thumb|upright=1.6|Athanasius Kircher's map of Atlantis, placing it in the middle of the Atlantic Ocean, from Mundus Subterraneus 1669, published in Amsterdam. The map is oriented with south at the top
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 0x55552b7905e0de636232a89a71ad750de4d7ae5d52d718ae646d7348558d171d. 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/d49488a0-fa48-4805-af36-a82c5aad7be8.json and https://artists.proofprofile.net/proofs/artist/d49488a0-fa48-4805-af36-a82c5aad7be8.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 0x2aa9bedcf6d4f921ab8acfe9c34bb2afbb40103605427ddb27d6636cc4166fc7. 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/PLB170600242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d83f35a3a66b1382fdb01999a2a6c6965ba2adada8636bbc4707d84826e1bb4. 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/PLB179700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fbb4a876c5871c3e83f3bd3f698c853a8fe917ff754b25c2c0e4883d361abb. 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/PLB179700184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa534c954d3a807c4f2eb5a5ccc173c1ed880cb1cd238f6fecdba3e284dd92d. 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/PLB179700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d0789d9c52553cdd3157a3999df84de5db1d3f40fc8da473555686fbb762a8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLB179700188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a957d099f00b927742a5df434d1a3aac1d6731eb65f09722e5834a2113a2ce0. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ATV110425005.
Live At The Sunhouse Amsterdam + Bonus Studio Tracks (Live Instr.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caed6503663f1e0ac8a898993e0fa52e5bce87e8e7a6a0c22d7b0d7571e8a5e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/ATV110655007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfd7089723f423b1544cd62d416c7c20f25cd458cf3f62008818a96b477ac12. 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/ATV110655013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8615d81b9b54968612996d5b04b72db76f1a4e2a98d05d3d9793ddbec7891f3. 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/DEA600000599.
Sie trinkt und raucht zuviel - Chapter T. Fox DJ Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6acbfef5882d845a9f9b574e37d33a03a878327292dbc62c32af56d7533182b. 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/DEH961000018.
More And More Great Guitar Instrumentals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2721c5f88275fdfdc3ae93019739d2cd240d153eab529c5ffa08255d65bc97. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/CH5331100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dcc864f46391add587f9a2d073500eeb444e18d8635c70ef1e60b09ce9c160. 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/CH5331100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7d7e5ad8f03b50aa212689ac2b73c69f458a68bd3b2179148ef10126dfa640. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/CH5331100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfd7089723f423b1544cd62d416c7c20f25cd458cf3f62008818a96b477ac12. 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/ATV110655013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7ff86cfea33c9e7d7a2fb9759f720e236ce0f3cddce0cd12227f37cc915cd2. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/ATV110234113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e63a3e07c3a5bbd573833761425c40885293415b598d37d5e1497f228d187b. 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/ATM050400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd037c9ae47419c82d333978ed9ab94afa410e5cd909e874556903b3b50b79ec4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/CH5331400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32041e2f4278b8d1dd9576e2c8a282d4054e3cde66a40dda70c290ec3d4bd69e. 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/ATT251810570.
Halt Mi fest/Mitten ins Herz/Der oane Summer war/Lass Mi bei dir sein - Halt Mi fest Atlantis-Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39734dcdcea8cda3b738798162374bf177ddfaacc226601a1f10ef5ce92a33de. 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/ATT251810690.
If You Tolerate This Your Children Will Be Next
100 Hits Remixed (The Best of 70s, 80s and 90s Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdaa1907797fbba0e3403f039b9106a2d9fa546705194cf459b10d754e7ab60. 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/FR6V81342406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a23b18af216a52eb4e928740a7c3cee023bc2117b78e28491abb4c4658a2f9f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CH7811501689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea9c7fe2058ecad765fc8dbfed034e083958fa52018a8b7f02aad0b59985786. 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/DEF077207150.