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 0x1b6a0f51fb7d543389b1507c45aed5698179a542761b33381e982668c17eb22b. 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/13856cb0-fd0a-41fe-8001-2ad3c2618b55.json and https://artists.proofprofile.net/proofs/artist/13856cb0-fd0a-41fe-8001-2ad3c2618b55.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 0x0bfad0a54e1322cc8ef351e13e73e4defc9158edf40abbedff90165effa6508d. 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/DGA0Q2374211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b5227aef9843cfa52a66fa656f6428777fa3cc8fa666566c8b312ec36c9360. 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/FRX282328590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c50c15167638f68d7730a8cf98cba9713874d626948855a4ea2cba5d25aa2b. 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/TCAHG2306272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a513201554f9d6fb31013c7beeb2d2156ff1aa67f0fd98f7814bdcfecf0045a. 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/FR2X42225297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329a15621a9c7d1b761e2499a13a8aa13b59bbf2a12b07c7c5cfc1104f92ae8f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FRX452276179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97bdacfefbe932f0058c0052f8ea85fc6c102a567b6064f35afb8d93117ad3d. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FRX452276181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a822b674f7fc100aa3eebca8ef03355db7157e86e3efe91d8864c0f7dfd034. 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/FRX452276182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f78c717e59a0f116c49f3ad6d05c32026c59b4fc476461e96a0c6260e3aabc. 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/FR10S2242654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19777fcf632250b3a022f36d7a989fd05d3b9b1d416c36ae63431e9f20329de. 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/FRX452276184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a128a9a7d53a9d7cc3d2e413460cebb4091465e6c7b1a978dcf7daaacea984. 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/FRX452276186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0930825935c8b0b0a8caa2ce786d33f1cb08279f0b2fbda6f6b34d87368bcb9c. 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/FR10S2021631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9db869c405a7dd1dc2ababe41743fa69462895fd1b87f6e5d5927a09671d72. 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/FR10S2021638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed2c32c0be33462150fe457f28f7bbfa3d0d586b3e52692f254fd5845bc8a4c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA072419069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c82d4b587f4242bb8573834056e20a4937b66cf3c291156bd060d606f2b31d. 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/FRX452448840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b1b94418245de1a7305cbec871e43210daae6a5bad47da36dd57a28e0d9d07. 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/FRX452423278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a11a80e55e2575631aae96e1bcc73ac38bd5d1671f173c27744838c569e7632. 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/US38Y2403304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be7eee565919dd2d5369c97ff2bb425e59106f70899d33387213581f1769213. 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/DGA0Q2375301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d28c9636405bab209cf5b4ea84aa5a231e70a40192b45812c18dbd644c3df2. 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/DGA0L2373130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f1a81e9eddef7ed88796010149fc92001653a0c8fcb1eda6d0c1cc4a7d2f29. 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/DGA072330160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0761068b6052745fc2e77664b81b8be126ab700ff6af23185f5ad66081eb46ef. 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/DGA072373542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd681d1b235eac18343b5f66a842bd7ae895dde8bc964e3a9f5c1f4c4c47f4930. 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/FRX452356503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edaf09f283b6277ab961be9f93712c00e222c09029cdde74c790b9952c36493. 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/FR59R2323616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790ccce9f263f82f31cfbbe7b9ccc0fe14c20147bcb6d1f6caea4373825edb3c. 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/FR10S2310719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757b5134472e0a8605728122aaa0409d7a94108224c6e7d008ca920f33200cb0. 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/FRX452276183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a822b674f7fc100aa3eebca8ef03355db7157e86e3efe91d8864c0f7dfd034. 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/FRX452276182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a128a9a7d53a9d7cc3d2e413460cebb4091465e6c7b1a978dcf7daaacea984. 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/FRX452276186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329a15621a9c7d1b761e2499a13a8aa13b59bbf2a12b07c7c5cfc1104f92ae8f. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/FRX452276179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19777fcf632250b3a022f36d7a989fd05d3b9b1d416c36ae63431e9f20329de. 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/FRX452276184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97bdacfefbe932f0058c0052f8ea85fc6c102a567b6064f35afb8d93117ad3d. 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/FRX452276181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03842634f8fc209cf9d7840c5753c2f7b1fc9da943d71289d634b9afddcaf9a0. 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/FRX282256700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5ddfb0ef756e77a3087d1109da79f824b7f9b5517f7609330da255e673860d. 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/FR96X2291619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc4b5d4e4de0d81b3d30c40c6a55c02364bef5434b844c846db6622ea889be1. 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/FR59R2258818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a513201554f9d6fb31013c7beeb2d2156ff1aa67f0fd98f7814bdcfecf0045a. 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/FR2X42225297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f78c717e59a0f116c49f3ad6d05c32026c59b4fc476461e96a0c6260e3aabc. 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/FR10S2242654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0930825935c8b0b0a8caa2ce786d33f1cb08279f0b2fbda6f6b34d87368bcb9c. 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/FR10S2021631.