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 0x594fd367a8d9a12fcf8c1bb5ca4d9673064e21f3ca2f81571d7dc82b116aa6ee. 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/0af8f4de-50f7-4f87-80f1-182bd373ea1a.json and https://artists.proofprofile.net/proofs/artist/0af8f4de-50f7-4f87-80f1-182bd373ea1a.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 0x5fb29bb3d4b614c85baf88d6b444cb5329b3560bd767c8ab8f9be20a77496710. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZFZ61902852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb29bb3d4b614c85baf88d6b444cb5329b3560bd767c8ab8f9be20a77496710. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZFZ61902852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd0d9c4d77b5bc6be97231288179385eb5e9fd7f55465fe1911896caf6732ff. 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/QZFZ22044453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb423eeca0017fd10d9ce468d90e4696b90fcdb76858600f2de3cc3f9ba8ed3e0. 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/QZES62068797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031d6b756fd2aa619c70d6bd43fb623d4931a824497059235ce99765d1b72181. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:05:56Z), 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/QZMER2002006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21b4a74897a22bc38a45bea9f33258eedc777839e3212206c082114a3d68d35. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWW2022026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21b4a74897a22bc38a45bea9f33258eedc777839e3212206c082114a3d68d35. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWW2022026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2e6ff176f13d3490e6fc944ad930b462104f398aee2cadd7cfd791f45729e9. 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/QZNWX2003021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8d5c9f05f6a5037b0ff01bf2c9cee2430d51140a7f82c2a26670ed16ed9a88. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNWY2088800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc93bdabfc6fd29d9eef71195f43e9072d7676867661a05dd2b6fc2296066dd9. 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/QZES82158352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc93bdabfc6fd29d9eef71195f43e9072d7676867661a05dd2b6fc2296066dd9. 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/QZES82158352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64f8d5cc96e8027fd6839856730198868deb8387c7f080b78d863474042cc9a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMEP2141089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aac62dd57b91be0f2f2d299047f51ebafa4b61c1a5e69b60b516768809f9d2a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:21Z), 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/QZNWV2147433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e187be6f380d8407ccdec8059d9970b718884ced90818bd9803a6c60df7a4ba. 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/QZMHN2254506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49ec81f62d449436c511b92f81caa4865f14ece72987003d45f4611a815856f. 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/QMDA62242807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd611956d64e77731ef4648ca17f264976e08775ac7759816ac6a16b842f4532d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QM7282337403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6c1e6e10967b546941d4d8d0d1a42797b8fef30f864753abea5aa9f9f573e1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM7282337416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835cfa3b0d0629b55f98c81c23831d6f5e1dec94f790d419193855d31bc84d99. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:56Z), 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/QMDA62314240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca46abcc68f70abbb3df75d497de8922b518f8457d6f327c6beb1771f58706fe. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QMFME2316792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835cfa3b0d0629b55f98c81c23831d6f5e1dec94f790d419193855d31bc84d99. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QMDA62314240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9a24a5138ce397ff79e31990191b3b0cb19049130c9306133580573cf5d291. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QMFME2386738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8ab235bda100b58aedadfbe4786159ba944a1e15454c87cb4d10ac75609965. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:44Z), 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/QMFME2386736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab21eeeea2008f4116de755945ac5b4a752313ce9670ef5c76dfb6408471043. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:52Z), 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/QMFME2352429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49ec81f62d449436c511b92f81caa4865f14ece72987003d45f4611a815856f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMDA62242807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d52e90ecfff3d16e0a25589eaebdba168cf1d233310cb441cfd34db8f4d15a6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMFME2386732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca46abcc68f70abbb3df75d497de8922b518f8457d6f327c6beb1771f58706fe. 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/QMFME2316792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2ac469decbf92214ec8858c93eef945d6270f4e83274ece194899d9104c1d0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMFME2352185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e96bcb741b121e2c357b98a547a76ce09199ae55a90afe7610200f11226076. 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/UKZGC2404721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6506adb9af735ada4f2d2d235ea48244cb810c4ee2601db9d2b4c85cc87dd81. 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/UKZGC2405872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6506adb9af735ada4f2d2d235ea48244cb810c4ee2601db9d2b4c85cc87dd81. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/UKZGC2405872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2ac469decbf92214ec8858c93eef945d6270f4e83274ece194899d9104c1d0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMFME2352185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827ba2429603b46ddc5b205d6ab5c7d1d8d3d643b0e68fd0f9c0703490bffeeb. 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/UKZGC2302424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9150233417cf230ae2ddaf70d846e865c22eadb02b3787a543742b39514979. 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/QZK6N2110014.