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 0x4a1548d03dcbe202d029e19e213cc485f3ae605d681acd2033005d0972edfbcb. 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/8db4f66a-f627-4c28-bccc-81f6f423e0eb.json and https://artists.proofprofile.net/proofs/artist/8db4f66a-f627-4c28-bccc-81f6f423e0eb.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 0x2ac35150cb7dafe0c9a42b7228f58b1e645d505da33c4d01ec83db0b548c6aee. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:05Z), 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/GB8KE2163860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccadede11a703eabdac80c7e8a5247bc403cc8cb2fbc834c193b1e7c33c4126a. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:23:45Z), 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/QZNW72224847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0a4bf1c8c8c0467a03db16af534021ad71c365ef6b5ca0722879f1a33bb2b9. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNW72224846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed48b5805c8fddfcf146b5538c1f25d473de9121ef9c6310bc8c38abd1939a89. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZNW72231266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb5c2a4bd2bcbead8f74c1cb09fbf92451815dfc31886bbe599891124f6fdb2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNW72377570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bbb53d03d8d05cea8554e29147c4b557a5040bd9e7572ce2533e9ed069590c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GB8KE2301473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deecfc4db837d7e72a294fe482e4d9653050461fa4aaac0d6188886f32a2c4a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GB8KE2303572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebc7ecb127436964c22acc62d75fea34c989e2a5e4b1b21f1a9171e4dcfb149. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GB8KE2303765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c20779ad390dd42e8c6ba6b961adcec84345a260ee8317d7a46dc1a2830bc8a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZYXP2303261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037ffa8e05f45d422017d257d27e613d32faf1ef7267c2866567d3ccc306dd38. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZYXP2303295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546960cd16f178f896dfe2d25d74d4ff4359e81b6c7d0313bad1de8d5e5b7387. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZYXP2303299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafc16dea0b4fe6395deb22b5eeded9330e44c1ec05d40e5955be1f5b01178ec. 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/QZYXP2303298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9f71de85f1dded9aeec992b7930e65f37b4770e1f10b15a7a20ea5a14d2a61. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:40Z), 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/QZYXP2303257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ea2b3f2164579307769f5639a20231cef24fdf0bf60806dab4af188c13e92d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZYXP2303258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa548f9796aec9ffabda016f3a141c604b60a0e68945b5be3f21ddcdf25d2a864. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZYXP2303259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8961a3c44612f979e9fd361f5633963b56e0dc215dcf2d8874aac65d5cd9a2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZYXP2303260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99ae4eef84b616ee92589db71655f42a0fa6af57612c8898e9bfe0304072476. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GB8KE2409334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4983ee1eadea423d42e7b491326955c15f2fe5b276483b5dff2b0ff6ee9240. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GB8KE2409673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aa17c6b93b82b21c620d75c6576c2c60bc7ca0a8a48b6ef834948e57428d35. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GB8KE2410690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc526c3225b6194ee03dc9060b64150756c065db15c1cdf5ed6eb4b77ddd3a0b2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GB8KE2422335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247a72100499927ad5f1f4530cefe6e29b6ac24400d8551c8d066f8de2f7f229. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GB8KE2426177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b651fcbefc77f739da29947822775d3cb2bd1cbd4881858fae635a95f281b76. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GB8KE2426239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dd0f58baed941e719fe5161462db2fd7ecec09654ed5c0f014ed95e8470be4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GB8KE2508149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71d814d5fba1f3ff6b9a4b40c650401cf7b868f74b231acf528d36d3af4c473. 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/GB8KE2509548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66499bec6d18cc2a33dec0dfac2c45372eaa0b97ffb247ec4a2977ebfe7c87ca. 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/GB8KE2506010.