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 0x5b8865e71dfd894f6588ea7ba8ffa1c960ecff37a0a5164c985e61540fcce200. 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/befb4c15-47b1-4541-8e64-f1a2294e2bff.json and https://artists.proofprofile.net/proofs/artist/befb4c15-47b1-4541-8e64-f1a2294e2bff.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 0x67d60478e1c9a56c493e21606096bf86b3fd64529b75cbad0be6eb42ddade4b6. 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/USA2P2242917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6737d652db2afa60995024138c600dc0807220769e19ae64da1d1bedf5d9755. 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/USA2P2203843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a87701efd519e8d2d557ef76e785e084fd56b522bc710ff69124ad67e1b1c81. 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/USA2P2141521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565f20a1a8082eb7bd75de261d7169f226c54e0d70cf6dd313221853cda41247. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2014467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21ff318a147edb4945329026e04f479e87226aba7f33b69e05a19cfbf2cdda5. 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/USA2P2319084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b25e8fd558ca806c2871490a3cc320c1e90066ea5f049d9adaaaa4db8558af. 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/USA2P2346736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc937f7e99a8dde1c84f1421238eea15fdadff36b4f194f7ae6bed79dbd5739a. 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/USA2P2356001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48334fd925fb8219319b73a31da24ead71526e25d225a4bdfaf43f14a72e416e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USA2P2356003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43395790d74f60ab6117605c52e41540bb61f3da52e3a3f19cd22b1cad69179b. 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/USA2P2419955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9057042de18b4d97396d03ef282499de6fcd5765b84a67777bd85467b07c1cb. 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/USA2P2415567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeab6236583e259f700c512c9a35cf5bed976347b939e33befc07c826b68bab4. 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/USA2P2303045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54040586fa25873105bc9c27f57dbb39d3be092e8487553b60191bfae24e6c64. 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/USA2P2206328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a29eae2a8a6131b9dd1b33e0f28436d8cdc9d494454243c2a30787086978de. 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/USA2P2160062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80173286e9b335e79940ad27492d9f80465260f95693714e0571c5410e1da282. 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/USA2P2124424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934234ce72247504d3f77b94ef6d5e1953e55969cc67424eb9be250d9284cb91. 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/QM6N22195654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73bdab9851095e027bb726edfb8e4700f7aeacf0c5a033434b2b20dd9c28ef4. 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/USA2P2117375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736f95748e944c1cfc85f9836ad9c3a06e906b83b9198d08b80fa968aa0aaf49. 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/USA2P2100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4315fdb4efd091aa35392194ff8568220936892697c4857dd198f1924a569b6a. 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/ES71G2061154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0524682425fee37ec3f7b980717c66ccfa8110acee95acf2c1a0105bbdb7dd72. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES71G2061547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d72168e0d228c7c5f5e4a17ab479641d0a406f022e8974ba36fde462774a91. 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/USA2P2100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9141ba2b137f52e546684af115d563d8eb6cc08eb498ef934e2f51de1bef098b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P2100170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45019cd3b46155de457ff4a5f32882b0af9ea7a88476d092a7c800428e14962c. 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/USA2P2100171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0524682425fee37ec3f7b980717c66ccfa8110acee95acf2c1a0105bbdb7dd72. 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/ES71G2061547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4315fdb4efd091aa35392194ff8568220936892697c4857dd198f1924a569b6a. 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/ES71G2061154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac11fff397e6d181f9218122df821b5b5a65ba848c4be4dcf57b61c876fd73d. 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/USA2P2505849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68251fa1e00a6a2ea88e4367b3e1b4e98dc7e5842fae6d35a262c262116017d9. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USA2P2460163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fff1569a41f15aa0e4360dceff3636158050275a7951bff7ed8dd87294899fb. 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/ES71G2019003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c71f05556fde72054891cdf1d5396ecdcbfbaf0b9acaa4a1ac0f16a660dc6af. 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/ES71G1864225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf625275ff713e8ce31f6c5c853a98f0527b7eab27727df99344688b47a6ecb. 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/ES71G2054768.