thumb|A telecommunications tower with a variety of dish antennas for microwave relay links on Frazier Peak, Ventura County, California. The apertures of the dishes are covered by plastic sheets (rado
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 0x1c4cccd61df48b0337aa7fbe90e6906683157612fa4358e796165de4567947a3. 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/c4c70698-46ed-49c2-8b3f-2af545c1eb9d.json and https://artists.proofprofile.net/proofs/artist/c4c70698-46ed-49c2-8b3f-2af545c1eb9d.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 0x8d2e698f15d607b0cb48b7804f2ac2902a81c478b4c5893d4c376b5b981bad6e. 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/USDHM1302529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203df56e5957d60176ee132d26d684e04af18c36fd89813f8734cc6fd0ed1c6f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:08:09Z), 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/USDHM1302530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddb30bf7b040198eae7e6377ace42895b11e5c32380b7a71ba9c9ebdd723bc5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USDHM1302531.
Microwave on Audiotree Live (Session #2)
Microwave (Session #2) on Audiotree Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc411131cbdbdafa5b6bc038a1a04ed5beebe78171893652542492225638116a6. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:23Z), 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/USA6G1871103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e7bf75c6bde501360b2a429bc3919bcde78c10d1c11cd26ba7a6329a043174. 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/USSTT1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e7bf75c6bde501360b2a429bc3919bcde78c10d1c11cd26ba7a6329a043174. 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/USSTT1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa061397253a1014a248feca7890e2bab2ff84f1dfdeea26bd821ee3d3a072e2e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSTT1900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6fafa5803dfb4ef398095357d16a6ea75824de790b3ed019a002c346921f4b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USSTT1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884df544d1dab1c4396c67b1af190fcf0b96197c9ef692c16e4824d5c4fd6cc2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USSTT2200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece9e1ddbe5663019f23a37e6a3319ca4c9b1d8161f41ee79c49aee034f33543. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/USSTT2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884df544d1dab1c4396c67b1af190fcf0b96197c9ef692c16e4824d5c4fd6cc2. 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/USSTT2200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1d650db66575aed57502a049731bd35dcc34ae2200eeb2daf2ac51a96f23a9. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USSTT2200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da49e28dffa30734a5e05aa651d23cbfb48974fa62d48beb62e8ea6e8f9bb36. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/USA6G1664001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12982634e05394b11d2320f4a58d260afd75b0bae4613ea58f5565ca18ff99d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USA6G1664002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edd08a0aa5a931a94e6fb3488be5417fbd972084068547419e219d8d28c232b. 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/USA6G1664003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd15e4d22e3e6024ceffd351f5930b1bba3b9fd8162d3d5d62fd4468ec1c2fe8. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/USA6G1664004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd523af306af08fd733b52b1c9505b1ab5672c5570ba3996a6cae638ca29be6. Chain 2 (Bitcoin): anchored in block 956777 (2026-07-20T11:57:32Z), 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/USA6G1664005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c3be52147cdcb2ef804511e01470658e480a04f3dedbdc36c08aaacb54bbcd. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USA6G1664006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cea80d66a21667ed859906578aea9bb8319ca1cdbf9cf0c33865fed91a2ac36. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:32:42Z), 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/USA6G1664007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958f3f2f55df74f7330a076670e72f5acdce28a903f3a2ce6fdda9cf2f0d6745. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USA6G1664008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f3978b1605de399bf7868e54a1a6762334bd05a8fb2971c3c32612a87f06db. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:20:07Z), 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/USA6G1664009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b13db90b799a757a75f90623560a40abaf2d005b8da62e21a0d3839de304b2e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USA6G1664010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3916b4e9e5da44f6019a93e397b376f41c10bd779bf86e54762fb85edb267bda. 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/USA6G1871102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece9e1ddbe5663019f23a37e6a3319ca4c9b1d8161f41ee79c49aee034f33543. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USSTT2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884df544d1dab1c4396c67b1af190fcf0b96197c9ef692c16e4824d5c4fd6cc2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:06Z), 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/USSTT2200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1d650db66575aed57502a049731bd35dcc34ae2200eeb2daf2ac51a96f23a9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:58:23Z), 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/USSTT2200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a4824c1f3827ffcb7a464efe799e8c242bbdc6239e6753296b3ddcdb9a4514. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USSTT2300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1d650db66575aed57502a049731bd35dcc34ae2200eeb2daf2ac51a96f23a9. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:47:45Z), 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/USSTT2200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884df544d1dab1c4396c67b1af190fcf0b96197c9ef692c16e4824d5c4fd6cc2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:03Z), 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/USSTT2200224.
What Day Is It, October? (Re-Recorded) ft. Nathan Hardy
Those Days Are Gone (10 Year Anniversary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d73a9e72f8d5820006cdde5b5f6cb2dc1208126e8b3ee36007a880a77ea4ef. 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/QZNWP2572004.
What Day Is It, October? (Re-Recorded) ft. Nathan Hardy, Microwave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d73a9e72f8d5820006cdde5b5f6cb2dc1208126e8b3ee36007a880a77ea4ef. 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/QZNWP2572004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58749c37b3565eaf18e1048092222a83b418714028013812c4829de97b6bc6a. 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/USSTT2200212.