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 0xaa46d6db1d28dd21cc1fec1780480bd2deefe4d9c311e14f97746d17d7b824e2. 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/d44f8259-ed41-4637-8943-63d0bf873950.json and https://artists.proofprofile.net/proofs/artist/d44f8259-ed41-4637-8943-63d0bf873950.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 0xd9896cff08b65d29b9f9b168a081053c24533a132dcbeae343824a322be7fd5f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEMA61907323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20638eb6cbfe1ffe4ab718bc37287de28ad72ab6c40e4cb6593303f96554466. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEMA61907324.
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 0x05d9aa886aa19374b9566f23e7e3f123deca2ec941a9793f208b7a9d5b3ba45b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLD682401795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41be8dc20c9e4b105d78c453247ba5b26dad0f2f823c77a0e7ed190ec9702772. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLD682401794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1023adf9518206325325cfb8db6ad25a74dba4de3c28fc30981c9259d1b55c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEMA61907293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95acc5c513e2f1ec8af8be7d5d67a84f5d85d44418abdb0ffc2a242969cceee9. 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/DEMA61907294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4616aedea5658dde2fe25475e53c8d15b886418529d9f51c8a540c9fb48359. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEMA61907223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bc209c3e7d97d0bd8d57a0d319ddf685a87bbca126246cc5966f3ae2bf32b1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEMA61907224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc067790600b8f14a97ce6a675617eb278022a3f18da90240b88b760f4ea68a44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLD682400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8c5bc9e998bc688185cfc09d663e1360e93472f51ba0289e9d0ca32b04430c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLD682400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fabb051211987c94c8931a556771f0f3d1a6634ec69318aa831a3c9e36ad1c8. 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/UKRMQ2301487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e269a41a1f905a72a1169e2c07e9e1ccda471394d15538da9fb75519a5989a1. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UKRMQ2301486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a886dd2f5c6470ff95b3c3899e6ffaca963acdae12021475b531fb48a78cbc. 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/DEMA61906928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1914f9e49f3936cac29d680cf0b4b47015ce17afcc6bd0f52d8ba83ad7110f8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEMA61906872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839a1c315616b91bb97d6c7806f1efd3e4bdb7e8f585e0c90f46c656daddecc2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEMA61906873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c9a4a9f8a8ba37ba2bebf7fddb5b769e61971d84949626de48a5d7c9c81e5f. 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/NLD682302967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5c8ab0ea6b065376291897dc7c5b43b94aeb3314df6b0f12d723d92ac23b7c. 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/DEED72300951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b812623ed82874720079fc9b84d3fedfbc1385ed837ee5fe138430372e30cdc. 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/DEMA61906694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f12618ee3f37d1f6faf81e1fee00d3d318fc213a3d3b09998a2c52552507448. 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/DEMA61906740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd3f34898b7f6b4f13256de036beb5992e185ae78e887d1460ef46f9f874fac. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEMA61906742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea85f2f10d3e65f870b9c677d177cfcf0a5b9b326b775da0e9621f1c603a974. 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/DEMA61906484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa928e3e8aac69c7d4cc6d38bd263332f4d1a1501a71812cafaf5f7d1975295c. 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/DEMA61906354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be2c847c5db3b0a5eb541a9e355be0f2b602095f51019c24dfb19c47dc4e1af. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLF712301578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d57c5bd6faa1fbb0287ea75e9aaaa1f3b8cd9de42aec9f5630ca8653bdda7a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLF712301579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b45a21504b786273effb170ea7ed6b26020ab7ae7d9ebc3bdc9d6884ecb41e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEED72300843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c5da4c7967323be3d73148edae8999ab73f8e9f5aa021cf3f17459f3b1c53f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEED72300842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e911f140075fa1fb744ef4576146afcfa76e5f66e8f0bd51b697d3a5fe7d5d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLD682300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eca6cc1616adb3ec37726d20588ed94ad6952d96ac6edf1f5ab76a67d794df. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLD682203091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50477b0a82fbe1a770ff388ea485286a2a086dee6f9136778bbfd852bc468f7c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLD682203092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75a99bee555885ea7900e9f06c72a78c0008488e54ef767e0533d1629a1ecfa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEP992200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863900f27544231c945bb4c37c65bd72da325dc20a085b17886e3381215dee15. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEP992200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feb9da6cb86e7c724f46545dbc023cb7bfb45518c006eea3c5d9c119b868594. 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/DEMA61905460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa746fc5de0fe53edbcc0a94565612187cc9c94415eba28e16b5413c27a1d64c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLD682202237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4080d11343886499be477aba9bf092bfe1ba96d582d899905578c9adc601fc7e. 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/NLD682502360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6697ee55324d10cf2518c3f2408238350743e96d3c8ed7e471e6f9536cbef02. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLD682502361.
Balearic Desire - The Balearic Ambient Chill Out Mix
Lounge Top 100 (The Ultimate Lounge Experience - In The Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c942d0ec8da954e922b8cdaba2b184412d2e11232bce14c223c39d798d8307. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:54:09Z), 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/NLS240600622.
Nocturnal Knights Reworked & Remixed Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20008becf9ecd7baea060b726ce1b486341632a4a7919b31910629c639d23b74. 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/NLD682004043.
All My Life - Maarten de Jong Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322d450bb59a886e7f4757e13190dc8a7b4acfc1ec1e76868a4195bb812bed9b. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEED72200662.
Universe Undone (Sam Laxton Remix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e302f21ff4d46f040b6b5c1aad4a142eb702164afa00242e0a6542a53d095b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLD682004050.