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 0xfad1a203eb74161fbda3a3a18ee522611d2f5e6b19819fd1732357edd83d5e0d. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dec930d1-8b81-4b9b-a975-18cc75d3036d.json and https://artists.proofprofile.net/proofs/artist/dec930d1-8b81-4b9b-a975-18cc75d3036d.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 0x0a15672d538f5cf39dedf8b3ae101931d4537d70e47b189a82322326ae45f5ba. 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/QMFMG1416864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca54001ac1b12e3f1bfe1dac15a16dca2e6b03af5bfc1f219bec7f9e46fafdb. 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/QMFMG1416873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14de56b9f238453c3499290e09b904ee20a3bd5dbd6e04d73d57ecd301861865. 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/QMFMG1416865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484251c7fcef6159fbbd2d991b2cf827ff1774b29e68361d521b3f878af64e66. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QMFMG1416874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c22456c28b1e4a41e54715cffb4ab124b0cbebd9a42b02b34d5eb3abf1aa6ad. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMFMG1416866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1086705225d3e6bae6d80769ac9c96936c2cf3d39fa096964652f6f2845fd80. 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/QMFMG1416875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e240caf57258caa34a86c06d0d7f89ef2d8b59039614b4afd0d9b060ef53d9a. 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/QMFMG1416867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd10f41a3f280a38f05877a927ecde37f82e4b4ab0055b6d73417e20d4201c0a. 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/QMFMG1416868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85d8c00a687c5ce458017ace9bfcde10cd5c7e096ebac9821b936c9f496b1fc. 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/QMFMG1416877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82488e9fa11e60a94aac5844dc9d13544491623ec7d9aa511b77f6fa47fb136c. 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/QMFMG1416869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dfb7a893a76675d268806e16b4a88fbc02e409e92e34d8a3c67e6c886c127a. 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/QMFMG1416878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ee71af4e508a0be016078bd481ba052398c66a722dc84402ec61dacf7a7da8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/LVA100800121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03417f2b33b410fe413005c89435603448d436a3f42cfc40979282ceb4fd9e87. 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/LVA101000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4845e1e23783583052056be6d4dfa11b57d1287bbd80b81ccc59d8c69d1a315. 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/LVA741300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a530ea7f3d08c13ad89d72ec626afc4bcd594b95c95850fdbc79a81da4345d9. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/LVA100800331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c79a1b1e929d70565f0b28812102e6bc8fc712155dfb5b26a938d7c7a7edbd. 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/LVA100100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5cb68b2cc21704c81df4e27f10efc2b5982fc8aff3892a2404250d199cd3d9. 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/LVA100300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ee2e05ecb22c23a95cb7c628a025c17ea21f334657bc125c42a0c6b09381d8. 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/LVA100300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7ba140b00a687f2445288fdb7374227b01f42f4fda460345fe0cbd3e43240c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/LVA100600321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea86ef08a3e38b23c26be27fa717fcb6bdfe4697d0e9886c6e3abe8b2a5fd15. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:35:39Z), 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/LVA109700113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c598fd402e90988f477b43d89a727b6264ab3e2131dfb5c31b75d388064d7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/LVA100200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9875aa33de7a3a920fdcf455af0a07870eb269c7fd62462debd6f859d5090c8. 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/LVA109900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d929ec9aa6a47477432b39f4e2f4657427ad3fa40b5a1dd913de54ca9f91361. 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/LVA101300340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8889625e476ac8e9d1e4c3b1d2aa6b8a175bf7200aacfacc631ebf5f7a288ea. 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/LVA101000228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9a57ea2d2795b22fdb2e2e306debf343c52a45394124ff634f491f4c1d44ec. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:49:37Z), 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/LVA100800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78602f0eaa0c3cede7b53abfb91957138517b7db2b05b4f0144b016e0cdeadbe. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/LVA100700176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c946586e908734575b076f4c09736a39b53b3d3c5cf1b30ce9eb487bfc6a13e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:08:51Z), 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/LVA100100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a399cfbb1a75225574294518a28ddc039a8a33d99678f1beee063a86e3b7422. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:30:38Z), 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/LVA100300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15594cf89c5da61f79fa296787bc2b3ba5c410721f49b25a4f71607f9710189b. 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/QZPJ32145203.