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 0x5ce72013139a1e67dd4ef4ed8ebab9d23ea5c75294c914cfb0d2dbc9de9fe301. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c78dc5db-80a3-47fb-9176-1f4fc298f950.json and https://artists.proofprofile.net/proofs/artist/c78dc5db-80a3-47fb-9176-1f4fc298f950.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 0x7d00755a4e40bb1a94ed172079060f092f8d54cac5eca0b456e7a16513691ee3. 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/US2BR9701474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24082ab0da81d95805025083a6ab79925a8136b4a2fea3cb279bcc03bcf2373. 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/US2BR9701479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd15d01d0a1bfd9918a40d18b0633db93a085e6312900b1ac67c6e610175df9c. 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/US2BR9701472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71fba4777482499d1bef1bc6b5209281b8fd89c689bf1af7e3be422664dce63. 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/US2BR9701478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf653953c08244735e8d60103adf93892684b3008d886ce075734318acb1339. 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/US2BR9701416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ed13c21da18c8efefd8f77e95db32ebe3b5f9b3f568c876f56d8271a1096a3. 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/US2BR9701404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dc3514d10104344f86d5715cb77ef74e6fc214c0d724b4bd51fe49a2724065. 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/US2BR9701475.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ed13c21da18c8efefd8f77e95db32ebe3b5f9b3f568c876f56d8271a1096a3. 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/US2BR9701404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd15d01d0a1bfd9918a40d18b0633db93a085e6312900b1ac67c6e610175df9c. 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/US2BR9701472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953801096a31fbe04c7492ae3b2728974c49836facea6c0e474c19611b3c7216. 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/US2BR9701473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d00755a4e40bb1a94ed172079060f092f8d54cac5eca0b456e7a16513691ee3. 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/US2BR9701474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dc3514d10104344f86d5715cb77ef74e6fc214c0d724b4bd51fe49a2724065. 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/US2BR9701475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf653953c08244735e8d60103adf93892684b3008d886ce075734318acb1339. 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/US2BR9701416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71fba4777482499d1bef1bc6b5209281b8fd89c689bf1af7e3be422664dce63. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:14:59Z), 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/US2BR9701478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24082ab0da81d95805025083a6ab79925a8136b4a2fea3cb279bcc03bcf2373. 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/US2BR9701479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb858b664881527b5703e548fb3d6c1ef58c7eceb7f40f2e62e2557c2f4a2f7fb. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/US2BR9701392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ed13c21da18c8efefd8f77e95db32ebe3b5f9b3f568c876f56d8271a1096a3. 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/US2BR9701404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78460238395b17d160606e00c3e572caacd797ce5b1cca359d2ffe6a1d6fa1c. 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/US2BR9701405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf144f426375d0ce885c6f802aa9b79dd7a5f9cc083ee5b4d0459997eb1e3b695. 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/US2BR9701406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586fc2246ade6a79e39fd51f67326df2a950658d59484c87861c22bfa4106f0a. 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/US2BR9701408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac545fc243c96b09d7b3e74afd9638a94e4868c50836d85a093d6a9b1be230de. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/US2BR9701411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708021473dd6f39739d6cf600aa2b043cd4153d47a3445ca62d376ffb08e3e16. 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/US2BR9701412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce4f165112af874b431d9038c9d607b687f9118ad00875c0fd04de03b631444. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US2BR9701414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99233aa591ab02fbc4c87e4a25527dbc33694a24d2d8ac03645af94efcc40336. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US2BR9701415.