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 0x363f0162df65b5775d33ded93ea4e1afeb6fa14213a4f70e86d4980d72ee8e81. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2eb5a592-e29f-459a-9fc2-4664b770866d.json and https://artists.proofprofile.net/proofs/artist/2eb5a592-e29f-459a-9fc2-4664b770866d.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 0x6db5949726daa8633bfbcc26229d53e0050b6283ceaf8c515166ea60b3d40aa8. 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/SE4RG2402208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e1ef5dce203881ee19b8baf007f8e6f0867846539944e1ab630511403877b4. 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/SE4RG2402055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a42b64149ab43fec6424729b72eb6d88067049924becdc85df4df3e0cc0b74b. 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/SE4RG2401677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4195b4f03fe0864fbf03069e5da4b86c713d1b0046e6bb95499bf8751d170df5. 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/SE4RG2401379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770e0d18c496eb91b7f4898217bd59b648355ed461d4e872d366926eca477ad1. 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/SE4RG2401121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83cdc1d67216e70658d0ec6eae8cba9eef8ce2533cde5035959b87896b67774. 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/SE4RG2400908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5013b50ddb03f5f05e2218927f1300f277f8ec814bcd9a409bea9fe0e842bd12. 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/SE4RG2400509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e17ba70ce156c6b5e319bc113b2e2966202ec7b8393645e7d1f47704fdc94c. 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/SE4RG2400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294dc066d76de12b1d2493cd10c3254802711dca6ae7d5980b401bb87d28c181. 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/SE4RG2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c838fac181eede935a01a8c2411e5d9ae66fe255d2309ccb162ef6e10bd98a. 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/SE4RG2306780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c17b4e7e3dd0c331ca1aed9e12e3b1f6ed3922dc434ddaf25c3ab1be11ce075. 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/SE4RG2305933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e124030f3f0540993229c7ad3115da8db82435406a2fab883c1d312b58df000. 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/SE4RG2303931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350a7aeaba90b11f193ee0dc6124f91a29dcbe9f5dd6aeddea756214afbb9f3e. 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/SE4RG2302669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9318bd4d138be14540874eba68757432c9b9b61707d6db33225b48394b6f8941. 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/SE4RG2302670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf379463a1d8455b01970306baed91e8b0ff209043b56efcb2647d8a13465dd74. 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/SE4RG2302137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4065020906c94f89a6004f9b0cc22acd17fcf97865d97739ee858b8970f847. 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/SE4RG2301549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cbeeca49fe766cee33f8b575656275c22a9d5ea91d07bc90f9e60ff1c3f5eb. 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/SE4RG2300392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f634c7dc2796b89b50b5c1ec3b36f21408027cfb96cfcd007e33753ca0b3f6. 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/QMFME2216435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b2381285fa7baf165699db6618c2ec3e7e1a2ec5e5471f680a5a1270e6d726. 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/SE6RB2204332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0428ddd8830c901c152ede3d5722eb33e25e98942d7ac8308b0602a65e9a2b96. 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/SE6SA2224612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc507de821ee560cf367973cfbbeb82f3eeb997b719ddbdb0e015fe4430cdb6c2. 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/SE6SA2224609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc726e2d6e9003774daf18ba8b178161ebaaaf5c98c878753c94122b4dfa375f. 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/SE6SA2224602.