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 0x10d5ae17546b47d8ce79fade716e6a3c61a32867bdefbbac2068c1d293285a81. 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/4e341624-8f29-4268-8367-1508f937e9ed.json and https://artists.proofprofile.net/proofs/artist/4e341624-8f29-4268-8367-1508f937e9ed.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 0xf3cc57c155671ed1448dd916cb4034f4dffa347ab2b2f5cf80b601b910870a88. 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/QZS662228257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6c6d4cd8ada1234143ed8cda8d5372a8345ca35f5d40751c3253700fbf72a6. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZMHM2275056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b4f429c45519c531d2841813fbd2f1fed68e0881979483f3d67960b6cd2f77. 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/USLZJ1502851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c49e2be65ee48180e6976c88f79c61851ff9660134c07bb98caccd12677f577. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USLZJ1502857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538388435dc572f1874b0b3c9941c1ba43e14a25192817c1279a207a82d95d24. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USLZJ1502848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b6a6771fdfbea55ab46b9de0373e747ea748a57c4b377a2b99660608dfb8ee. 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/USLZJ1502849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c983e6fcd601f480d34028e17a45595ad0297a9695a2450d0318d8f605a7ab6. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/USLZJ1502858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb98e4236e4b78537e218361e4b42ee05dfbe26bd9ecb9bdfb2b72a4953bc2f0. 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/USLZJ1502862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7116930187cead3c13f31dd16c836dd2e6ff603f52ae48083b3a439dec35698a. 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/QZWDD2264023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed01eee17896ea689af43a5292975e95050753337a9fa6a347541958036b3376. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWDD2266031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e510d68c3655701769c4eb7ecbebef134b07264fbd724705f7983b39e562ce. 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/QZWDD2266032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c5c13665728151a4604d351d6b1547b50ad33e14cb3ca38d8d167ac1a53c39. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZWDD2266033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5e2fa07406699d0fc6e8b67a8978234aa92d6463e7c9ef20125f2351e5118c. 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/QZWDD2266034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0bc078b88ea698c522e18015de6e1bac329363c58d9866eca29c40c176f27b. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDD2266035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c6e8db99bd1a16a4cd91a62ab9f61471f1331fe502dc367f1a0be9f29a7a3d. 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/QZWDD2266036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6f20eb231d0d795d95bed78574f916a38647bc72d24ec4edabdd2908145153. 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/QZWDE2490066.
Fermented Orchestra (feat. Terrafractyl) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1112d8672ad6a774a99a9e10686257c07b3a3029326142362607c4a86b4eefcf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLZJ1405699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf91034363dadcde57b3de5738c238298f85d8f5a9b010c3e7efe5858caa1875. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEH741903495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82bf916dc237ab119c01a23da753e2e3683d25542acd4fa4e429948c1667017. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P1958493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf527cafbe481824234651b228f543f60488422015655753f81f6df213a551c59. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/AUZR10700519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2091c83c8d1931bfa3d7fb7a6da721ae12260f3730da91c37cb29e73b4144bdf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS672229081.
Order within Chaos - Logman n Pstump Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6274d101d000c85a50d5b42251a92ee35dcc324f709fd42ef3fba13dcd8d39. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/QZ5FN2054980.