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 0xff87779805b422fe0b9b427504b673f873568b585b9692cbcd7799d2ba474cf7. 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/64866046-2dce-4bd3-99fd-83eb4ee83b94.json and https://artists.proofprofile.net/proofs/artist/64866046-2dce-4bd3-99fd-83eb4ee83b94.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 0x2592539326925034f427aa10af547541106363817b88bc8bc199aa6dfc9bf59d. 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/TWCC32009993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118cef4a9e7e75a618237f6bc171fcc5fb0d81413f3b0bbb4667f3691bbdba76. 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/TWU712002460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70504ac9ea68ca7dd492848d7d569d7ca7015c93613e385c8d464060ecfc0419. 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/TWU712101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92b3d32d455c67437fe3ef8c75e40fc94e175d6533445c87d19f5f50304a754. 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/TWU712101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099092119d45155d8a8e4d3e300a279172bc69671e7db95cdfab564cbd71515d. 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/TWU712003880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cecfcd641505dc7bc729421d521af7aa57a386c680e19e5322ad1d2e4b53c6. 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/TWU712003550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360b3b925f6e692c2e2cc2ac3507b537b703f0bbf5a3ac80e4ce5d133284bbb2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWU712001608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500cbd6d5b22cf314d3de0512d25af2e6252a967dc9033bbc8402aa442d02987. 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/TWU712101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3413562ea9d9ce31ccce2b750fef3e47e9639391832d531aeccbab43c2cb80. 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/TWFQ51908001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63b2e75e1d306c3e2e5ac963f00a30de896b44d8af4351018f055e626399691. 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/TWFQ51908002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600f7740e7e2a031145da3482d0f666aff1f8c2914e7dcac9267e1732a437010. 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/TWFQ51908003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d0062ffb661650b3fe1d64210d86a7ac836b1fbf55e62227b2e640f2d5a823. 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/TWFQ51908004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d78f1bc66d1d41524f7a1b2c63db60d41d344fdf450780ca088792b0b61e69. 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/TWFQ51908005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d17987fb6bef9ea914a2be1489335e0a870bd66dd38470ce85fdaba5794559. 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/TWFQ51908006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb49f3edc9131afc0e1a5095db956b9d188147e6193c30b571b00cf9169b0d6. 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/TWFQ51908007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc5d2a1cbd99d0d2d3d453aaa22d9fbaaab9b66198508ad6fe12fe163029cf6. 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/TWFQ51908008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b62a941a193079ddec21a3a381876b0c32c943b0bd588faf608385e6e962d6. 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/TWFQ51908009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c9604c4e9bfa2628199adca0ca49cd9d5a660b9e49880e8527bc21169870b8. 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/TWFQ51908010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8513cea85951a8251aa68e976bce7a6b6f3569c77eb16a2065f2335b9b20e32f. 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/TWU712002943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118cef4a9e7e75a618237f6bc171fcc5fb0d81413f3b0bbb4667f3691bbdba76. 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/TWU712002460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ffef8ac13f7219290fadd8d702a1b1cffa5bcbadf69f69d6072fe366d20568. 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/TWU712002097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84878e49ef52d9740e674b34820e0a37bb5db4ad8beee9cf3dc53c2edadd45e. 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/TWU711904632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb68ef9a004a1ff97cb8582bdb5b36fb1ec5065b51bb8ba6cce99545d75cc3fd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWU711905688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b153a1385ee716b701c150f32cd1c2f0bf272ed55a1bf6797c57362a5548abe. 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/TWU712002944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958e045df412b994d0843c6be9617b31b4afed8d5280fc8b366006c76c02e0da. 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/TWU711905309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0aefe74a92e5f828c7667c54eccd51348c31a265316d2c5184c441a374ed5cf. 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/TWU712002945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f625143a0e18d2a7c9a4f2286e1116443bbfc2afb31ba0653b39dd809530b5. 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/TWCC32420943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3039344bd3c93369e72eb9d9e5f1dcf96935eec3ea5c6919956cbe2bbd5f6f. 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/TWCC32420944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff34d1834b4e2e28a61235d78f16c7ce5cdcbf19496f964ed0b79f124cd4cafd. 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/TWCC32420681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6facf5e9cba4fff955e71d475534f0525cd3efd259fa52893bc299a8196f78bb. 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/TWCC32403546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb837930146766f68e1782e6299b1c1ce55ff16fac3687f889e8b93ed2b108. 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/TWCC32310023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573f8482bb3b59f1e5168a7ce1a1a1b901bc0c410b8db0d12543a1e135894b5d. 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/TWCC32308260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c43c34587443b4053f8fb3d0bfc611c227621b30471b782687c15aa1b629b31. 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/TWCC32304518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ffef8ac13f7219290fadd8d702a1b1cffa5bcbadf69f69d6072fe366d20568. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWU712002097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb68ef9a004a1ff97cb8582bdb5b36fb1ec5065b51bb8ba6cce99545d75cc3fd. 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/TWU711905688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958e045df412b994d0843c6be9617b31b4afed8d5280fc8b366006c76c02e0da. 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/TWU711905309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84878e49ef52d9740e674b34820e0a37bb5db4ad8beee9cf3dc53c2edadd45e. 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/TWU711904632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62eed1c7bdfc68e8b6f76e981b2abe9f1cb953b36811951508e92efae497dde0. 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/TWCT52436512.