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 0x7d3b157c9f92ffa2bd056914ee23939d57f41d6e0c3eb136745292be046b5de5. 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/374ce56d-f5e6-40b7-a356-2ec4d769c643.json and https://artists.proofprofile.net/proofs/artist/374ce56d-f5e6-40b7-a356-2ec4d769c643.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 0x9171f7f068d7425d00c2e48c5e346f5170f1166e50eac72952f4a0ee79af6b1d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEAR41632967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c36dac7f7030a3fffa1b3fc419986626e85ce586c65e06766a8eed2ffdabc. 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/DEAR41632971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4952a141e47d1bb35e5205ac7631cbaa7ea065bbc22e51730c8d94e5ae3a3645. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DEAR41632978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37494bd23690d5cd995020c152aa774a25dbbdf43eef129afe221854ddf289b2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEAR41639034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775c7fc59b74fc9571fa2ab28f512adbb4ce6b219cdd01c9ba6f071a49a2a139. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEAR41639036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd4ad1f7856f0939b110f4bbddfedce555f680ec6b5e21b788d8b97bb086920. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEAR41639040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf2a40db7340729aeb7eee77742eb5f53f0630b437a593dcd5d32126ac006e6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEAR41639046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123a6e93d68b263c75c2fa86ddee24b6111e76c0e0190123cd939b7b25729ab1. 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/DEAR41639032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37494bd23690d5cd995020c152aa774a25dbbdf43eef129afe221854ddf289b2. 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/DEAR41639034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775c7fc59b74fc9571fa2ab28f512adbb4ce6b219cdd01c9ba6f071a49a2a139. 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/DEAR41639036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd4ad1f7856f0939b110f4bbddfedce555f680ec6b5e21b788d8b97bb086920. 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/DEAR41639040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8630a920fa340482d4d5d4e217d8433a2f3b288ac2a4b0be2394ae43898842bc. 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/DEAR41639041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdd46df7fbeeaaf7225b1faed9c2631d625cca5bf5f976c0ccc1603f856ffe6. 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/DEAR41639042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf2a40db7340729aeb7eee77742eb5f53f0630b437a593dcd5d32126ac006e6. 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/DEAR41639046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7934a6cba379d99eb9bdc46969762463bf900c04f098b2927b81313d58533e92. 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/DEAR41639048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a3fa5ba8e219b65d58bd602d28f222821a36e499cc1f34c361567460595d8a. 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/DEAR41639051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda71580d82d713b8c74d1c773c95c17ffbee07552a601a0dd19c8fcbe87a22c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UST8K1867790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c36dac7f7030a3fffa1b3fc419986626e85ce586c65e06766a8eed2ffdabc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEAR41632971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f52d33e09597c6433c0a9125aae22de1acdb0a9a68468b224d268956536cfb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEAR41632975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4952a141e47d1bb35e5205ac7631cbaa7ea065bbc22e51730c8d94e5ae3a3645. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEAR41632978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6054153f314b3baa0c5998a8535fb311d3344b0c2d1d7c1a72d448708cd0ecb3. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:56:43Z), 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/NLM361800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fc5ffcc3c83d58b747bce1f52261196b34bb4d644f5b9fb1afec3f706dea50. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:29:47Z), 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/NLM361800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef3979f98e58c89e8d186799e8dfb8240093624688da8c3803ade3dac79b60a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/NLM361800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6588aa301ed8220a018c970a463f8796a8ab04b4907d2c1fb459cbf7525a2a53. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLM361800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05512865cd075b40526405e7874fe5d1b1e7575e7dae3510466eaa62eb337439. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLM361800016.