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 0x5cd3228f59dc11da58f0588d1105bdaf468cad7677283e4747aaa4e54618f67b. 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/7e0ade62-66bf-47eb-8f0b-2337064841ea.json and https://artists.proofprofile.net/proofs/artist/7e0ade62-66bf-47eb-8f0b-2337064841ea.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 0xbd85610ce24407afc1d7d3724268c430c80155beb63c2f0d3fbf0865a8f63766. 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/USUM70962215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4fc0458976fbd319dff9df2cc74e1a3a2ceeb2435dfc8d34c71980921e7841. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/USUM70900648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5949b60a742141506acec395da6282c3b68b7ff7d1705123341044595ae1577c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USUM70962218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9594b5b0d01b25aef9919e6f3e2fa2573ff7a710e5950dc77319a8d4cb4c41. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USUM70962220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc483d37b5796e40613591777132f5abe4e4a62014717130e3f4dbb10603652d9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCABL1217514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c82c3417346e623aeaa4257489061c6c6a16a8f6c67562d1156fa9d3a2a4cb1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCABL1217515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6411e0a5feb09305a7308be7d6b8b9eef14ec4cbe87ed43400e67b75fd5ab627. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TCABL1217516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667d060a0b748c96c0e8609ebb13c9f9360d9d5bdd114b1144dbbdab367039a8. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/TCABL1217517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2d835ab160c15c3b536f426fc0277bc4e9d945bbd7bc8468af3f11c7bb7484. 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/TCABL1217518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc054420513d0f9779a8ee561230d27e4174d073d71fb46ab7960071afcb069. 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/TCABL1217521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5869b6073521875a56a40f1554fbf3a6d8d5da37e806c0b8dfb7f8472bf764a. 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/TCABL1217522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b95f5cbe820ae64f62be160030d3f193740b42784db216418cc1c49a66a796. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCABL1217523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbd86a8911fb8ff2239a4a182257dad58f87140116f0f72d1c1466999b659f6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCABL1217524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc483d37b5796e40613591777132f5abe4e4a62014717130e3f4dbb10603652d9. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCABL1217514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c82c3417346e623aeaa4257489061c6c6a16a8f6c67562d1156fa9d3a2a4cb1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCABL1217515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6411e0a5feb09305a7308be7d6b8b9eef14ec4cbe87ed43400e67b75fd5ab627. 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/TCABL1217516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2d835ab160c15c3b536f426fc0277bc4e9d945bbd7bc8468af3f11c7bb7484. 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/TCABL1217518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf360039b42e6fc909c9f41c923dd750c85d03e2a67f1b5ae020f4e5b86eccb59. 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/TCABL1217519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709be74d1ffbb02c77a32010401485ae766cea620514c60ff84d0ecae21e8c77. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:20:48Z), 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/TCABL1217520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5869b6073521875a56a40f1554fbf3a6d8d5da37e806c0b8dfb7f8472bf764a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCABL1217522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c1da463c7b91bab6079cb67cedf00d8ea1e1249dc760af6c8b20c40354684d. 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/USRO21600840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7965c18e5a6f43ee325c372b132d039550e72686bb5f745652b6819b3d977404. 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/USA2A1604405.
Dead Man's Town: Born in the U.S.A. Revisited
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469e792911cd5f67d129935bddb2d0fbb8e0e2d22c3e042b1f913f16eaa2e5c3. 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/USLN61400256.