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 0x1da14c86636f1bfdff71ed58f2f4d0f75b2767357ac9d1836ede9414a8ed4f9b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66684734-a75d-4206-8423-b2cef243222b.json and https://artists.proofprofile.net/proofs/artist/66684734-a75d-4206-8423-b2cef243222b.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 0x35dc58b88409650d4e3a190e02c72cbb77e95e8a684e10e218f828b644a40369. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SEBMA0900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fbfcdb669a194d11fa499ab20b61be2baf9dd04189fb29b205f33a2c762395. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SEBMA0900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9af74ddc4b003ebd4cccf83b825559ea446c55922081f3f5f869b36360b8ee. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:47:21Z), 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/SEBMA0900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c3c9af44270e0b16ff9db5fa64c29622f20f71b6bb89621cfa52e90469358d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEBMA0900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168b913f2305764aaa3818fcb06423555edf050dc82b187bce3d6c09c1dad6b0. 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/SEBMA0900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c5523f235d9816ad1a9464299bae75ab9b09d11ab93aac0a36af75b78e15e8. 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/SEBMA0900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be2fa66d0b3b3e3cc5f0b4a37e429763b93f5eae8bd1dc2d2a73642434cec2a. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SEBMC9509010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cd177932b7ef689b9b7a46eb7bc1fa44d45e13966f5c255818ee1fc313292a. 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/SEBMC9509030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb572340b7e21de0c5fb5b7709cce160de674c3b20579dc120afaf6af5c544847. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAFJ2150449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb615b3be7b29a6a73397c6d660cc79005b1194b43f8896d67c26ce1834281951. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAFJ2150458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8c40fdcd3bbd5ea3eaf298f317715a1a4a1de77c64e322af5857744807f744. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHF2327271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa958c1ee61d285506576edb59df706acc61a8e92401c5769b1376f632e0bb8f5. 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/TCAHF2328254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf0880f36052d3522ede87078f1ca5a933e389d69bcb73c9ef48dc81f72364c. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCAGU2335486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f31e358f0e02d84a7c2d201b3282b30c4e2e9294660047d423d0a5ce994810f. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:45:33Z), 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/TCAGZ2379413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a8b204e7a5881902bd52f7be40b1a3c6bc811d7cedef533563e582ffb40d14. 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/TCAGL2287185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d042d9ce17a1b1833a2e1fc05a00b6b8a146e00ba32e24d12019688e5881e. 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/TCAHW2463720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd91d48482fed742c2f70c0c16c1ab257cf6024ab77cb061c69afd75c8a5b5af. 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/TCAID2481619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eae1ef331e5a3605adc53e149bc51c46ff3acc69b5c0a194c916d3ceaad223. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:24Z), 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/TCAIK2468369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5badb943ff7894ece8ad2ce6142cf9db9fe0f5405bcde95aad1d83b773a3c72e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEVGT0604616.