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 0x1d7c33a9584d0885293afcd3e4028e14c8dcbbd4e64c5dbcdc6231e8929bedd6. 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/06a16fb0-c2d9-416a-9ddb-faa82f83763e.json and https://artists.proofprofile.net/proofs/artist/06a16fb0-c2d9-416a-9ddb-faa82f83763e.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 0xb342524365b70fe6bf09275c35c65b773f95e3877fc62ff9249a0338240ef489. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BGA471804635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28fcb53f239b8f0610eb4ce7079c3a5fa2b8c421f1ba5bf638f93cbf71656a0. 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/BGA471804638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cef5ba553e14947584823a8eacac4a0294619e85b347253fab77abfb63a1bd. 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/BGA472204306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0d9300522c17784ebd81099472bb6b395c9685d550df9c17b005822952de21. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:11Z), 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/BGA472204312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5befcb1ccb30ea470e0a83991c0ca2e68e52ff6d959ec0984a321021c0087f91. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:34:34Z), 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/BGA472204310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186bf709ce2e10fb8ef1950e7226a30cc8041431600c66921aadad29b23e1af2. 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/BGA472204316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b714f0b78f86be8143d0cb12bb28dd389170fb6ed8860fcecd2289cd79edbc7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BGA472204313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5336b9b117ee6cd0ecc09ad2a4c0faef359d1cef92b9f9d5133cf1ba14e70db7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BGA472204315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5470bfa947bf61445d0733ea9f50c680d25bb44d03d2a3a2031f42c8ccc86f70. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BGA472402403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7614e13eb279ca6d5af1e77a3d2590a90be158930322490170ce7ca30a903. 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/BGA472402391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc970ca2852c65b63c9e8ac9fb6b794eeb878a45c4195a3a2a5a4f86dbedef9ab. 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/BGA472402392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923ca3d3cde2ee3ddc2da9c5446ffee0f1c94252b6c62d116012775e7e2a538b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BGA472402394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e0af47754d43b95c6fb9385aa020a2c1842739a76f98e518e1e88750523233. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:42:17Z), 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/BGA472402395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f781567a36e142bb08bb8919b7adcc491868df38bcc87bdde6ffe1afccf525. 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/BGA472402400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b51d5b69563368495f9902c436beeb0b5bdfddc0a03b101674b2dd3b89e4bd. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/BGA472402396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14ea29255493168dfa0a12b8a9893a66c1baf4b5a8cc2d3f508dcdba82e4809. 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/BGA472402397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a25bedaf2f244a395866e4b0b239c077d7b662e1f2580c68f58f3b04dbef20. 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/BGA472402398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a854c4770ecb72bcdce421d79dfcc69e9e87092b503e244d2193e2b83a0886. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:11:23Z), 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/BGA472442812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe79b0fa03b7e009db546afdd2ff73943f221047ac26aca25c3017d415e518e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/BGA472442814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf066b9f5afe92914afa105f37d2821ffc40d6758eef3af56b09039e3fc2cdbb. 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/BGA472442957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e5594ebf134634ffc86ff177d041a9ec156c485cedf32d341ea025df72c128. 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/BGA472442962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38c071315c93d6ff81dbc468f8805327044843997f9ce6da32e749d315ed428. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BGA472442961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f3e8583948765b625e74c75b6739931e0f93c39f6314728882415a7d63528b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BGA472442960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a432967d5a5bdc3bc3bf7314c6c35f59727e5b1e68dcb3b7983bd6cabfdb82. 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/BGA472442959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa367a88e9a642bea3d23cc1efcf26c45ef3e75247ef74ab65fb0eb81440d24a5. 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/BGA472442955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2f466ddd540fabeefa49340fe6c642f808a28bbb7d67b18355c7bd6bb7704e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BGA472442956.