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 0xacc56d6f8060b52a76a4f686ac7e30944e7fe38a40014692e5ef9dedbf2c1008. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/122a803f-3a30-449c-98ca-418dc6c0c021.json and https://artists.proofprofile.net/proofs/artist/122a803f-3a30-449c-98ca-418dc6c0c021.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 0x0427c1e7f96ea2e40dc631a4058f19d31d9a6fd40e85427ef51acd0d252d4084. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLFP2538237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc77ad6c569db6db3f1c77804756fe1b59a799f414ed5d2b5db0663a949b147b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:25Z), 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/GBLFP2538238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1c21cf89c0af71336b1d66fd4b001813006eac89db0cde18f94bff2a4d4dc5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLFP2538239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45990b51477a3afeb866fa039db8df76cf99dba9ee3f8202c42324e5895a0fc. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:44:33Z), 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/GBLFP2538240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123947383e1cc746ca89f302092d7119f16a85bc7b51dc0a4a3bbe26c08f6944. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBLFP2538241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002311c482ad1d04605e7e36c798b6a5d78e69cebedd68c7d074666c31c5369c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBLFP2538242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a39401377871d20670a0e3217ec7867344de907f8a7e3e70536ed69175330d1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBLFP2538243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc0bfc7eba79ae9a9c6337c2eaf15326b93c58337e459f00f64881966e974af. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/GBLFP2538244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ec38a7802140e8e74f00f8005ed6b9ce4c33120e32e0e33293aaff2928dcc3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLFP2538246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7364a1c0372f2a7c6562febb0f1f1f17d644970922b3b0a81d31b7976f10827. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:14Z), 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/GBLFP2538248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598d2e6a5167f38c5a47900b5a0ad7319b93bdb9bf619c19094414e55b258567. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBLFP2538250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a53eaf7d7de4adcb0f3be884f6869c4f3a46a495fde27fdb56638c66a6b522e. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:49Z), 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/GBMA22518215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19890bf0ce82ed1b2a3153445c5a9ad17ff54f7928847179aa5f11982da2cfe5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMA22518217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfbf3c3c51eddb57a3bdab4d5978e8a708ec12ff4fac0c4aa40a8a4460f3597. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:42:56Z), 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/GBMA22518218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64224e525f875d2c206c48ad91aebd52e8d3df840fa76e42d5783258280ac978. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBMA22518220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09546e8262deb8ec2574db4128e5e5cd91543be81faffd410a52e2991f1bc511. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMA22518221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf2f7111e558eda795f53bd4c6453bd00cc67a91023f98b4d5eec88a420eb40. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBMA22518222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807879f4ba8679d97ba348acf41da012cf65a1b31e61a1a0b60ab02d142386c5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBMA22518223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25ee99818369ad4f41614e3bd012bcc6b96ef66dd6bb30e52439a99e7a0ac22. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GBMA22518226.