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 0x7f0c68624ac09f13740b23b2488fe5d399d0a7ee1b0b3e5127c7b75830a8380d. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/390aafee-be75-4a50-a6ed-e47a6b9e27c1.json and https://artists.proofprofile.net/proofs/artist/390aafee-be75-4a50-a6ed-e47a6b9e27c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
If It's Not Your Fault (I Guess It's Mine)
An Essentially Non Essential Compilation of Recordings from the Last Ten Years (2013 - 2022)
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 0x842f4f3e69eac66ca6f8a9b6a2feb7f4f67ce6ee3f7e037c26ce39fbc9a39ed9. 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/UK9QB1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4984ff6f99f562a151ea1aa33388d66042d06948e6c00c6b01922abe0262ee48. 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/UK9QB1600007.
An Essentially Non - Essential Compilation of Country Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b718e5771c5178c492da7e82a1b9180a3f65d8dd0f1819b2c8346ede6e9fda. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:09Z), 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/UK9QB1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280bac23fbca3a99c7bea618c6d2184bd4bfb605c427b46130f29489d0e4dca9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:53:50Z), 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/UK9QB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68550791bf9a8851f2058f83001a06bc0cdc127e9cd52bf62cf3eaa9ae492fc. 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/UK9QB2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b126b2b0d434ff5bbfedce8536c465f5305aa68967904f65df2d3dfe462c46. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UK9QB2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1df59babc40ce707b542a1d2102d7b469f1b4fe80de9dfa152d73308e97ccf. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/UK9QB2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1989bb7864319b04e0c8dd631a097326c45c2a5bb1ba31f57607fa04e5a2ae23. 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/UK9QB2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280bac23fbca3a99c7bea618c6d2184bd4bfb605c427b46130f29489d0e4dca9. 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/UK9QB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4303a43da989607b2f236a032c5de8f7d8af7021dbee6552e1d84c2a0a4c2ccf. 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/UK9QB2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b126b2b0d434ff5bbfedce8536c465f5305aa68967904f65df2d3dfe462c46. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UK9QB2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68550791bf9a8851f2058f83001a06bc0cdc127e9cd52bf62cf3eaa9ae492fc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UK9QB2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbbcb658d8a3db2bfd1e0edc2b4f710e30629d8743cf53549269380e4d96d40. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UK9QB2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9220be09418cc34d82eb23d91690339d54775bb390431356e701750080f77d. 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/UK9QB2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101fee3bfa59daf8575a04c2dfcf8dc0a5af375279e3fff27a782d094e0f6372. 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/UK9QB2500005.