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 0x9b3dcbe9d89dd872e4ee21e2cd3f5468bba8c5042b3551a293e288ceb720da9b. 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/7d2851f2-a6e2-4f09-b9da-689059127efc.json and https://artists.proofprofile.net/proofs/artist/7d2851f2-a6e2-4f09-b9da-689059127efc.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 0x0678937730dd9adb4f6ddd133d63e90f4b76a11384672d7cf477b000d6b47660. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:45:42Z), 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/QZZ7L2418986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530453fefe37bd9e7a313ad31059fe966a9bdec5073e7064b5cb1ba31f253497. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZZ7L2418987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2bf0925e8b694f3c7299ffb83d2883c688b4fb437204c45df7a739d78f5eff. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZZ7L2418990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337b8e19c462899962761baded24f94e2da8db07dfacfa3587984d113f9d4699. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7L2418995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de28d1a48c292b407d3592971ca79692bd2df3fc67c310d61b28bb91f23e3ee. 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/QZZ7L2418996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e0985da05624d770355125abcf8082f64d18b1e61be75b275aadf29952ab12. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZZ7L2419002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5646a6f915474a22f2de9ae38fa6314a65236b41901c3383bc69f862027eb3c3. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZZ7L2419004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a9385e180de382e32808b8b503637222f829a644b37e856b553a2acd86f759. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZFZ32576860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10b23cf7bee6798fc8ceef1f0433d5afdaf9fc4b6f161cf43b9bbc2409b26c8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFZ32576861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07de2089b56e1722987f406ba0828001078c4feb0f20616dedc3cedc50f54f9d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZFZ32576862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea1bfab896a2e00117589eeacb682eb36555f1ca81106bb51003d12bd90bf29. 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/QZFZ32576863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6f981e58adb7af48f53d5adf5fe68609f7416a437d4cfe57c0987f100d0f21. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZFZ32576868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406a29114a72533dea6c7aabd6c194f9f745b73a8f6793d23d7cc1a10df403b8. 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/QZFZ32576870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426b17952ebabc14a8f89112bc81d618cc1fb5fe794e0cedae3030a8a21df3dc. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:57:24Z), 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/QZFZ32576871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad483edb1a684cf576d3b4fcb0b591510f13f1c6b8978d0d9ebb40a4a1e098a. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ32576873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ee05ce4e7ca94a11829b60dea27a24a1c404854f1acff1ab2c9393580f344c. 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/QZFZ32576875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eda9066899e56c0ba90b0a1844d49ffaa624042b0859c72cf18a42eb302339c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:33:05Z), 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/QZFZ32576876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedb68eaf26aee842959d354150df7556d90e2fd166a60e25533503017ed5cf3. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZFZ32576878.
Poczuj Święta w Sercu Piosenka Świąteczna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ad0350023030f4676458fb5ac77eda645188e08092a7c3ebd4cfb7a877e4f0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZHN92562899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbff27f05ba0dc1b6ded50addf23037b60ac26d1b0f20ebe80fe9f6d423651b. 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/QZHN92562901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1d99a068392371503dc1cf852545d2750898d3ae48e83bce01c91bd6cc76ec. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN92562905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75df44184d93bae7fbe6f9ad4bce6320b2ece2888dcc5abdd999cf4319c0a73d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN92562906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb765bb01cf800903b5d5b22c92e9c21cf68b40b0ef186549d6264eccb669b79. 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/QZHN92562910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ca01e5eba4a5a271456e156fe487c600ab4afd6d41f1580a78dd2deae5037a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN92562911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ccf131bcacf789ba2b0900fad8fe71d5d51bbf94c6383821da282a3209bb7b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZPLS2594702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dbae9085d865e6acdba3bd805e4708ccf420b9b1c0b5f0f1a1b01a1d09e1d4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZPLS2594705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f636e7b0b6c99d92f00cab17b83208083e5ac4e9477ff9fa308f57b1b9d094. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLS2594714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359d5d596e8a51ef285b8b6165e6f04b640796aaf30cb03f7912470b939785b6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2570554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083805c7869e3fda843ed2794261e3d81d05c95d35ec938e372d1886186a585a. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:08Z), 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/QZZ7X2510598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb254489e817a31650a80a8f5181a4e9fb1e53df045a420ce3d1ce2d7bef4d907. 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/QT6E82593546.