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 0x9af4561725b1a5fe4a54433ae04ebf22254eb20489d0099187fe5c5046a3c374. 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/5496ff72-155e-4d4b-bd6f-d3c877be474c.json and https://artists.proofprofile.net/proofs/artist/5496ff72-155e-4d4b-bd6f-d3c877be474c.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 0x7340a5b24d40a4ec337d6f3bfeb3e850d923d70ed382b199ce5222e5783d3858. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:51:22Z), 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/US3Z40900231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd007730792b3a15bdc6dd25ee06c642b5b0763863a639953c8e24fa122eddb. 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/US3Z40900232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bca3bae1e200ce09d8dfd59a7aa9753f15c66f5c5c8be55b6e022847add72c5. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/US3Z40900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a29f4e6d2acb3e3296387977ad7aab21c48335b4aa4b70adde69ebc40461e03. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US3Z40900234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116b5cf4a3970ff914a56d6beb65e62b234581e2f698c2c4129e034b78a97240. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:06:02Z), 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/US3Z40900235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb023ede16e7cea4508090f8ca0f3b6ae52272243bed9a14613392f3285b24e75. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/US3Z40900236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7dfdd8d8c64dbabf320d3cc6294d886708b7ad903d6b15fc9ff9574e065bbe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3Z40900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d48e4ea9c561a7a35919e55ee70aa1e2e47baf00f303f72189291270abd4624. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3Z40900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01852e7c002fb6ee545a42e782b124a15c71754e303c1dede0b03e1039b549db. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/US3Z40900239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b62bee129e97c21aaa37ea0a3f1fffe959f3c6e74a99092845bfc1982587b9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:04:44Z), 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/US3Z40900240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e27f0ea9358808549dfb97dcce962fca31673784da9c03bcaca730497184ef. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:47:04Z), 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/US3Z40900241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6a37b9790f8c18da77372734fbcfa2abb9fe3ebeb390192601ae90959c9280. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3Z40900242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5370749f3442f3271b4fcf4979cd5a5e6a0b7ee981c2acd4c60351b7d6b7d08d. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USAM70749605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efb358a38178e472fc7a0c513dacf51e8bfcd1e4f8e221f780c2a3b2b692a1d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US3Z41800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac960a5d5878bfc2897cd04ffe3571f00ba69b137ad670505e66052d88c0413. 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/US3Z41800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e1e62a80ed5c24380f857d446fd46357e2c72328ddd8eb1e7bde12b7adebde. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/US3Z41800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafed86c0cc654f345431a948162680750481d36d74724c9c51adb766fc4afd4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US3Z41800172.