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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547a902ab74fbf4090fe4635becd4c166304edfe44241d063dbeca23404eeb86. 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/95159008-b711-41c6-83ed-775e6b020df3.json and https://artists.proofprofile.net/proofs/artist/95159008-b711-41c6-83ed-775e6b020df3.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fef6d10ab34fd639cafc13536bd04d1d1c4d80a26fdde1ea3801d4b354d211. 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/DECE72301982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7910f8a55802eb9a2637b41e084e344d509eefafa0dc6211413e97662536bfde. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USL4R1809668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be359d97eaa2d8ec7ef6a0fd661e0341e364ac976b0c2f6131f6075549ee4ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL5HJ2300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70addf914bbfc0d3ed816bc9c1ee31ed3e32baa42350f1b4b327ba74874ee68. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/NL5HJ2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567a240815696cf8a842aefbb24205e0330a12b13a3a7621979c9102167ab83e. 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/NL5HJ2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9707ac027752edafbf81b5ca8344f6e6e47398588fb2cade5c15b76224595cb. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/NL5HJ2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb5a50c3da5aeb19ba9892cd8c67266c019f0d5a5ef8a95fc37e4093fa12b23. 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/NL5HJ2100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdbd50debb1d69bda57878536fb42e5d8d0f930705a69b559af7f8c122c774d. 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/NL5HJ2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d40189e8a987b065b6bef6c71e206065cf8aeff53a8bed2dc5094a595c25a6. 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/NL5HJ2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dc2e36786b0481a41cdb676ac0654370db6ccf7b1ef7bc4b6a504e5f0e19b4. 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/NL5HJ2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0709f045bf33b1d9dabdb0d36f424588c2b0263e8a28176883cca045e1fa7e5b. 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/NL5HJ2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce051f41a422e64c20d251bec6ab7310d417357a65c2e714dcc7bec04dfb00fa. 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/NL5HJ2100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc194e302b38f4b6c5033b6598c6085499aa47f4002fbbf9201222d851c296f69. 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/NLD142100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89f055d8ffd8422313a7194378fc9ebb4e6afebe7c9602ff1b37e35e01d788f. 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/QZHNA2045812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb19509f303bafaa9f295aaf743b9f0c650fa2e7f77fb9f1153b08c463761eee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL5HJ2100097.
Welke Concurrenten / Welche Konkurrenten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6425f0569796cbeb72d46aa4a4bc0e4d8795f8c8fa592b9888ebdeaffdcd6597. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/NL5HJ2100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a562691d1766a5959b2bd2358c936e08f76f0a87a5c8e49f18e2dbb3f38923. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL5HJ2100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78b7a0cd862264cde3630b3aa89788b2df29e334b7288f9cf764e40521db9b4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NL5HJ2100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36371dc9b6473731c40c50666a3a7a693c0d8839249ea8ff911f4b958ddea374. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/NL5HJ2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70addf914bbfc0d3ed816bc9c1ee31ed3e32baa42350f1b4b327ba74874ee68. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NL5HJ2100041.