NSC may refer to: Banking and investment National Sort Code, an Irish bank code Nomura Securities Co, an investment bank Computing National Software Centre, an Irish organization National Supe
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 0xf1d2a0f57d46aca6a99e700334a98cce661d9223d761d98b90b143c56e2e1eae. 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/081845ef-8c69-43ea-84bc-2a794158b35f.json and https://artists.proofprofile.net/proofs/artist/081845ef-8c69-43ea-84bc-2a794158b35f.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 0x0b7b6431430520db351b223beda57e3b850df1077441b5cfd31c7ad9fef15c71. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNJV2368516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d552a1db7197aa6e1b86b07f860f6d8324bf1a5728aacbe1fdc5a98cd5056d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/BXYNZ1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b705cf1d647e50562616798b935bebf9231027e4070855e7c5b59af95991aa. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/BXYNZ1900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d381a19eda3270a26a3ab7d20a7b85ea181f0df839281fbfdf9d32cb6f958a4. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/BXYNZ1900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811306b774d3856882d06fcafdc64404763770af698d43763b88623904e8c5b6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BXYNZ2000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7348c19ddced40f6d94bf13b212cea826b80830f5aa05832d72e7fb2864266. 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/BXYNZ2000272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e6432cc510aa5f4ce6d8db52ef5d80b7d27c92e76e64df9b215f0d758523d6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BXYNZ2000242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8c51385ad2ec6e0f9c6eb21383e7c293a540b1468350e51481066a0a11f98d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BXYNZ2000245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec3eada59f739f5c2a73e1633686a23f7a6c172f57a63ade9067b20468c2aae. 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/BXYNZ2000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242f013c0ad42cee85f00d1e7558b0b29a94dec64cacb4f224492305b9f18f59. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/UKXN21919070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd3b376d178d77df3df73fcf8aac73eb34b2b6643b1f7e46824a6ee6601a6d8. 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/BXYNZ2000249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91ecbff0f43785e97f42c3c81e032d0d7594848f47ab05725814b2d68739702. 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/BXYNZ2000254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ff28f5a3ae3072f90bf6f4a780bd6dd819bcc1709da6ddf83c427d408820bf. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BXYNZ2000255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d660b59b0ada6349a210b154504a80a2c5b6d4f4c976d0e9c77b3d05dd351e8. 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/BXYNZ2000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3a4cc50ea6ddf293156fd4ff5ad06dd4638f21af582ab79e734fede2a5f73f. 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/BXYNZ2000260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2d298f8762b84f545872160e16328f9bfc08644a59152d09bf014e8853c9de. 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/BXYNZ2000261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cbce9733247df066baafdf19938f21fb2bba9d3c0333144df724b5c55b90d6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXYNZ2000496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232e15f72486305c4728235c7087af8a440cad0f643899e3158f9db478a4b5d4. 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/BXYNZ2000499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdec5759e0a301de9ff56d5fe0fcd0dfc06b3017f8bc90a38c69d6689bffa9a. 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/BXYNZ2000500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631ba24fa8ed9afee108894b1685aca7380ca0c4c30ea0ab3e456e802c806517. 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/BXYNZ2000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbad2ef9790ea18a9558b545f5f3bfa8cd5235f08dee9e4f5b2c7ec23f104c9. 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/BXIV82288919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa223e03252776738397b6ad35754203703a75a1c8a6fcd4330c9deccb41bebac. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BXIV82284529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d553fe3ffb44fbba6a5f3b91df076f6e0db425880019feb80992b8fb65c2fe. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/BXYNZ2000533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f600ca255222b84e5d799abf5db8a0abddfe95a5e308f617672a8fdf1a4f8. 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/UKXN22251775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f829daa48bd0d1d3568a6189816999c8687ce1173253759da76c590b06d7456. 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/UKXN22251776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d4f3e3e090a56055dd04a37bcc6045895ddbfb1a4b3af82791180e8ab0b235. 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/UKXN22251777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd556268aa2f41636f8531aaf24a91c18b5dd3ed21f684a674ac3e169a3f21a31. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BXYNZ2000234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee3ee148ce4c6f0c6e8137a727504fc97099c8aa6c609b1ad3fc6e3dd0f5b9a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNJV2367279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c1385abd3551d2ab090f41f6cdc7b4818863d330e76d9a715078f6aa022712. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2365948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86583919a07377b57755186ad4f9ba572d70507205f69791289ba93a95bfd050. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2382700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5249c3661d896b810054a03c3a4f4c2c8654ca1fee6fe98ea4a3d72f562e57ce. 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/QZNJZ2330206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225f2293880e3ae534fc0c77475a45eeb749fb5a1881ce36a1943c6bf0d0f469. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/BCAXS2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8075611e618917081b2b6921fea7f4de1163c507562c0134429d26b307732d97. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BXIV82123286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0461022122bc29410609950fd06f9eb6c6476a32a7513e4fd9cf20697e22caa2. 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/BCAXS2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67b01ddb1cb75113660058dd1e21d4aa7b66b085d19b2af4295f177b6015213. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/BCAXS2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e5afaaacdb8af8f0846ae4b11d321b5a7032375d4fd9f51a49db90dedabd72. 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/BCAXS2500007.
Ressentimentos III: Peito Cheio, Alma Leve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f04703d3aaecd0170b11d723079a75b1ab15d339292da2cd5f09e1e4eecc96. 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/QZNJZ2168302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7939dbd361063eabbe618e036e0f88f60f47b572fa18c709bf22a604cc299929. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXYNZ2000489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f0280b6b77d4717d9f34ae8e7baa6c0e06aceaf11fecc4e96ab326078f7efb. 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/BXV602200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f90c7e5dcc863c3a2a371f3f0fdf1a00fa06c9ac88f41c7df950f614ec11b7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCDST2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeae072a57f44810ec171b9cd390501e6f386968edad3c02d9adaf61ec31ba3f. 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/BKDZN2300002.