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 0xd8179dd3e8f1c322da80bce53a57cfa3ef1b6f67e80b680dedd2dde728194d7b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff4a46f0-8cd4-49a9-9909-bd0505658055.json and https://artists.proofprofile.net/proofs/artist/ff4a46f0-8cd4-49a9-9909-bd0505658055.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 0xd373f56204efeb1b27806b7875a88ec52c20679d63e092b4ca7359ed8e874462. 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/UK9AV2301740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbba995ffd7dd3f19feea2803ea76acae366f3e13b2216e51a008f8c107d82f7. 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/UK9AV2201328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbba995ffd7dd3f19feea2803ea76acae366f3e13b2216e51a008f8c107d82f7. 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/UK9AV2201328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f01a5e0334c3922f7f9bb453e362d8e0de795dabe7b221a505a4c58e8db93d. 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/GB9TP2001332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d07db101b623a58587b09adeb7aaf3ab10833014d29b03fd2caacf1e3f9dc8. 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/GB9TP2000507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5420b85ac4e23e3f9ceb954efab67b6f9939324b692617efa07eb1774f136e05. 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/FR59R1967556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de9a7378dd1fa255be2d5510d09e8dcbfc908e4f341e26ccbbe381cfe9c6263. 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/FR2X41987207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11705ae5ddd08568e8379a1511db77e9e54624df8a9e64a67faf8b8e8077b36e. 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/FR2X41872042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3c2871e59d78b9dd592bcf19f0381b921a9f087b7b498bd6a1cdadd66f4db9. 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/FR96X1890345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c160329e957ae14dcf27229203de98d9f4ff32f7abd09b36afb2932fcac515. 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/FR59R1888923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f45a299d8994e58a64bd417de540c62665a4e9c845dac741313813129fd6ecc. 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/FR96X1890346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c160329e957ae14dcf27229203de98d9f4ff32f7abd09b36afb2932fcac515. 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/FR59R1888923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ffcb1db9d10ae7b45ca8e5225599cd22b76cc7dbb7cd8894c8455a61701bdb. 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/FR2X41744481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdfb46e5afb00cec4e79d6e7253b56946cd8a09146da30f3866ccd24b7dcdd7. 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/FRX201722828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe784e75f4f01b7fdd6bd7dd4450f7f192a7d58b618333121727aef58a43cebc8. 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/FR2X41693533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd080cbaeb973016b0fb7d12ffa6f46863bfa7a58549e4d06fd9f81bd5e6acacf. 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/FR96X1697703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdfb46e5afb00cec4e79d6e7253b56946cd8a09146da30f3866ccd24b7dcdd7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX201722828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd080cbaeb973016b0fb7d12ffa6f46863bfa7a58549e4d06fd9f81bd5e6acacf. 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/FR96X1697703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe784e75f4f01b7fdd6bd7dd4450f7f192a7d58b618333121727aef58a43cebc8. 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/FR2X41693533.