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 0xe8b0062aa539c614636baf65b7de4f259b1e4366cdd1567e932e9cc158e8fe9f. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dfe4154-6e78-455a-bc19-30f444bdb317.json and https://artists.proofprofile.net/proofs/artist/0dfe4154-6e78-455a-bc19-30f444bdb317.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 0xe3e16ffcf4ec437ac6c4a3396ec1b5f28111d2f4634053cb00dcdb10e2190f97. 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/AUMEV2371203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33680df5aa76fb74a23562eadeba21c92c4ddc6ad088484251ebf2f742a1b2d3. 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/NZRI12004376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf917ca093c9f41938d59f4d06b187382b43a532026b66d6916837bc69acb8d. 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/AUNV01800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae103cd6a015b727568e79f118921370ed4992a10df20701098f986be964617. 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/AUNV01800316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab61e46d799fc2e3c36f8cc241d8d5f26a3204ae03e14ba1afdc48530897f227. 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/AUNV01600786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffda2401b78c0eb5c542322d85bb25907cf85da1c78fefd9f1507ed90587142. 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/AUNV01800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286ecd149042ca1e2005c91be3b391e8102c85daaba1d6e880093691a25c9f2a. 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/AUNV02100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c4f02dac7a0356f48d19c33f8e9d71b74de6dedfa446c80889135dfd99a5b6. 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/AUNV01900226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2be8d26bb217325c0f7cba0fe059186d1de765f13f8f0d0d7402dc042df33a. 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/AUNV01800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009f11c57a43a5a27b8fb2efe6c9c433a2c9175f8c4290e57c71bc4fa0f5f20b. 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/AUNV02300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad165b6f46b20ba5021574098a445a940d1184764a96f687b6b1ff2ae438cc83. 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/AUNV02000277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2a2a36d7ed629a71803c5a5ed0cf412e6e53b54b942839a9ab315019be3397. 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/AUNV01900457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c4f02dac7a0356f48d19c33f8e9d71b74de6dedfa446c80889135dfd99a5b6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUNV01900226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3eb9941b73b6f193147f4f6d88d36d3d9d55c92464a9087f6b3fb7d0259a110. 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/AUNV01900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2be8d26bb217325c0f7cba0fe059186d1de765f13f8f0d0d7402dc042df33a. 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/AUNV01800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ffce6f8737585ef85b54a2f57efee93b5e2a83462944b383f806074cc4516e. 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/AURBI1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce42338c53836bf8e0aa3441011deb2c038a4b864d8fc16fcd2c4d2ee340fe0e. 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/AUNV01900454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a95d32aabeb630bfde218acd3c9b1dfbe94778637c66fb16fb6e21b28fceec6. 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/QM4TX2437561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3abb2da4e3bdf42d0faceec4d4d2c6b2dbd3dccb1dab76ba9439366dc10afb4. 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/QMFMG2309173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43db09a9d596965725f1fb5aee38db8a4dfb3c93f63391631cee579bd8c3a091. 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/AUNV01900324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fe831e9d297aab6a93a7f8cf131455d763dc5614b42e1a288e9ad65d4f4463. 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/AUNV01800263.