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 0x3b0b5ebc7b559e33fdb9b838c471ec545bfc4eaa1817e9f1836cf13cd9951202. 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/107f40ef-2fb4-4ab1-a66c-97f3e6c95261.json and https://artists.proofprofile.net/proofs/artist/107f40ef-2fb4-4ab1-a66c-97f3e6c95261.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 0xbd1618719aa19a9edabf4d78663b91ea1411708d143fe01c4e0649807557b194. 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/QMDA71594175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a877f0989343744fc17b1e0e4de875e5fdbd2158e9138617c7e833f81407a7b. 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/GRHV11500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bc44d1abc9006a222002658bbcaba7fd588a2b8b61136cf2bab1c7999f08e7. 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/GRHV11500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8ba80abc0fa98491f60d7483b226e7b892a78a29aebccf6c6094a269698d5b. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/GRHV11500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de94f2287755d554859fd4651afe01f6aa7f13e2363e3fe835b75205ea38922. 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/GRHV11500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8cfac4e880135596a10499ca29fb91185cfed34feeb9ac8e792bb6b12b29e1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GRHV11500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2dc85fe33d9eb85fcfeb4bda579d26ecef651cc171d79ab09f4d2fce392bd4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GRHV11500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0cf315918bebad71c77dc6b21e53b1fe654b2f6482f93192d6aa15c9365a5e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QM7281576408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5068be2ec27bf2a8da305be13c2138c5c983c6e0d68bd60d64d0050cf4e665. 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/GRHV11500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3168bb77772584d94b0c2a25f71e1f3ec08a9f2692214a78e5702e7e77cd5814. 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/GRHV11500188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c5149e7ddcb6cf9e5d7806ff49a4e23a0517911123dcc4d9660f95eda4a32a. 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/GRHV11500189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa614e4f8c6c0d4418bd656f3eb85de8b32fd05332a4bbb14163b4e5554754a4b. 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/GRHV11500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0f6b24de6eb0fe5dfa52526ca9cdf3743d32f27384d5a5b56eac8732d48dd9. 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/GRHV11500191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741666038766aa957bb0274ccb49b6aaa87b327c5dceb64c537436a786f9137b. 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/GRHV11500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ab22b5c58ecbf02c505568ab5b30fa3ad1b8bc4e5f58d5ebd99c9805e97e4e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GRHV11500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cf3ae08f1267a9eece11e682d8bd03dc61ab0579ac4b7ff10dd55c505b1e8d. 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/GRHV11500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5d63c8f068e36b72dddbc1e5cca82e15ed7c5339cfa3e915715dfcd8d83f52. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GRHV11500197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfafed1783d361854c578f00b0b4a43f9ef4b0cfd493a1daeda4780288592aaa. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/GRHV11500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8ba80abc0fa98491f60d7483b226e7b892a78a29aebccf6c6094a269698d5b. 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/GRHV11500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de94f2287755d554859fd4651afe01f6aa7f13e2363e3fe835b75205ea38922. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GRHV11500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8cfac4e880135596a10499ca29fb91185cfed34feeb9ac8e792bb6b12b29e1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GRHV11500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcd6fd9d3e25a1989855dedf4b49465d984fe84152c7860edfc7cbbb614ac62. 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/GRHV11500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed4fbc32932a81965144c6d65bd46959d676277f464fa075fa140d6bf3d30f6. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GRHV11500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e666314abfdd071e54dfc29c0f20a245677d8f3f6eaca7b352d0fb67b09fa1. 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/GRHV11500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25335a8a0bf7289dc82d1461be3ac69e113c57aaa50f63f14203be517622f324. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GRHV11500213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2dc85fe33d9eb85fcfeb4bda579d26ecef651cc171d79ab09f4d2fce392bd4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GRHV11500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aaccc8cea14a5fd937833db544e74416ec28078d83dedf6eee02bb86e62e9a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GRHV11600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e5b14efaa7ec39d79752cfa3bc6dbc8f7e62345d9747a5adf36bba6607bfc3. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GRHV11700792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4f3b49769dd8a2ae955f2798691af1e8efa5f4599cd648292ccff07483fd97. 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/GRHV11900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678652d79786e21c5cd650405ce1dad313c24c9a5d817a990c66c8006b3f044f. 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/GRHV12000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0315aa66d1174d8964001d9dc8b9b5074fc8412c738d4465bcd4e8487832fc40. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GRHV12100143.
Teleftea Agkalia (Feeling By Rania Kostaki)
Teleftea Agkalia (Feeling by Rania Kostaki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f68aad28d7d5d07608131fc08c67b810f3a5c4fb7c79e944407dc4f7964003a. 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/GRHV12200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a94ca9e355829395009e70d6b9b36cc31c5e2288e2b4410e070dc9c89989dca. 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/GRHV12200489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb885017aebe941ee3ab311ef92c5d8746095ba3c8acb12299012e19bb4eef4d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GRHV12200641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92cf903f95a575951801b41a04db566d75bafcf60faf8b8924fe320596e0ef3. 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/GRHV12400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65ecd9379075955c9bb111e5207aba5bad2d083c69da256803b234860dfb973. 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/AUXL32300082.