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 0xeaacb163b92d6c2b1c11fbeb6b6862db8f3b0277a4c0d0bf54d7347a3d059410. 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/00f9b05b-8b4f-4b31-8ee8-13cbb1b868af.json and https://artists.proofprofile.net/proofs/artist/00f9b05b-8b4f-4b31-8ee8-13cbb1b868af.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 0x2257c3c04d8475dcf6130ce50e298045c6706fa28560d2bd679a7d762c20133b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6HN1921572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb88ded98dde1b8ac98e7ebc7f8c63d7091837c8d006cb0dd03ecf9d95dd8d4. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SE6I32043310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12500828fb6ad0c2f646f6e41676d1b3d472630c40a1ea1e91b0035d0488f85f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SEYOK2303388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b0822a9e2f90e087c506dabe9a6d3385c305e3b48cbdbcad07e3b4e77bcd6e. 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/SEYOK2303389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b3167b99a43991df31e97fcdff953f28a571f66a4925d829162b07a23f2f67. 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/SEYOK2303394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad58ec90f084d0f3a8d6dcb64f714de0001a540dd9f5df74cbfaba6862e432a. 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/SEYOK2303395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad6ba5180d8ed34843c80d4d462b93c6742f313a6333faaad909e6ea96e3bef. 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/SEYOK2303398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0b553bcf8e03fd0690d06c8b867abbb19c742d0a47959f4379aeda1905a076. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM7282314428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99db4a23700b4f8856ece837237c2632b30015b579343c5c9cbe38f47d78ea4. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM4TW2458419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b3edfd26784499d78dfb2f46ec8c20b42c712889a08191476358bd96652dc8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6N22482909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d61d690fe36af0691dfc73b2195586535048667f64d7a5780a5d3a28666854f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:39:51Z), 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/QM6N22461779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39a5eeb50906428830efd77275221ef3bc8df0816df7e39c70174c13b15e972. 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/QM6N22483072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbea267883f7e054413ad9bd69874f0579c7780ff1587b6eba3daece9404d0f. 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/QM6N22483081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388690dfa027491320589dfa11a225b02063f0581090eba0f7550831830721ae. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6N22483083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2045f6fb21b044bbab51fc4daa79bcf6c07cda11f72a825542bdd7e4fe5cceef. 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/SE6QE2455293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b232bc8e4931fe33b9a3dc9bfd982858742e145234438e0c23aa10e21b9108. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK2220981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe615861828998d734eba11fffac7788863f5eed99b79ec1588c188fce546e75. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SEYOK2220987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7d13b02c031855c6738b86b3031488b0069497776ef37b0a799e204630b077. 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/SEYOK2220989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9857b47e8bde027cc8d286d1b7e48078dfed890f20b44492206ed782e96436. 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/SEYOK2102264.