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 0xbf5e5791ca79ec5255ba064d67c39fcc6511950b3dfd9139777321f9414ca269. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0aa93d44-da75-4287-9449-1342174dce72.json and https://artists.proofprofile.net/proofs/artist/0aa93d44-da75-4287-9449-1342174dce72.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 0x7b2f29712502bf7dc7e94596dc6410f7d269a8dcc9ea67156f61b82288edf08f. 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/US83Z2490246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3542a53d311675c50afb69eb159b6bb598808a20cee62ab940fce36a5f70ce. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US83Z2490245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2f29712502bf7dc7e94596dc6410f7d269a8dcc9ea67156f61b82288edf08f. 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/US83Z2490246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4276f990c5983b3e1b2e9c411302fb81da9ed3a1d9ab095089e2f334321ebecd. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/US83Z2490247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ded9d078b43026eda0b88ebf272be3fde1706b9ad52364d13355a9a77332d6. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US83Z2490248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46542c7b0660830a51f0ac0993e4924e6ce42554c57391c899ff82855b0eb7ac. 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/NL8NG2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5536e99c635c8bd1aa6071c0dc09850e8f1b613e9bf72e931b768f236b1eb7. 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/DEXO22366944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f48f4e3e4b532481b01a3800ba3c310abf2c69b6c2391b61d52c274c7c73b8b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEXO22366943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ad86a54f905e367673de947b7dfbebd45bfe892a06ed4710f02a76480697b4. 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/QM6P42353846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518a65e58bcfb12b21edb79d3ed080061f38b35a2debe2947350cc8ef450be2c. 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/QM4TX2489350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd310f2f1dd490da25a45b0df408f10af71b7946cc2da48d872359f2123c813b. 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/QM4TX2489351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dea976d137c94e26dc4c41d49289d08a01cda497202dcff16e2a311d7e8aee5. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QM4TX2489352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae90a9e10fb0f0223795570e459dff168c7bd3d74fe5d4d120c26da10ca44cbd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM4TX2489353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf34c6a2009caa5e122094c7a53ba1b2a011408239a40d99a9519c1ef5cc65a2. 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/QM4TX2489355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c265a25fdd26a7d6073e6dd7d04971b1b8b0b3ec2007f11f2b99d21d070ed30. 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/QM4TX2489357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9b3cd8589a1165326bbe06333fd6173e8c07effeabdd6a93f960d6329fc7b9. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QM4TX2489358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89b4c3d45f4346d673ea4b9e4e9bb9c28da6876edba04b586839707eeebe42f. 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/QM4TX2489360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4152a562a54c3bdc777c31d88109dac31ea44735f02526c5e96bf8f43bb0c94. 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/QM4TX2489362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a31e7c4bd1be9e6f2dd2ef741eb20376df2ba69ea67c31e3f3507dbe57638a. 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/QM4TX2489371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dcfff30a3ee1e724989891b2beedcae8ab43bd491ddc067ee595e580f96938. 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/QM4TX2489366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b5de446f7ae391103288c494d7ccc6cadef9a5c2a9cb7c07d567e9d795a98c. 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/QM4TX2489367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6955ba09d92fc5df93b5c37ef77c739db47ec400b32407a95d9eeb21cedce9. 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/QM4TX2489368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6614025fab35d083b64994a5dc638b0f41d266a61a548f237b0ba47a3d5dc97. 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/QM4TX2489369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8fadd8e7e100d93ce5da3943d50def6d95fce9a15cbfe542c0908bab950b35. 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/QM4TX2489370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9696abed4814c92c857f69c42e903b779cffaffcc4953186eab6f8e34b2512. 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/QM4TX2489372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935a00f5c5c0fc44d4be33893065e6fcc7763257b146837ea1b75b86b5471512. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM4TX2489359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3184e7c0064d26ae410672e12b72d1ed5611ed9646087c2c8f5fdf52af769a89. 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/QM6P42353837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca9a652965cb960f05099bf8c65ba8a1714260f01f89f485243d9ea546cd8e7. 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/QM6P42353838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019f8f50460318d6b02e9c578a5a7b210191c51ef6e360a26ecaf6b9fe0154f5. 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/QM6P42353842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b858ba8b9aa2ac3e96161a660a47daacf0afca8193cddc0fbd87ebd74752de. 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/QM6P42353839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe09dfb0b53a60837adf08f7836fc6d17b986408636b6228c0c4d80b4920985d. 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/QM6P42353845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c77bd9797bbdd8a871a8eef4f0e9717024f0522c65dd4314897bea53d7aa339. 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/QM6P42353841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa898300cad8fbd7ea8be6506d48c96618c65ef4926cae320fbc3ce7761396a24. 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/QM6P42353848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ad86a54f905e367673de947b7dfbebd45bfe892a06ed4710f02a76480697b4. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QM6P42353846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6753d17ed690283e75ae6c9ada515974f48ec9cb4ae472e30269d3488ad9ca. 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/UKACT2420455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f95839ec50cab2fe02448938e06b2339d110c1248e117e5789c491fc2bdc485. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/UKACT2420448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661a8f0541f7ff8c065a1172e51467d8016f1573b7d63514938fd4e79c3d9386. 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/NL8NG2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5a4127ef40b65f1e51aa2689c09fcc38b5d9b14ace0850eb05d8d89141e8b0. 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/QM6N22537283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81c0d042e73f5bc304451abb49edd20ea2d5b3aec43c1a90db0176c1a919e75. 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/CHC652400219.