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 0x4578ccbce396a7acea35bdde3bebef48acefe2f09df6323a074972c0b286f7bc. 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/ac66ffdc-2965-4a49-9fcd-430e84b26521.json and https://artists.proofprofile.net/proofs/artist/ac66ffdc-2965-4a49-9fcd-430e84b26521.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 0x47f2861592909d9033e352041e3a87d7190e8b9e31b1af6a2f47750ce0724a4a. 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/FRUM72200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4197f01ce83cca10b9dabc3bd22a4f907f5ae9772ad00552cfce8efd729b79a. 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/FRUM72200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877ec53d2e98da66b8b40e4286c19290970761586c59af6909df789d3a336fb4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRUM72200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b979f4775768e3525828b7e951a89895d0d7270ba86971cf5dfba3f8fa9944d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRUM72200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9607ce90287642e7a13805ad37c5173b983dcfa3e2c978621a91d83bf1340c3. 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/FRUM72200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d9ae8b821ca99330ff124b423f1ea31fb4e4202ce52233a8d15834ec10758f. 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/FRUM72200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd554a2ef6146fbf2ff8e68e10a7b34fd793ec7d9a024f70e6e376220aedb585. 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/FRUM72200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c34326e27d8b6375a82fec1ad287517a1c62ac757693f5e3ec48cf4e9f56f43. 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/FRUM72200148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b746c9706e3a13f2f40e3bc1ecaa8b3a8330eca22849762ddbcbb40548de47. 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/FRUM72200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb389d380d6b50401165829b10a5d9d40c4996922fb4ce056a12c9bc21ab3b2. 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/FRUM71801597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa553341e69f13ec8bf999eab8fa27639980a365c6e0f517fd8c03cfe99dc01e. 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/FRUM71801598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509898e4d9b0da228ca13ca7b5e321730d69892f2074790931ce0c6977ec7cc7. 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/FRUM71801599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa4e8a08a1e0c420e666e72b3537410ef84e9552afe9e43c64770ea5764366d. 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/FRUM71801600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcd6ac4e67cc4596a3c3d0d1cb03d94191b4664ccb38f4d9c3ce0c0aad3827f. 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/FRUM71801601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7241dcbd7f821efb70dc09585cacdef1a6b05c94bf7ad5ef5b07dda55e4b9. 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/FRUM71801603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c4510a808d54766b252d31d8b434840b04ce7951921fab4d0df6d6f0614637. 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/FRUM71801604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136ee4f4b65d314bc8b8300d575576bb860ee5a5bec483690281c189ab93a6fc. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FRUM71800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5182a35fd905811826fe27876337934bc3a97bd1a0fbd1fce022542bab624bff. 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/FRUM71801605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765d902919257619015c5b4edec98536f91e57b505c588f76c0a82c75b89ab92. 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/FRUM71801606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465e5fc493335675c35c4ff44f5354d060617eac289a260948ba7c86a42ea79. 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/FRUM71901636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08af06e37368193e35244b0c02d5323a10c18d8c9712dc26920857a1f21a2708. 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/FRUM71901630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1d3bf0d933aa432bade0826f8c9cba7d990e2d7eddead01d65ebbaa706b98a. 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/FRUM71901656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ca607db9d1874cf1900d846c06b594ce7f11ad49ead03bb954993ba2aac2a2. 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/FRUM71901633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb389d380d6b50401165829b10a5d9d40c4996922fb4ce056a12c9bc21ab3b2. 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/FRUM71801597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa553341e69f13ec8bf999eab8fa27639980a365c6e0f517fd8c03cfe99dc01e. 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/FRUM71801598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509898e4d9b0da228ca13ca7b5e321730d69892f2074790931ce0c6977ec7cc7. 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/FRUM71801599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa4e8a08a1e0c420e666e72b3537410ef84e9552afe9e43c64770ea5764366d. 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/FRUM71801600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcd6ac4e67cc4596a3c3d0d1cb03d94191b4664ccb38f4d9c3ce0c0aad3827f. 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/FRUM71801601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d22f3841924d7f2d78cae3ac4dd9ac481e87fadafa2662729af92812dad9578. 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/FRUM71801602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7241dcbd7f821efb70dc09585cacdef1a6b05c94bf7ad5ef5b07dda55e4b9. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRUM71801603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c4510a808d54766b252d31d8b434840b04ce7951921fab4d0df6d6f0614637. 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/FRUM71801604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136ee4f4b65d314bc8b8300d575576bb860ee5a5bec483690281c189ab93a6fc. 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/FRUM71800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5182a35fd905811826fe27876337934bc3a97bd1a0fbd1fce022542bab624bff. 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/FRUM71801605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765d902919257619015c5b4edec98536f91e57b505c588f76c0a82c75b89ab92. 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/FRUM71801606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877ec53d2e98da66b8b40e4286c19290970761586c59af6909df789d3a336fb4. 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/FRUM72200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f2861592909d9033e352041e3a87d7190e8b9e31b1af6a2f47750ce0724a4a. 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/FRUM72200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb389d380d6b50401165829b10a5d9d40c4996922fb4ce056a12c9bc21ab3b2. 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/FRUM71801597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5182a35fd905811826fe27876337934bc3a97bd1a0fbd1fce022542bab624bff. 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/FRUM71801605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ca0e916af32fc7b2559e9e50d9fdf6aa13554dc8653d1df58527ab03adda5b. 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/FRUM71800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136ee4f4b65d314bc8b8300d575576bb860ee5a5bec483690281c189ab93a6fc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRUM71800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0da51eeb2a16e8f3965a7ce077a66ab9743488d4a7cede68bf8dedd2fa42d81. 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/FRUM71800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136ee4f4b65d314bc8b8300d575576bb860ee5a5bec483690281c189ab93a6fc. 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/FRUM71800030.