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 0x655c54c3a9ca4c1e444c366b11616d2555dec48515c87ca23f31b887fe6ae441. 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/efcd390c-42b2-463b-b004-8210d90c7ee5.json and https://artists.proofprofile.net/proofs/artist/efcd390c-42b2-463b-b004-8210d90c7ee5.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 0x361029b9b2ad99a31e1709e05c8568cf1de42d29d8fcc42f6378e0799068fcad. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:45:40Z), 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/QZHNC1995940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc523b87b6daf4a5b6f76ff0c7565fd0e8c617cbc159dc222698c6141c1ae7bca. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZHNC1995939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361029b9b2ad99a31e1709e05c8568cf1de42d29d8fcc42f6378e0799068fcad. 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/QZHNC1995940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa2cbb6934af8eeb97c7cbaf5b5ae6052f5bab488f6f82f4b01098245e89f04. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHNC1995941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33924c53e40cdbb9835bd892b00621db5bcefde9807231b65ae006dcd3a1bca. 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/QZHNC1995942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b684f8971eaacd833341320e9777ddc155b3db08a129cf418eab81c44b7328. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNC1995943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2af52678df43a02f595ab09073e5d7d12f6d2bedd3468314f8afdf15fdf0db. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZHNC1995944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f88ade2b739f307a723096346a759f56f4046c90e3ba8134d02ecb98f6772d1. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZDA52051028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f88ade2b739f307a723096346a759f56f4046c90e3ba8134d02ecb98f6772d1. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZDA52051028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0f13c03fe86185ede6211a70829fa6eb5276abed22f4375870e2e4c0029805. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3DF2021268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0f13c03fe86185ede6211a70829fa6eb5276abed22f4375870e2e4c0029805. 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/US3DF2021268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b61167c4012fe28abf3090b359ed57ee553d2c9a3a1d55de7c9663dd2bf8b13. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US3DF2089612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b61167c4012fe28abf3090b359ed57ee553d2c9a3a1d55de7c9663dd2bf8b13. 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/US3DF2089612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb783eca977da3efb946ac61b000e65a21b301fcace8e308127334d95550c8fe2. 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/USANG2116130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb783eca977da3efb946ac61b000e65a21b301fcace8e308127334d95550c8fe2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USANG2116130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda93aac3a818d21f215513520d67e245f71a1ed08a3f63e742e014180d6caa6. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USANG2130354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda93aac3a818d21f215513520d67e245f71a1ed08a3f63e742e014180d6caa6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USANG2130354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985bc6c1bd840fde2a8e9a4955bef32f79676be3aacef9bec17f3f3c3e4ce033. 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/QZ93L2117908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9aa05ae5f904fbb30f10d0b775e77ff7bc8569b437330f6debb18e9de727b42. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZAKB2130873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7042cefb33e1951b32ceb24aede106a4a4226af7ca03197e2e8fa4ca09fd5d64. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZAKB2133667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7042cefb33e1951b32ceb24aede106a4a4226af7ca03197e2e8fa4ca09fd5d64. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZAKB2133667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eeaf9c4959ed6f9c514f8150e72e3e5a160c2032634f7c7b75865cb02c9577. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZAKB2160251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337938b3c2897b7ddd004a2b737420e548f1e74c71c826f5b9fcd1a334302a22. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:44:11Z), 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/QM99V2205701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be1161aa8ff4ac5022da8ca88c892d518fb56b9243b52dad72c5d6750780c88. 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/QM99V2205702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b97025e38015c8717fb4c4b5b3ca0ca4d6a4361384e3e02e2d0ba4cf4b6626. 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/QM99V2205704.
Knocking on Wood - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f29ec911b098ec39d7d2845056274134b0ad5a9ac8112e7bad6fb762a27f700. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:47:59Z), 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/QM99V2205705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc676602dbb3ab9ce3a3fb656f974f09443a79039f53228ed381ae59c9cb431f0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:02:34Z), 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/QM99V2205706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34ca94b95d7d8a6ccf044a9c44ad34efdb6d7006dca3c6449ba134400cb8970. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:04:21Z), 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/QM99V2205707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fb2ea95046d268bf948f7429626a83145071fb85929d0793cf42cf8b82d048. 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/QZAKB2312967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa57c88e8343c4d46770a77f9065f5a4fd07bc8dad0ef35385589e715849291. 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/QZAKB2312968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e0fa9b853d8f31cb2d7177128b3c64abe131b7cd6846ad585d31c5ff8e6244. 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/QZAKB2312969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5c0a388c28a5ac6f50f0b234d97fc26624d585b35cdc90b33731424167ae14. 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/QZAKB2312970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2537eff5ca5b208e4c39c92735f083e3a6eea6538fcbb1151293aeff05948dd. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:33Z), 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/QZAKB2312972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2537eff5ca5b208e4c39c92735f083e3a6eea6538fcbb1151293aeff05948dd. 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/QZAKB2312972.