1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7f48749d2924bfaab030232367aa884443da2ec8551443e5b2e6373cf85c8ebb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f56f39ac-f24a-4d5b-a6e7-a89484eb8e22.json and https://artists.proofprofile.net/proofs/artist/f56f39ac-f24a-4d5b-a6e7-a89484eb8e22.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 → block OTSBitcoinBlock must exist at that height 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 0x8ad86359bf4705d95ddc70b00921a9c1989135433baaf3912aac253a069b51c5. 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/AUVWE1800479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07db4fe324bfcec2b7368416fd192f97fdd4b3acbf9fc8648d791301a850033a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUVWE1800483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e6d0847b124b8b9567a34d7eb046c179c9e4557dcbaf83ca867be034c630b0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUVWE1900624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39362ae7c77f2aacc1512ae29c8ad29e3fe44ffb0a3473e54620981ba5824015. 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/AUVWE1900618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4ce17ce96726fe551772a459d147365e88548d978b4655386ee2cc70af099d. 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/AUVWE2000717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd11012400b38ad1500680eeb88c1949a482a6b40d0cfbd246bce045c90d990b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR9Z62000496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe193455ccc02fd6c9049f034c002e992426a337c2e1f624bf2e1c8007258e789. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:28:49Z), 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/FR9Z62000499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756176216e015a5b6602c5866cd79bf474c41b785c5518d43edc9a8ef6588769. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FR9Z62000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd03da7d56ed30365a66d0272d2f0c0d3eee781c41491ad28d41c2265060523. 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/AUUM72000889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686a3996f8dd0054d11a139b2db100c46d7ca27d7ba7253a70c68095a5ee450a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/AUCI12216602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80afd9048b4ea80e7dff5a3f3a7280aabc33f7a04a930b56527e7de9c43ca9f9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR9Z62500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0bc7156c1b25de1ff4aaacf392d926afda989c3c10a346f28317fb1da1b194. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR9Z62500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6626e713e06a3ab67cd58aae2805842a2c4be34f46d1e9f9fd715f8c4fcfcbca. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR9Z62500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d9d7641290633d2dc1c3f9624ddb59434102f3d932f210fee681130a4012e8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:13Z), 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/FR9Z62500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807639a82670ddfc88c502e1f64423965cf93b108868df05cc92737138c93ac0. 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/FR9Z62500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42af0b085dd3cc028437ff8481d4400d989b5a8aa31ef722fcfb9b4031ec8699. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FR9Z62500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4711d5bcb410200d88f2879dbefac606b6955f77a482009a27df4ae3d6ed36d0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:23Z), 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/FR9Z62500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e2d7c16039e0596f97cd32ee607c20f3afbe649950e65aacafbb08712b0c16. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR9Z62500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bacdd53103dca5db0acf779ce639dd78a84e64d94694a7d26752702a2ad2918. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/FR9Z62000497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b24b83ea73a9faaaa0966cc48c5b3fc97a1d0615f039eb8dfcd60e17b81da6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUCI12216603.