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 0xa96900bc7c3ac4e0481949a357693538dc305d643e5c6d8877998ee1e1741aba. 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/b007afe5-a768-48a5-958d-223cb94cf907.json and https://artists.proofprofile.net/proofs/artist/b007afe5-a768-48a5-958d-223cb94cf907.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 0xda33a81bb89b9f1613a98824d7e7d52ad1b10b00646706c101edc00ff733077f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:35:34Z), 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/ZAJ811100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda33a81bb89b9f1613a98824d7e7d52ad1b10b00646706c101edc00ff733077f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/ZAJ811100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c8bd7ec4647e8862d387d59faceb2e8294f5974ae61749de7cdb5fc530fd30. 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/ZAJ811100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7620a4ba8129c8d768b5cce646efa87e17e469d10f6827505235c864e32deb94. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ZAJ811100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d3569d974a73dd84a2685ae3bf12cac17e448dfb7bc00027ea62ecec39afef. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:52:48Z), 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/ZAJ811100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d3569d974a73dd84a2685ae3bf12cac17e448dfb7bc00027ea62ecec39afef. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/ZAJ811100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6316cba0d1e091cc6a26f50d19c662fd59edbb3b16d710e9c47611b6223949e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/UKXN22049357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6316cba0d1e091cc6a26f50d19c662fd59edbb3b16d710e9c47611b6223949e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/UKXN22049357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bed33d097f1bba4c4047d87711df59dbba5d7ac66cebb6edf3593f6934dccdd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBMA21861084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bc67ca8e954d380d9646577afdeea0d8e627a992131d484eb4d49347fafe2e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:46:26Z), 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/GX3Q92097263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bc67ca8e954d380d9646577afdeea0d8e627a992131d484eb4d49347fafe2e. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:30:12Z), 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/GX3Q92097263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1377b8697bd24f22180edc1c7dcd308c00a547d85ba12937f4b03b85e66f97ff. 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/GX3Q92098346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1377b8697bd24f22180edc1c7dcd308c00a547d85ba12937f4b03b85e66f97ff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX3Q92098346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8936f82bf267f40c22e7c423ddce4de4f0b999c4fdc50ee77d429140636b429. 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/GX3Q92099784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c70dc4c227f3a39f01911f188f03727b751c6c1624be7ea91e7d996f1ea061. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:37Z), 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/GBMA22480648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95e328b6f6c0faa03fb4912f08de529f593f66a93cdf15465d6d60987db55ec. 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/GBMA22480649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5387239d4311c1327f7f22d026014813ca4971f587291ac099a00f711013dd18. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKXN22587946.