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 0x51fe6ef15e40bec29821435e1027059e7b8d86e9e1015b30d517420f2c4789a3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1846374c-4713-40b3-aa6b-641ae65ad02d.json and https://artists.proofprofile.net/proofs/artist/1846374c-4713-40b3-aa6b-641ae65ad02d.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 0x6d87113d2e7f587b063ddce1f6fe2b9044641eda01313b440af9f38a16a31a10. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBSMU9818830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38203e901d80a9e18700d79c668421144235a4fb218175c9d95072b1d71cfe8e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBSMU9818831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7667572ed6f35851e587bfe045be9e187b81968a59786cc1eb8af70fead3614e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBSMU0090930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6fb1d06ad37da29832d4ceab52e37e1ca8d06b32aeaf76469c2f16089cf2f3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:55Z), 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/GBSMU0090937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbafd2246901cb1b862d5ef715008353c4f003dfc7239a2e80cb97857c1b607a. 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/GX3HH2258039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ab84b89505b3c22aa1ab6f41b08bd642c06b0360b473755f62440d33357790. 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/GX5MX2262992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b3a62213bb0023d4f062d7dd89bfe82f2c8b93c440df7dc8210fcdaf0b8e39. 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/GX8LD2242095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a76e71dd9cfea2a1ff5e2aa57bbd85f6d10b9073ddf2098987b8828f1dde343. 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/GX8KD2318663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60fe4334ab74fb2e4b6c042b9cd94a8cee42a819b9c4906c98f29b1fff91631. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GX8KD2351613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de95e60e56e700a013549fa9d1299b0799b90778f944e2aae5371e1689353a6. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GX8KD2365117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf1eab7d42af816c537cd3ed027ff2af3066c8dc0b479d63bb7321789743732. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX5MX2324420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6110c16b13a4c65b5900dd4f7aa437a11555471e4ba7d36999936f226b6b1ce. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX5MY2360467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d4b61dd01844aed2b74fb1cca02415623b041edeccc6047372d92387bf5c2b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:47:53Z), 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/GX5MY2318186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88619bfb95938df288e58f77f9a243ee1a3badc91092ac31fb23df0725be8730. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:49:58Z), 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/GX5MY2358598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06625d92e764d6b1f93daf2c4dd7064d7357e74478688b0f2c17e456d9eeed0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GX38U2468093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f4bc2b81b1703ce25518978e6ec9635c19e482d32b3a5399b5636c787a62f2. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GX38U2472000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6527464c745b28f29a882728b73b0676a488be2674ddefc9dcc53fdb74a2881a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GX38U2445920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd39f881e541b6b7d98a8eb4d24f564da658c07d6620c8c2a00d27b674464ac4. 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/GX38U2435006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236608aa1f31a5443932c909621a4e3e4d45ac4083327c73fe837f8cfc37f6ae. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/GX8LD2540543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b04c538381a65c895e4a42396fac33737291c10a47d80c34534858a00f7bdfa. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX38U2503017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9de5beced3f498bbe941b07cae4524019aabb0fcaec3da8f20d1ac0adda5e4. 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/GX38U2514300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c8f385235360cdfe01cd1bcccb7bb87da7d9a57c0753e3b5996212f51b699c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:23Z), 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/GX38U2588510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532f2b5ff1723439f9fac4ea6a4daf601ad3604dba09b404e1eee13c57b6bff5. 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/GX38U2504044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997134f801ff20e7df8270d0b11c94eae4d3a0326dfc67c0f226fff1751e6e8f. 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/GX38U2594634.