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 0x6238305078cd32df8f89e1b65c26daa31e4b8e45814a76cbe66ff5f7a2ef0a05. 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/e8735e22-9e6b-4069-935b-842b4fcf6694.json and https://artists.proofprofile.net/proofs/artist/e8735e22-9e6b-4069-935b-842b4fcf6694.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 0x514af0f6dd3f1b23e188edd09df0152227833962cf58c5d10ba8bc81da1d7c91. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:29:10Z), 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/UKEX32233050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce36a31eccf5df105d34fc355357dbffdebb5b67fe6fd92d081705a620271d42. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:45:59Z), 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/UKEX32313689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e60f656e34d39a9ea1d325606d0d9380bde3a9f2fd64e4f21478eee99d504ad. 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/UKEX32313690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7747e6ba69e1aab9628b72396a1f083454677d04e7ce3662465be7e24a2aa3e3. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/UKEX32313691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45be3aebae2124942ded1cdcf376d78578cda6cf72d0357c2b342c538af59557. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/UKEX32313692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b56158a63ada06c65f53f820c14af50af5225dbe8570f81c5c77b65dfc0b97. 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/UKEX32313694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfacf5e4a4033b5dacd9bf9f6ce287fafbe3d10bb569af4ebdb667e2313cf9ec. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/UKEX32402526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfacf5e4a4033b5dacd9bf9f6ce287fafbe3d10bb569af4ebdb667e2313cf9ec. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/UKEX32402526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf622c14f4501953e806d8e865b6c0210c6537ec5452b9713ec9fb6347da65501. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:47Z), 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/UKEX32412520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e8263476332e35e9a306de22d86b61c0b05cef34cb579de9b98bdf2f915894. 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/UKEX32412521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dfd389c809f542a1125bc1e9833fc3c09af31eb432d654feb90020d0c9df7d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:28Z), 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/UKEX32412523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe916d13fc11b937f858a7345fc145faa411911a2a892000b732a49137d456f1a. 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/UKEX32412524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13736e0ceffec61229e57b8bb0ff4f8f76e4d91220b0831cf557753f3eb3cdd1. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/UKEX32412525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43317884a881e1b243c662fc9c656814fb6ad91b8ecdc8dc9b6b54e79d50100. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKEX32412526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3094d97cacf192d857a3532828d6e82ffa782fb9b45ec9f438852bedbeddbe98. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/UKEX32412527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c729fe14702e67013564be080cf0c7b91dd0a9999c7665e1dbe671f58ba6792. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKEX32412528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a87d7f2e3015233820e689bf21a5cbc3056390c720051f5365f3a8858b2f168. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKEX32412529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acfe37c5813395c4553d7ede2d391e2010113a5e09db0d6bc1857e3cfea89d0. 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/UKEX32412530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bbfc2c0823223c7116a3106f012f7961c536913f0518bf61e2b6e78113e974. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKEX32426022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce94a48006ce0b928a9f392baa210d8087a5baaf7f894ea64d5ab2a6af188b1. 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/UKEX32461883.