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 0xb3b72532f7230625899c6b67f9c96558bf939f4c0526b072f17305bbc1ce5772. 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/984cf524-043c-4e26-9080-98d2db3b65c6.json and https://artists.proofprofile.net/proofs/artist/984cf524-043c-4e26-9080-98d2db3b65c6.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 0x7e72204ae6928419439eb63ba7da484b7ac0c57379a5fbe284885d2eaaad330e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:38:10Z), 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/TCAJO2582530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcec3fe511ec9a89ff6cbf045707e885686af30b8a7c0bfb09530b9b0246009. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:50:50Z), 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/TCAJO2583988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988985fdbcd5dc44863cc2ec13c117e656ff93ba12389aba0a13719aeec2803b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJO2509889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cc065087aebb29c4ea6a4599e0252fb0c60c01d24ff3f9e49c26b01c06f1a7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJR2526441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e291c938b64d2b2b29daba94ab4f9f0e6b503923643c9b5714c4fb997cabd67. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:22:29Z), 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/TCAJR2526450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176d9fe14ad3b25af4b544886b658e61379c30657c97e4f8e655d03cb08bae2a. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:06:29Z), 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/TCAJR2526471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba39bc20c52ee672a70bf92039af17bcc0fb2116702b00c5b729367650d3e83b. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAJR2526494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3488e7e70826ed470e2a198ad4e3cc46c8e1b662760afbc9c046a3a7de6d72. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAJR2526500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdf2bf082498cc64ea97d7e8a7758c061d3cafbd12ea21433665c4e6982ca3a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJR2526504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2531c8963695437063a6bcdbc4e8fe41ab8c8265938d7d9e8a4538391ef13233. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJR2526651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f7f2648c0d9fe11a2738aef9f7ded51aaa7aca0bc1f9d9da48159519f1c240. 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/TCAJS2526654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa985a8bd5f62fef097c973ab3f1833ce416d9be2473aa5ab0acf4bf2a9f4f02f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJR2526663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2999cd6fe144c13c2145ebe987806e9e2a82d470bf87aa8656a459e141a94042. 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/TCAJR2526672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35553776098b345976d57a12962b94e2e1bf651d9a35d844a24bbace7d0a4d61. 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/TCAJR2526676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153974ef41ef460cf8c5ceebbdd37fc26161b854ab14a749ecaf1fff56e62a95. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAJR2526679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabf92fd4c7b37956f331e717553699695d257fc577101efa7223d64709b92a0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJR2526685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dfa35b2db80d26dc4950bbff23656ce29f79d72bf022f214ec6414b3e15212. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAJR2526687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890ed1f7b7650fdee717c88c4801a337d60ce93b46020a6d1926227ede8e3b12. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAJS2526691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e57cf0487bb5aaa1da0d1a4b15230788433fad772e9aa2a1a9c62f9da93374. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJR2526697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff7f49904eb7b37a170056941b8511ad282f7b1833bda76f661ed807eafa059. 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/TCAJR2526710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac283102bc6b77cc6389a1ab39f39861cd2fa215fe2ac90d9e80f5b2ea3d718a. 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/TCAJR2526717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d448fcb0d32b595c59f64d3c397d1e644baf6273fa41ef76235e786447b2c7f. 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/TCAJT2523694.