Haevn (stylized as HAEVN) is a Dutch indie pop band from Amsterdam, founded in 2015 by singer-songwriter Marijn van der Meer and film soundtrack composer Jorrit Kleijnen, who began writing music toget
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 0x999e775481cc6db66fa09987591b1e412a2708d7367f06ef21b3716f90f9b270. 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/f1b776ec-3b76-423e-ae01-61efb7b92a74.json and https://artists.proofprofile.net/proofs/artist/f1b776ec-3b76-423e-ae01-61efb7b92a74.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 0x9475b6e869d2efe24b09d3cf9fd443af12b884469017c186dd80dcffae7e909f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM4DW1584218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee94b74e600a22393abb56bbf7c66a1c27579d425ebe8d01dd744a86a7cccff. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QM2PV1500837.
Bright Lights (Sam Feldt Extended Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59ce818ecccc03740f93e45e23988fd0f21c63aea843092d2097f6f2449a373. 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/NLZ541601446.
Finding Out More (EDX's Acapulco At Night Remix)
Finding Out More (EDX’s Acapulco At Night Remix)
Finding Out More (EDX's Acapulco At Night Extended Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4b54af6eb1332c36d0c228d69eb439f91a126b251c269b3d2635f423d92fa3. 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/NLP7E1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9475b6e869d2efe24b09d3cf9fd443af12b884469017c186dd80dcffae7e909f. 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/QM4DW1584218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5c07fe350faf32108322bc519c44381467fda733ddb6816f7a89dac6b73dcd. 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/NLP7E1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd4572355efe2714dae86f1c1706b1bf21d53a6c7d27d10a1041a13d861cdfc. 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/NLP7E1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdfd5493d7983c8485d8be7d04435e7e17458be5010fa72ddb56a4c58800977. 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/NLP7E1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe3d12d11950253fc69d2b27264c208b370fe048eb1b0940b86838a15f23a64. 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/NLP7E1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd4572355efe2714dae86f1c1706b1bf21d53a6c7d27d10a1041a13d861cdfc. 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/NLP7E1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c19bfd192359fa070a56bd776ffeb120f7fbb16f7e0023ac38a8de404697c. 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/NLP7E1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f0582bcb5f8ea17759fb6ab77919782b4df35b744f55db41e1ef90835cc2c6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/NLP7E1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c19bfd192359fa070a56bd776ffeb120f7fbb16f7e0023ac38a8de404697c. 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/NLP7E1900002.
The Other Side of Sea (Symphonic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69764f171be034958eec85317a6865e6eeb7d4cf6d4cbb38535b3756ed1a905. 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/NLP7E2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29a8d0c9e93c8acae52f71a05c64158a898d33c35c7cde627d41bc99f59c1f3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:44:23Z), 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/NLP7E1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296dfc8482a52dce6fc4212095b84231634eaaad92ca778707d10aa203bb8c0d. 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/NLZ292000252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54498f643c47a55439c623441b5e1a53d053d3c169ab0e56444c85fb14b2f189. 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/NLZ292100227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54498f643c47a55439c623441b5e1a53d053d3c169ab0e56444c85fb14b2f189. 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/NLZ292100227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c043459c1d7ab7d0b28a6aede43ac2e50fd02f8b88348a38d00e1a85e77817. 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/NLZ292200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd51008ce92202ae7802b845dcb8251eb0ff1ede654e30985588fc6793b6601. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NLZ292200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0114b5c706b140594337064fafb127d676c1951f9f88081177b4dbd4a7306f9e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/NLZ292200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6db09120748898a94a58d36dd1475ac99ee15981572723c29bfdd976cbb2a64. 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/NLZ292200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c043459c1d7ab7d0b28a6aede43ac2e50fd02f8b88348a38d00e1a85e77817. 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/NLZ292200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296dfc8482a52dce6fc4212095b84231634eaaad92ca778707d10aa203bb8c0d. 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/NLZ292000252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5375a6983270825cd649aa408870868e3a3916ef747527035052acaa0039e8. 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/NLP7E2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eede05f78ed4bc6706d41e613045f9880a32b833f155f1366e7363d778d2b19. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/CAN112401179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5375a6983270825cd649aa408870868e3a3916ef747527035052acaa0039e8. 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/NLP7E2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d5795c6c0264bb7aac3b1d4c4d955cb826660d3dd852c10e5063be60260aad. 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/CAN112401926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa6aa63fd0bc4e2eeff39063a87234c2993fa980e12bc9c3d9bfcec00babcfa. 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/CAN112500972.