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 0x4d0c4a45f63d1da6e8fb50f8d6b02c651f2896426374cf0869b897b290a97086. 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/adde4938-d579-4e61-be32-8ec1a4bbaa8f.json and https://artists.proofprofile.net/proofs/artist/adde4938-d579-4e61-be32-8ec1a4bbaa8f.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 0xfd44f177f2e6461e428ea7c1088f73da7801d2dffd7a856eb8b40050e455e77b. 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/TCACC1465148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb89b653ae2fe8e604b574548ac70e33a9bdd571cc7d5c3a35a6392eb33c3ee. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:36:38Z), 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/TCACC1465150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b5ba3528a24d5bc3d8d1ceb1b37859221e8368e0cf4213532b51f16006fb4d. 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/TCACC1465153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f046e8dc79caa5ab594a74aa0fad8dbd34a494602bb856f2ce8f216b200095a. 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/TCACC1465168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfb289e06309e491dbb2c5ff07d16c487201c9386119c9b1f60904be4c42add. 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/TCACJ1575063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb34e8b7b6fadbfae28f5b41d90800ca9ed54cdf91751b308fe9a6cde3709b09. 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/QZES51918622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b13926e8ff051604a1ec8e665fc10945c1f9aee924df80645f62d3591d2b48a. 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/QZES51918624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44f8f0687ec954dd0a12539d4e14ab47184a742b3bffc5c812156fe434a6f9b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCACJ1575061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b903f82d87124279825778682eb12e8e37e1f16f402699d24de6589d645275. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCACJ1575067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ef7849936b9406fca3367eef69b716cd59060ba0c35c163b4de50739f18c89. 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/TCACQ1618234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481b341d0e3af23de3cac2cf6f0ee6f089d2ab652f3c9a8fa5195012453111a4. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:51Z), 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/TCACQ1618235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1daeb5c37fc14c840e3cd7e5fc92f8c1d3f957a2492df99c6fe479d70cb7dc. 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/TCACQ1618236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628b065f5546cf28f39b4e749c31237063213d9618a3bf0d08653144a78206a5. 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/TCADO1808895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e58eb275b941c84694d23132c31a2db9a92c5df257e3f80129783b43e34801. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/TCADO1808896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99a755814dbd034f858e4e67b03718c8506eb9529303abaf7c754427e12f355. 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/TCADO1808927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb34e8b7b6fadbfae28f5b41d90800ca9ed54cdf91751b308fe9a6cde3709b09. 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/QZES51918622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b13926e8ff051604a1ec8e665fc10945c1f9aee924df80645f62d3591d2b48a. 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/QZES51918624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66844e45f3217b08a27ecd0fcdafa03def31c1a98858d5805aa5e20adca96118. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:02Z), 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/QZNWT2083880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2071aafaf2b934e25a251c7801c3be7e2396a9bdb5db4ee97a58ebd98424e6e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNWT2089655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1910511ecde045a2be6c044babd16830b34ee3cd3278966097e19e774c1ac8ad. 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/QZPLR2125792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2ce24fb8dc16f2383e641d85a134aaa4a4b33c289671d6cc58de714b1089d1. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:08:04Z), 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/QZMEQ2202631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5b66ce5fa62a8fea99e93996b6eea880f6af98c1d407a6078d07bad0170f39. 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/QZMEQ2202632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8db96bc99571c8082f458ac5c63b2782a759e511dd77af44552005be1c1288. 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/QZMEQ2202636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2ca37748e2573dd288ec6ffb16a4d9892ad973b9ce2c1daedfc22e82c4a97b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZMEQ2202637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4517704e62141e3dcbf01397898785de9c329866392757e89b5b4f6a96aa650. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:51Z), 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/QZTBE2422952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4517704e62141e3dcbf01397898785de9c329866392757e89b5b4f6a96aa650. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZTBE2422952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28af204ec3f917d5708384d4244b470e65ddd9ebbffda29d0b8a9631e69c23b2. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZMEQ2572909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bc65889cc1cabd56e0610abe104da5f92116b779bdd8f4c6ef17f5c6e1e2e2. 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/QZMEQ2572904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9795c548007f6216cbe681052e702dfd561b47b61b77293f569cd9db5000df. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:09:29Z), 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/QZMEQ2572910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de655743b93decb851f5f98a086ba829f28bc4c34f38b0fd3309179a6c890f8. 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/QZMEQ2572916.
Show Me the Sky, Show Me the Moon - Nightcore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27f3f4b96dc6cfcc0a85d6d2af17ca476179e23be7a5197e62a11401ecdb907. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882228685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd732dc83e3408da154f966e4679c06922bfb079584b0a50d57102efcc449352. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882228688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c21dd6473bcf3dce62995d9798d0a1d8323420db3458737473f5d1d6733d5ef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKZGC2401593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c0e746cfb52dd2eb2846dcfd9f4e437877e6a6edd6ea650839752939afb069. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKZGC2400689.