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 0xa70a7d2917d6f4e781268bd3b2752675754e1d788aa630f99950ee20e17cf8ac. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c36fd988-df0f-42e6-a580-71f4cfea19f6.json and https://artists.proofprofile.net/proofs/artist/c36fd988-df0f-42e6-a580-71f4cfea19f6.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 0x50e5e62ee936839e36b738e16795a19c52568c4ad32905afb7c218b8b9cef81a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLLT2321583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c48b3a6d03fb308754df9605c50867f14a40ed0865edd161b6e8fb886141c9. 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/GBLLT2321587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba51dec8028fcefa0172abcc424ea5ded983e272c1b7a5537a19f47f5594d08. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2321588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4882ba0b061e0ac8c651d5fce57c35bebd20e8e8c1b1418f397cc52751bad1. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:48:07Z), 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/GBLLT2321591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41912b13018300ee7e24eb54b84848b630cf8f7a938c4eb8d78e8484f2241caf. 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/GBLLT2321595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc19cea01f33d217c57ca265495ac5e7753041be7d0b07b6cc4dcf416052140. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GBLLT2321597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fef890d1dc1440efde91e8382fcb9f545936587e9b78a075ec8390aad12831. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2321599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2d127ea50b1d2a73fd6bda3d3d74d2154089dc77bf49d081286a3209f165b4. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:57:32Z), 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/GBLLT2321600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14502b9f4f1b500d9e2d4073e27b81a618f8b749d8f05e74c1f590ad3b95f97. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2321803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502d640c82a263c417dce6d7453a5b8188b45819d5d7d73d20e028aa0e342de2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2321805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cb5cddbf280f1ce8b28a114b3471aaf74d399dc032d13cc82030c98498ff0a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:40:26Z), 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/GBLLT2321807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e874364d8687653be028d0e4623a581481721aa7492043f16aaf87f6fa3ce6. 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/GBLLT2321809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476af6b91e6b7287a6c7d637dc2f8b490e301b5e08f7615f36391e7724bcf7a6. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:22:56Z), 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/GBLLT2321810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d1a49589fda7570fe8b89aa3bea51f57d2162b22bddec0eaf9f0c2919e60a3. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:04:56Z), 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/GBLLT2321811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706a645ed6e0c85f8bde008d0c0778758df454c3b234320303485b49bac98d0f. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GBLLT2321871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e6b5c18f17684bbd070f6349a06f17f72f3bfb6561d8605396826ca6212577. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:52:57Z), 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/GBLLT2322037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44b2b2d661130ca56878d71622686b4cb76d235be0d138a5cb27c4b8d8ec8ac. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBLLT2322038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4ad816b9014e62b828cd4d56dd20053b68bc66410039d8f6628829e7cc1885. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:35:45Z), 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/GBLLT2322044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb2d5f514de47a9a47f98b03e9e36f5a33c7e83a90a76f9fea5e168fdfda576. 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/GBLLT2322048.