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 0xc6bf39813323d0831eb7fdb308ac978378a2945f75132d8ad7f6284773323d6b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a502c51c-fbac-4d47-ba02-8d75f7b82e13.json and https://artists.proofprofile.net/proofs/artist/a502c51c-fbac-4d47-ba02-8d75f7b82e13.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 0xd97c6247a7cab0ad24eecf3576f5f9ef91fe4bcc40741f288a5a8fc6d7e3e273. 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/BEI019008602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a37aef65f8c76391c1d23a95c812f62524d145c4ef415b5ae52b00f42885ca8. 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/BEI019008603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8a419d340f9d5ddb87c120b812c1b81a4da12a47fdceeca0f7c2053be5898b. 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/BEI019008604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d424d6340556a6f26ccb4a8a1c7bfce7c70d6789643823f76e38331f2134e59. 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/BEI019008605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529e8bf1320b9027701ca697511266b91af24a4f19a93e997f6ef2335032199f. 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/BEI019008608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bac8aaecbac07b689d8d2e45cad7b8df293c6ff5ac6072ca9db8dec99415105. 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/BEI019008609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ec675113594178083cbc5ebb8215990e0a5904dcd1d69f416343484c81cf68. 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/BEI019008610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92387428c61a5d6c5d3fa6ed697e58b229476caa2cec8e1868ea393cbbb514bf. 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/BEI019008611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95a99f67e0287f6b5f56e27c0b4141b8ef95735d8ef49146b533a08cd33eeaf. 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/BEI019008612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a37aef65f8c76391c1d23a95c812f62524d145c4ef415b5ae52b00f42885ca8. 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/BEI019008603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d424d6340556a6f26ccb4a8a1c7bfce7c70d6789643823f76e38331f2134e59. 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/BEI019008605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f98a10b2c35c022941e38698cb9977f315684fcccf0437fba390fca8f8f0ef8. 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/BEQ027200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97c6247a7cab0ad24eecf3576f5f9ef91fe4bcc40741f288a5a8fc6d7e3e273. 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/BEI019008602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a37aef65f8c76391c1d23a95c812f62524d145c4ef415b5ae52b00f42885ca8. 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/BEI019008603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3465225bd4157617ac42617f45066db90e64b31db0eb05b136c866162d4e10c. 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/BEI019208609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92387428c61a5d6c5d3fa6ed697e58b229476caa2cec8e1868ea393cbbb514bf. 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/BEI019008611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1033b262cf8039a3242ffcfe8cd3321ce7c7ee20face8026fbe0e96565ecd984. 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/BEI019208610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ff03d51a4b8ce5c58e6f1a4d8114808087490125df57bdc318646d6a4d2bdc. 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/BEI019208604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7724ada73d61975784f4c7c9208139657d06eca7dea6d8913e2c6af6d8789dd5. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BEI010008601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda408c2003c4f7338132075761dc9b5331674982d4fa9201ecbc522b4c0ad140. 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/BEI010008610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd78ffbafba953c00afd6afc1c484b3cb2e58cb8a478fbd02427a93be44a39ff. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEI018708608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55c5c483ca4c525432296729c8dfe536c24dbf806c61091acd4f8501ba01237. 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/BEI018708610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d307aace390081d00b24e9be04016857b3eb29accc677b07043535cd3d6070. 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/BEW491100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd49269a5cb4f81c961dbe4d9bc1aee0c68e28bb79b8d354cc59565ec63f5583. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEI010410902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7004437d78de0f63332ade51d7d86d8fd336be7ce4873bededff44a08a752b. 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/BEC010100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4665849edb6a1379d06856286bc2457302081498b831fe02630f2d3e21596185. 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/BEHQ42100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49fc21c57e56951c305c5cd313ed247a618cb278d543b9d106fd52bd56b55e2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEC010000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0030a33107537f6fc86f2142de5be6de90f69ca70466fb96c9a3aa34d2b116. 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/BEI011300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c8ed876d07e912c733f5394d37b8ca3d229fd56ff095119c892eaf6a76b3c4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEI011000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bdfa150fcb2ddcfad9ec3297a99c72f3680686e5b9b37e0f22cfb26a9c7553. 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/BEC010500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd739761d91de85d088b636395eea5c11f1800ac2c86e4e79881475a829c617f1. 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/BEI019908701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8b7ec4ab827b5c3df84f8cd22e9647bc7d5cf4a1397bf034bb79a20c250215. 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/BEW491600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec33a7749849630535ec655e22dacf7e55a8a2330534457a7f823a98561d3fb1. 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/BEW491600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8b7ec4ab827b5c3df84f8cd22e9647bc7d5cf4a1397bf034bb79a20c250215. 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/BEW491600004.