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 0xe8f6b03469e68c12aafddc7f831ec27c0ddcbdc74b9a5ed3791ec5d74f39c98b. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e313674-01d2-46d5-aa0f-c1a76d6f6c0f.json and https://artists.proofprofile.net/proofs/artist/6e313674-01d2-46d5-aa0f-c1a76d6f6c0f.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 0xcaa4cd57db89ea2cc8be51935461ba0c6d1be3b59505ff44cb1bafb7daaa0736. 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/HUB881707113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dad31927e7b460cf6c80d9db5c1eb573f4e3fd38acba8a874f6f691eeb4043b. 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/HUB881707114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e7eeafe15215f906744b21b07dc55045fd0e228c350069bf7b290bf3681918. 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/HUB881707115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b5a3f7d7c66980b1217fb170c5ac1e4abc90c546cd7f25db2bc663d5d89713. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HUB881707117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d33d01b106de9d3b2546478df68c89ccc7353d095aa790617a9adb7325d13e. 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/HUB881607119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2232069742532ae6ffa2a71c5c66a20cbefafea36186172dcb775402a02dd87a. 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/HUB881600302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23ea76cf5b862e9a5726225fe3b3f2d51979dcdede5c0af073bba867b785133. 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/HUB881707127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c4db884207237f735d246733ca7376405bf17abb05b4e6ddf5d9ec3992b712. 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/HUB881707128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4e6a38eb4d2e6b9f291087e2c6eb981477147ae4b53a8d7304515b6b1e4b89. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/HUB881707125.
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 0xdb187952ae83409a78213422080b40a7721a2bce5727cce4f01852a845e5ee84. 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/HUAHC1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404398d3be255c4c1e23faa5ceb54a6af7338f02fb92347c54ae1bc533d74773. 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/FR96X1807743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2700c2cbe3bc9ca0f5061c4758d4275245e81ac6444870814552b30b02e4b3. 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/HUA611802829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc0eff96ce5b2b5749289051c1b38a5e8598bd4fc060329eafae42c54e5b8ec. 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/HUA611802842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6e2799a485dff86c44c5ec227c40ad31916d6233dabf49685c39b78c31a264. 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/HUA611802843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec0090616ba8b0c9e035c37f6559943178de00c5d745c165cd47b4656f230d8. 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/HUA611802831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3f28dc9b0a2cf600f1146a645d7a954f1f81fb8cbfc2bd8f3653696e0ea7fa. 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/HUA611802835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a45262ef0a8e2396812c40596029456ed5ff271d0c3fb3afb01e89a50069a7. 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/HUA611802849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92448f7e1c670e94dbb1572b36b4b1fd7edf41b520959fa427d158ae6f70794. 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/HUA611802836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa167ed997f70514c4cfd1ea2bf53be3f63a4efa6f05707a3fffb165d11e1de6c. 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/HUA611802837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcff13c76b54fae06ff60d94182f28ba23fea61340b914fc1328f47d13138a89. 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/HUA611802838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e53af1481aad6ff63c95b6f13627d4e2eff855d3634d57161b7c0ea2dc1dcdf. 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/HUA611802839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447d55cf9c39715d587f63c2922b35b05d149fa9a52cb719832a705669c1e3e9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HUA611802848.
Koncert a Tiloson, Optimal Show 2012 (Prepost Pirate Live Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1af9b1d00032db59dd3cb1290ac324a637a99ebcfad95bffc50e919007bc618. 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/HUA611502710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492cd6799763b343ce5d111d2d5aad65827fb08bfc8ffcee3cb351d0a1f69998. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HUB001500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0227fb7119091241bc926fbd4654713ebf58eb87de2cdaf699a463addbfde3b5. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/HUA1D2299003.