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 0x0e746e318eb4bc0744f8014e6f8af8c6aac0d0a7776efbac10036d57e8c27b77. 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/55870d6c-2e4b-40bc-b725-110020f76f31.json and https://artists.proofprofile.net/proofs/artist/55870d6c-2e4b-40bc-b725-110020f76f31.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 0x4e9c23d722984df9f243c0c9fb84f43468bb6cb32dd2e76bb849b75a6600bf44. 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/FRPZ92420080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebd2e0c0c24942f531d2df7b93265c01a551c43cd830c8d94595e61fe7d73a2. 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/FRPZ92420090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9808da4bf96b6d490b120a3b6590747245484becc5f18fde4eb738530e3bf8f4. 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/FRPZ92317190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9168a8d6eadcfdcca39e2a4ff5b8084dabbf7528997a45822fb291a2c6779df1. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FRPZ92420100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf129665638a263c151f43d85eb53ede7e0b9dc76fcafbae7b7d19f6425e32d. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/FRPZ92420110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c979083f9fcb45dd53224affaa929f6e98a96a9b0c8faabf20f6d530d5d03fd. 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/FRPZ92420120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbe6767b889077a52ac4e2aba56e95385beb5dbdf4fca27c1b4fcfc5806ef82. 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/FRPZ92420130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5498116098b326a24f1160762801261657ab5e3d1cd59439657c1fa86c9f646. 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/FRPZ92420140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a861599a1e682edb0fc7b2319391a011bb4fdb198ffbbfe29ce1ade81465b3. 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/FRPZ92420150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f4b6827b2e81c9e78ab45a6eb14ae8cf6d85d9db34e0384930a04fea373d14. 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/FRPZ92420160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50907a953216af6ca77893a5754e43c7d61179c107cf0c1736ace323ffc53d5f. 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/FRPZ92420180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eb308eac7b46cfff87faa96357ea7e405b1f7766fabea49bbe6126d3f206f5. 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/FRPZ92420190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36222915e5dba595aa7f8c3611dd99a2d53747280239c6478f8d787c42273357. 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/FRPZ92347740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a38e54c1a260c8ac91e642c53f5cf9a5b346b80b0b892c3b59aa2600e356f0. 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/FRPZ92420200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0544a046c4805a2116d46f4ce6c6d1e2f83d55a2840be50163a5d66566ba50c5. 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/FRPZ92420210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f4b6827b2e81c9e78ab45a6eb14ae8cf6d85d9db34e0384930a04fea373d14. 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/FRPZ92420160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c979083f9fcb45dd53224affaa929f6e98a96a9b0c8faabf20f6d530d5d03fd. 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/FRPZ92420120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbe6767b889077a52ac4e2aba56e95385beb5dbdf4fca27c1b4fcfc5806ef82. 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/FRPZ92420130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eb308eac7b46cfff87faa96357ea7e405b1f7766fabea49bbe6126d3f206f5. 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/FRPZ92420190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32598c99c7ae30fb4eb242412e276c4846a024620466976feeb5f0363393a42a. 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/FR50K2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36222915e5dba595aa7f8c3611dd99a2d53747280239c6478f8d787c42273357. 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/FRPZ92347740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032877b8470eea2c67258012f9b931277ef273c14b51707fae0224e620e65baf. 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/FRPZ92324400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9808da4bf96b6d490b120a3b6590747245484becc5f18fde4eb738530e3bf8f4. 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/FRPZ92317190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b9ddcb33c6302a779b3164ea59ead6dc674da586c19671a9670da62593e106. 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/FRPZ92304010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936bd32a9e9800aa5d4cce509539dab976d97a320a38dd66bcce4ac2efd149c1. 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/FRPZ92228710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e0051733276b9858ef16f4d7aafcad24abdecfd9c89d8b0c602aabd836c6be. 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/FRPZ92224840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e9909b424655593608ff6518003b02340cba8ece1be453f641f15b4fbe09b2. 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/FRPZ92222060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5271989884a66081d29c9f3c17a5c200ffbebdcc96b6ddccc47ae1fedfd66793. 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/DGA072419068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03657de9c90360f6ccafcee1eaa5945ab1a27015445f400a0e274d9b860f778c. 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/FR50K2400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962dcd92d5e9c0d61b1f477425935d11279df6be0c3881c5cd6ce905b4ecb4af. 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/FR50K2400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5f5e671171f448b6ca66314b1063b2b666afbb2e2f8bb562b06719c66205b9. 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/FR50K2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c459225298a363d27da6b94a9ee4b06fc11b343c5d244193b0c25aaa3a12ef. 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/FR50K2400160.