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 0xe9f5c61d694f9c50dea6aff85c501b840a5fa988d36bc9a638b43b4f7007f240. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed40a665-266a-474f-a4d5-0c5f8e6d20c2.json and https://artists.proofprofile.net/proofs/artist/ed40a665-266a-474f-a4d5-0c5f8e6d20c2.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 0x037e5f1be827e220cd630429f74e465ec70c448b44f086349463f6098a899f5c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKABA9747001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dd60e2d9eddcf144dcce755c633078d4b2d65924fc7ef6b2254323b6c7b45a. 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/DKABA9747003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed957fa00eaceeba6c9b9c1b9f78fb71f80bdecd91f8eaf5ccd5ec5eb1e1df2. 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/DKABA9747004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe473eef4e9e2dea268882e6b7db5483e806e6ab37ad821fa7d635d4000bc5141. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/DKABA9747005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72987d1901bee98947ab36479c8c4f53a4e2b1069925d068c5c8eee8ccea73c. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DKABA9747002.
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 0xafa2b1e3036e727e602b64db37111405336af7845d6ed6486309fd44e3ae7d9f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DKABA9747006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47a25b0ebac65277ad13a6e656e62f6aa332e99eaeb9d425c03c0fd337f6b9f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DKABA9747007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc33f3432c603485785be3d0a4c3969fdea7722938cbae331724be661ba1563. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DKABA9747008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94151a48914f4ebe644f3c124887a53ef43c9c9c87fde4625540bbe8f05f9a0f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DKABA9747009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540d8a17b13735b1fe2af8e701f8ebb1fd30313669031f595187e1d8ef925002. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DKABA9747010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0c403965e09ab60c7b92311a44758aae84fd717023f452c50555c29ace56cb. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DKABA9747011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8c35ce6577ae43c385e79a6065cfa439bad339655642f43079ac84acb5f4a4. 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/DKABA9816301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca59e656bf01afacd06e9ef046b4d81cd1e172454ddd091e226330b2acda1b0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DKABA9816302.
The Whistle Song - Musical vs. Krystal Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1641a7ce7940a038106e41546e8cb0a03fab1a7a6601ace1a39908df5ba55f3e. 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/DKABA0002403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af472fa623431c6402dff13d51d646ab52efdcc2168a297eaf93f5ceece8507. 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/DKABA1001493.
For Fuld Musik - 25 Danske Pop & Rock Hits Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b780a091a8dfe546f5de457677f704d6f4465b31b3b560c06131b818cc60d9. 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/DKABA1000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90bd337f619c06d85cbfef8bd39472eda20d4047f33d84093e229b4e75cff7d. 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/DKABA9508209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdd4051b5cf6608109e9a3758354a63a6bc389f85845a748bc1570d19aef2bc. 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/DKABA9511306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafc85382c6d6a7f3f4843eb4b7370c6913e9db37a0e6068fe3add92d27a6fb7. 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/DKABA1200595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa147d1c8a4bfa9d6271097195ee66f44e74eb5b8e4288f32246d9c3dde0d4305. 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/DKABA9760003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa26b1fe83b8c65c547f942b19815e637244576ae452cef791fbcceaf400889. 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/DKABA9766001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266f945d6026faa74be29f726116a068d6b15dfa315adfff185fa72c78a63cb3. 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/DKABA0900868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0951e2f77bed8a6a27f0c1933306d8fdbde8b7dfc73a23e775a7460603eb2513. 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/DKABA0900277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8190f75a35fd9bc48d572ecd4e213fbf39616da127f02b3a680d9be0589096. 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/DKABA0310107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d58827d579e83d38f49b6639283edf9ff3c79e5e8c94216a0774fd8c7d7daeb. 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/DKABA0701439.
For Fuld Musik - 25 Danske Vinter Pop Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0070873403a0b9a2a839cae6053c7c0ffbb4d6294ab98c44bddfdf85825daad. 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/DKAZA1400228.
For Fuld Musik - 25 Danske Sommer Pop & Rock Hits Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774bf73182d4df0cf7e09f7f0c6c21c9a33d830209f35053555d0fdb880429e9. 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/DKABA0306608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e25ba6a153f30d604be188d086145c3ddacbeb44f670fe95e641515870f7ce. 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/DKABA9510201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5065170b6bf9be563508c8c040b2ee079cadfd2546470fdb61ce16b2fe21fe9. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/DKABA0900273.
Der går min klasselærer - 2004 - Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b04e52ba8ef230739e0aca22ebdfc9e9db7940985a677fe2b282e008e010fd. 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/DKABA0400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554d01709566896c81f65ff97554936e90d63406f84f656ca15903baddbd3487. 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/DKABA0204102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061adca68e7a4572dcaaf3a4a07c8c3cd9423ec6d0aabfe32260b3ba25a053fe. 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/DKABA0209204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb139f46ac8c15cf313c13e994578fb705b56173efb77f9fe1098b9772080b2b5. 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/DKABA9616701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8d647bc5404af1ca764bb720c824902392ecd15fe77b6989300232e87ccd59. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKABA0204901.
Ruby Don't Take Your Love to Town - 1997 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99dce107a2710b47378eb03e95201d0f7738750e609288b3921390def1e83ba. 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/DKABA9744014.