede'nin Çiftliğinde Meyveler Sebzeler
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91048b1e35b5587bc8aaf2bfad6209f9fbbffe6e0b0b703557502b77a5dfaa6a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DGA062494383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37cb3faafdd0333a878a7ad01be3a110497ba5f1e36837137f4df2761dcce01. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DGA062493429.
Küçük Kurbağa ile Hayvanları Öğreniyorum
Mini Mini Bir Kuş İle Vücudumuzu Öğreniyorum
Otobüsün Tekerleği ile Sayıları Öğreniyorum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec2837881f102e6653a1a4c35c3197dc12aabac9381330cc0eb209199f2c2f9. 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/DGA072491612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfefb00ec66ecefa02b8f5579ac44fe68c3a71b54c2344f281a0a1fd325a6f0b. 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/DGA072491581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eec4834305bc8f4b3cfbfd4cc1978e7dbd925a932402bc4d8ab2eb8342d6ccf. 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/DGA062440685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd6efe91adc96073b742f623d96c876bcb238b193e2192645165967c8f520d3. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DGA062441210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239bf9ba7675213cea4a5a4fa57d7a737b2721744171e102697fdd87e9aef575. 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/DGA082480009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb15962be0ae61575a2b7a329651940f38e44400dd8ef530c99dea44644ea3f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DGA082476777.
Tonton Dede'nin Çiftliğinde Sayıları Öğreniyorum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac53061dd7777cbfbaaf75f7697ebf0d127bb69fc81f1bb757782fd0f03b632. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/DGA082476747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a1ce5fc663fee2ec540107712a6c203969faba00904a75e7bdf2a832e84f92. 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/DGA082488909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4007707f37fe936136f8711aee4904d5c44f58d159ab3e6d4643c0bd50e717ea. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DGA082485097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c728be6f4952b5c246364f759ed6c5e7a402e250a3d547090415547d25e278e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/DGA082487824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb0a85cd64a4cc0d6006e50f4e344c4b685ae87be45eaa3623090296638472a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/DGA082479482.