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 0xd41555c9ae8b93c8b74a22368fa3d37a8d166dc021ab591d81153819f3142f6a. 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/04e07df8-131c-4965-be3a-1dce33b813fd.json and https://artists.proofprofile.net/proofs/artist/04e07df8-131c-4965-be3a-1dce33b813fd.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 0xf34e9b20de2b5f3898e52cb3a1a113c24852497e048ae777287132044ca994b0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:15:29Z), 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/HUA612100868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd97f226e9aac2b417f677e3bf384cde4e9ff09fc28b92725003b96c1c6653e. 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/HUA611402064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e02e0d3de8eb009d3d65685209f904cd59e73952a84019601d72e9a76dc3016. 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/HUA791400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beb8c43cffa7689cfea9b0b096a4eae0ac0a0c92e9f9ce5cf759cd29f985155. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/HUA611601579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a608e478bb2295fa06f480da29f208b58f66f7460441e066c68d75fa6ae307. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/HUA611601580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9775a4f19b1a426f385182ab5a14ffaf49e2188753269d2ed57226f4491d010. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/HUA611601582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95cbd20a58e66dcd2ce45e8832b838eedc3e384a3671d7fc589d95b4e86a45f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/HUA611601583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f6249e81c57d03685e1fb51eca9e5aa09c309eb3b184a6ba18e1942d2f3d69. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA611601594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdc8bcb811773eeff0efd943db1b57e0fdd2f2732f12564ecc4511576dbe5f8. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/HUA611701912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98260beb28a7a493a4df9fdb25acfc63616b8718dc2c74358e8f57dde17783d1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/HUA611701913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78624c9008b73e637af6c3ee7c5caaf7c78974cd9d6ebc76503d877614638616. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/HUA611701919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a6c8d8e4d5682177df32fdadab8b11b279ba2c658d045a7332ada114e55067. 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/HUA612022404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfa56682c12df879fff876885089a7e6271765636385a7d2e6465e2e006bae4. 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/HUA612022186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86803baa474e6ff49da637cc524ff7a67eca22192d512501371b89b640881fb2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HUA612403405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfe65ea34256e32981dcad9ed77940780f1b563e16e3ee3dcade73352a74150. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:19Z), 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/HUA612403406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33bb65e77cbc51b2e6a22a842c829d15b31b502f00be54620c87825c99cca22. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/HUA612403407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5489b9bdd2ca25321e002a46d97fb55963c8087b5b338c21cb58af023efb3c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/HUA612303346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5c8453f89cf26e9cfc1df0b553599b5c07723565e6f6a2a6b62b0445d60a95. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/HUA612403416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb91d860d61c6d4f2e757408134df7e83aff34c4d249f7746fa3a280d8558ec6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/HUA612403097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba6aa461da705971aae4c4965a57514f754f02e899ad89b6884a17e7616e868. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA612302607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61d2ae162082ed39a1644b7a686cbb93e98e01b6d80b77c8e98888bcffa2875. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/HUA612203029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc7e266aeda2af2ed5b352f410f9166ffddd6ab81807a619d53c91b83ea0c76. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/HUA612501013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8a28cae48b8e4c96929adec948500a1535b878687f46fb805c85981e8ba76c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HUA612501015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef96579d8355632888aa626acf46b9a5fca8c0f2199333c6b4f662bdda477056. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/HUA612501016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccaa61284e0eaa13acc4184e83b4c75ba3ab1d1d16d316070b9b1199f4f3727. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HUA612501017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ca8796c6410c82ca7ef0258008b84dfdd6d9d183ed2531fa0cf2535c944d39. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/HUA612501018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad31e0b34b5d74d28bd43a08f640f1c6e1bfa10eefc803c5fb4f6bf1de237adf. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/HUA612501019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c8853e0ca251aa5a0e9efa4e3051335dbc332ce28241aab7b5993c216ec204. 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/HUA791400435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c8853e0ca251aa5a0e9efa4e3051335dbc332ce28241aab7b5993c216ec204. 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/HUA791400435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b259a453bdcb0980d05d786a05ef0fea2ee0aab6b644fc688fb13be2f80bcaf. 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/QZHN82192250.