thumb|Police trainees recovering a hostage during a training exercise A hostage is a person seized by an abductor in order to compel another party, one which places a high value on the liberty, well-
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 0xb88cc3719fb3b8e5232f3d1a38b142610e7593d82361890a0be5ad87e2e9562b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9c44add-fd74-4536-b224-1f22e0a8ceb6.json and https://artists.proofprofile.net/proofs/artist/d9c44add-fd74-4536-b224-1f22e0a8ceb6.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 0x15b3bfadfaa2f878a5c23d7e45a145e59ba614d05b3e578d6e7fd3dc80d6d75e. 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/QZHN52273608.
The Swarm - Live at Wacken Open Air 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b38cb258d53fa8aec7d6cb3a75f1324dc6216b551b333bf90330e217f9c1f18. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEA622400442.
Curtain Fall Interlude - Live at Wacken Open Air 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c01a14b76ffd24a88baba70bfbe04feb24031857121c615a2b963eeeb75d36. 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/DEA622400445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557c373417d5f85475078b54a170a428c3faf685586d416c2afdb711247bcc02. 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/DEA622400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6726ba5a3701caee24fbd8e1f66b45f952d9308a82d11d8f9d9ebd68e359a251. 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/QZMEQ2209160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb9362c918259c13258fc369da7cb136931c552365ac2d2f2cd0713fc416141. 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/QZPLS2140302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb394b8564cca8332204f7564b5de24673a2c5836f46d03d40fb91821bcd91db0. 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/QZNWZ2085289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1182746c2c244d1a5ec814d7f1ce1e46e7a230b6102a5cebef6b6e19d71a4d61. 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/QZK6F2070873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2a1fb41db7d3e8bc9bc581e0761b8d571fcdf4050569e0ac45eb11b5ead3e0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEA622201555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd38c4dead633dd9fca53e1fd8e660e1d6f6d0eff2d748b0967ee95a20ecb20. 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/QZDA62138838.
Rebellion (feat. Henning Wehland & Dave Gappa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d33e620f93358897f19a42d6fb65ab4aaf8cbf3eda3b5f9efb75110dd75853. 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/QZDA62235370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20623834c5b4a0ac184d8079378157de5f1891f34bd23ed34073671827231938. 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/DEA622201556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b3be28314cb22886fae21475ab9637f36cbee322198471dc3e9ff2cb04253a. 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/DEA622201558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b3bfadfaa2f878a5c23d7e45a145e59ba614d05b3e578d6e7fd3dc80d6d75e. 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/QZHN52273608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd1a0dffb8e615f1a6d38d5cf5beddd2454ad7993e5ebedff0463cd0610a1e6. 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/DEA622201560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2810274782c7406652e6e893cbc00426b990d41dd8842be68713321e3b40f721. 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/DEA622202041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6726ba5a3701caee24fbd8e1f66b45f952d9308a82d11d8f9d9ebd68e359a251. 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/QZMEQ2209160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39f10465b1129800c392790fd58da29883126117b394fd361a10860f99480fd. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:21:02Z), 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/QZNWY2117131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb9362c918259c13258fc369da7cb136931c552365ac2d2f2cd0713fc416141. 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/QZPLS2140302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb394b8564cca8332204f7564b5de24673a2c5836f46d03d40fb91821bcd91db0. 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/QZNWZ2085289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1182746c2c244d1a5ec814d7f1ce1e46e7a230b6102a5cebef6b6e19d71a4d61. 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/QZK6F2070873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2a1fb41db7d3e8bc9bc581e0761b8d571fcdf4050569e0ac45eb11b5ead3e0. 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/DEA622201555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd38c4dead633dd9fca53e1fd8e660e1d6f6d0eff2d748b0967ee95a20ecb20. 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/QZDA62138838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d33e620f93358897f19a42d6fb65ab4aaf8cbf3eda3b5f9efb75110dd75853. 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/QZDA62235370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20623834c5b4a0ac184d8079378157de5f1891f34bd23ed34073671827231938. 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/DEA622201556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b3be28314cb22886fae21475ab9637f36cbee322198471dc3e9ff2cb04253a. 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/DEA622201558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b3bfadfaa2f878a5c23d7e45a145e59ba614d05b3e578d6e7fd3dc80d6d75e. 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/QZHN52273608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd1a0dffb8e615f1a6d38d5cf5beddd2454ad7993e5ebedff0463cd0610a1e6. 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/DEA622201560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0038f33be8b648d56215de7aa50d7d277df92cb6267c48fa298ee7df6dc0fef2. 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/DEA612400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e53230d523ff6d2655c958f46c2f943b25a2cbf2dd7e0b8992e6598dee5b55. 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/DEA612400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e53230d523ff6d2655c958f46c2f943b25a2cbf2dd7e0b8992e6598dee5b55. 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/DEA612400040.
Don't Let Me Down (Live at Wacken Open Air 2023)
Don't Let Me Down - Live at Wacken Open Air 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7aece42970abced024d27240cccece05a5f69db66a1cb8cb1d81191aec7041. 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/DEA622400447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f5e8a71f604ccc8071bae34dc5658ae15432fe970d4de42a0cd878c25044e2. 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/DGA082261724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2810274782c7406652e6e893cbc00426b990d41dd8842be68713321e3b40f721. 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/DEA622202041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1182746c2c244d1a5ec814d7f1ce1e46e7a230b6102a5cebef6b6e19d71a4d61. 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/QZK6F2070873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873f087b0aa10d77eebdf7d7a34c2e20bba098191ca047dccd11ac1707b5dd6e. 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/QZK6Q2027003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002dfe2acd0d58d28018ac59ca2a72a8f4a072afad24b87a2f2e73d54e0c1f81. 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/QZK6Q2027004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42d1cf38a52c43193f29c5ddb148d72e71b472bd6e8be0ec7b95e129fc3dafd. 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/DEPI82010871.