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 0x57a0a14dca21203671e59b000c459178a81565f743f78026b9330d498faeaeb8. 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/e2b5ecdd-6f55-4337-bde7-00d63dfb3ace.json and https://artists.proofprofile.net/proofs/artist/e2b5ecdd-6f55-4337-bde7-00d63dfb3ace.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 0xdd6fae38ea205ebb89a5b96378dcc5e452b65f6008653c45bfa4082d29904d23. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:46:42Z), 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/NLAM42101785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ef785edfb5578518113a556404a757be766a9022c99a4782f8484948aae457. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLAM42101787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f308965049e5252d53c163c70385ad33ad5b0a81f5a8aa631ec4552b4fad38a. 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/NLAM42101788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d85000d270e6fbb354d4c910a2d9fac53d5d416bbc601ae7e5b5e57ccc38803. 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/NLAM42101790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6c43cc1366eeb9aed19ba8523a9657d982afd0e5c4eee540383944970e2dd8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLAM42101792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9274361b6ae4ea81714ebd73e1105d87cf46ca06a0f65d7d10294dc0928962f5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/NLAM42101794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab78480dd4132e41138f78dca21a35961ef041260d663689ca0018947a789f4. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/NLAM42101795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09725cdf2cf0c4917d1f46efc90015f1eeb17edec7b839674c3732fbb7dacf84. 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/NLAM42101799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e90e367d0051448fccb6ac0c140ba9b457794198da76cb74a3b927fe0cddf1d. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:03:40Z), 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/NLAM42101801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8282e48e7ae185204c5df5db9825f795df172dd731224675f9f678ff1574394f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/NLAM42101803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1aecb8d1448d8812a2828cbf6b483115864b52d5eb298cd78b7331f54ec308. 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/NLAM42101804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817cfeba99280293682b6017143ea8adebe48348b3bca1af141645ed25364117. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLAM42101815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffc0f5601b6930492deb76de24773a49d33673c6c4b584622ad70e2353fb482. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:23Z), 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/NLAM42100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08ab38b779f798b6279a71442bc59b26c18ec95874b91ec89dd1cf652c0192b. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/NLAM42100885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fb951b2927ac99dacaa05ad9f1cdadb3848b8ea407a8bc719ddfcca65cddb2. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/NLAM42101611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec96495d1cab8f313ef205af69c3c7234ecffec7abfe9c51891b6b1683eacacf. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:48:27Z), 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/NLAM42101827.