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 0x5d1864660a831e64fb43a1584a4f572dc10c9260466825660d745ccb675867eb. 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/2d1972aa-3d52-4eeb-a52f-582239295ef7.json and https://artists.proofprofile.net/proofs/artist/2d1972aa-3d52-4eeb-a52f-582239295ef7.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 0x6109e0b88b460163a136310d77950ce54f17a4fd7e87053c390dd5503dea48f8. 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/QZES92044332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73703fff0ca8bb767d4a45c3991fb92490a5e35e833d722932e1694df44f3ef1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN42015168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c89da05bd9f2e22834c439ab551a5730b52a222222a711b876a63ab044018d3. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZES72146077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95a195d24680962f59c4126af583c09777d46b0926847fe9925403f9e291c84. 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/QZHN72111571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560d14e63490b64be946919153a80a5895b7dae05323a8183f1ce821b348a86c. 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/QZES82035577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bf8ef0090dbcd0857700d92ec72322735b77d1574652c0cd7dc017cce480c4. 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/QZES82035578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb702a041de8f8a91c9f13fcd688fb8e36d37070fb65c3b8e07dc97c50a7b2077. 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/QZHNC2005545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3766ab26e8f8df40013558c2cd1c80e00f26eb97723ecf412b244e9b2c8ccfe8. 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/QZDA52147273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb1304fdb2d1f19f5a397e063b99cc0b01517823553467dab8b75987a12f546. 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/QZES82000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b0442d4041e7964c8067f9f67a75ead376269775ced24ca9d5fe7411ee88aa. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZES82000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159c30c1bc636c92bad66ebfe3458bb8270e35ae69dfa997b758fbffffb959a5. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZES82000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc666c0ac34d08fd64a4a39785e523c45c23dadd02afbbfbb20b60373a6b719e. 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/QZES82000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c35532c4fff52bbe050e18a9c55d93033bedc6d2a5cf8196ac0da8d0f95f2f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZES82000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1722ef39a10794af66b7a60e97ff861a5aa9074112686a6701ab6f67a5837b2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES82000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52d048f8b87363cb4c9290e81e699d08171e2602a1207cef2a9a273321b6e6b. 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/QZES82000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a74d1c5f975a244580235ea1a67a1cd2c2d283987b3ae0089e86ed7eab9186. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZK6N2168377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36afa3240296864189878859c0b82c107110279392aa2fa5e5dcf205d06eec0d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEM2189397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038b14e3282120b740c0517e7f19b6b6061734273e7e2cff53217f5465a8ceed. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:38:14Z), 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/QZNWX2147013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7771994044e2a77e2d55d7c1958956a153ee66c5a3ddb4e99319e2dde8fc24db. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZPLR2104693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d53b1ed30352c3521ec19ec8aa1bbc6fc0c9cc1482e4f3e75a3f50d487c9823. 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/QZES82223093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47e2219dd53deeed54ae4ae21b07c52fb2a6968b2d2c310269681c74fbf5618. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZK6J2238533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb130d77c60029ca8742f919aa310ca2fec72edcbc814dab383177930e9452a31. 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/QZFZ42304442.