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 0x2dfe089c58000ac568f0e833b828b1c8a5e3050a9c5697235673ad454112be3d. 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/57eaf0da-70ea-4437-af56-9c2bcf62ceee.json and https://artists.proofprofile.net/proofs/artist/57eaf0da-70ea-4437-af56-9c2bcf62ceee.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 0x486dde00c121994a3d398dd947149ac759083c554d827d7d960f4fe3f346e609. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEYX82234914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a39f274e3870d1e2df71bf9c1b735d98a0a5efeb0bc2a9039a7c83aea526b9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEYX82234916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb479e5ddca9b56af6a8c392c3330813f6ff6c7e4309ee886ac49f2c2676ac039. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEYX82234917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8e6d0b8649f058219bd32e4fd7f8660d477880d6861b948722e215a70a3660. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:54:43Z), 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/DEYX82234919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5075440e1509672707231d5b907005a546232355f4cb1185826f22c55c5e7cdd. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEYX82234921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb6ca23fd87d2d0cb13c71c67f529136d4ccb63ae2fe245b1c29d9f69669720. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ATBK71200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8878e289091798814392f955e1bcb8e839925c06377267459a58065151e8ab. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:01:00Z), 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/ATBK71200334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598495b8f6d2253a3d79a52467deeedc0f55896dae96420fc8567bebf83aa96d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ATBK71200335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029f859b1c324b0cc1b6c2156967e1a96505b453c95673b313d9c554fbec7f45. 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/ATBK71203179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbd171207bb0a115b7a8b2d441338381c2bc012c76bec2415e5075117f13cf3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:39:54Z), 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/ATBK71203180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fc90cb5364f2e172e9ef723e095b20d4c75987898d73cd79db4d27cb51ecab. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ATBK71203181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70cd8b17a6a6b7f7699f14e7a7993d75aa088e2b84e6bb3bcff45321138dfc7. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:06:18Z), 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/ATBK71203182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195d405687ac2a2e3b7835dd469ff3dfd43eaacab42142904c779785d29a4cf1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:03Z), 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/ATBK71203183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b20f1892c47eee9d1ac493a30d245e0a03d66e8b4c9a5a3503f4b4b5e77e1e7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ATBK71203184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d459157d9116e2b91a8c9b2afea71ac8e337b6844357c260a96ccfb13ce9f2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:54Z), 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/ATBK71203972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fe16500e8569e41672a7e1c2ee111416ce64595a671f9710175f65005584b2. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/ATBK71203973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b45750302f589583e0fc387acea3334326f2c074738a1cf3b657e6a52222de. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ATBK71203974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814fd676419a44e642b2ecc0a0565b1715dd4ba29ca3f0fba4f538b4a5bb253. 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/ATBK71203975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23acef69539fef49e20569e25296aaa0100467369660e95a3951cf83419a6c29. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ATBK71203976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f24952c000501705b0c0ceab44002551a0698f6f40b1aab73ddbe756e4c67d2. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/ATBK71203977.