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 0xc89dff7b9a993c7abc2cd99fddf5b28e16be42efa6d2237fa8eb96503d275868. 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/77dd975e-651a-481b-955e-ca6437de6a67.json and https://artists.proofprofile.net/proofs/artist/77dd975e-651a-481b-955e-ca6437de6a67.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 0x73516e739b4dd1218927dc286c7b2c48d093b34229dbd871b9d95f5a09b32ee9. 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/DKAZA2300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58ef2a8fc3c6cb3359ebf8f63176f79ed5ad9716128c64c521b6359b3b03e5c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0253ed007b6fab413769e52ec11183e958449c99e28987c38a86392c3ca57159. 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/DKADG2400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6741a1ae059c67acd07921a7f07cf54fc27a4ba3a646a81208eb5db7562d83. 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/DKADG2300445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b7791f9e3fdd399dba67ab86d667c634445ee807bdf7eb677afebf48463a52. 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/DKADG2300331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7531603b1287b520b65b4f18c7e420e6a6e884de501c92bcda124eab09d86e6e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKADG2200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c01e123e05cd6ec9b0d471ecc59ab2ef4b6b16f0b285567bc32045e913aef0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG2100429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50ad03c7e203b683cb444de35621e403c52cb88db9d2da3f97695378a76adcd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c26baef5c034b4c5ff50fad7c5d4e4cae85538da6ab4be08d19fbe0d7c1a30. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c48ab2fb59b57ceda6f0f4acf4239e539543e1af3cbc4260af7c3473b1476cf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKADG2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6548ea2ab716714d34ba97087447fc50e5323e1eb57183ff2cde175ae5543d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG2100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70f03bd7888b7463107018480aebab91955b5c20ea246e32f8d318783ca9846. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKADG2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c48ab2fb59b57ceda6f0f4acf4239e539543e1af3cbc4260af7c3473b1476cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c4cb0674b23fa0b91b646204d851f50f3394ef7ddd42066e81926002adc186. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2000582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d7c9dd7900251c8f915ce8c125ec46b4b236cb61183dac057cb82ff4e87e83. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2000431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d20b1ba129c15c5cdc44b8be197acc923f4cdf75103311fc123120f0b994f1f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG1900574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6362129918fdb50982c149ec8f9709fe5146bb5343d85a31aa773184bb501d8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DKADG1900363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9784fd743ba61112eb517ceafeb9d48a5f028e486f9a70937a24bfba61091cae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKADG1900295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bd54e817c6f804f5f7ad01ae35b085318767f53d93d5ee8aac54e5bc31e3a1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG1900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d035c207a01d19d24ecf45cefdceb062b3a6cd14f1beefe8ebb53eff71aeab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG1800862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd058e1a0fd5a25cbc84a7e4305f4f74f9c96642685f7d2c77a7ceefcd16e17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG1800568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea72d95b133cfb3800c5135e15f96f5bc53742191509abf1e43463fb2beed10. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG1800447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34da3b909efde6befbc1f3099c63f8a4e5473a45f1a828564d8357829c359a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKADG1800323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc30eb7d9b180d1a926140db981de5812c4d89d6225c808a1accb1ddbdd37d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKADG1800081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541150166520c2a68665be037112246567b2c24454fee157250a490d49e06584. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e94b34d8b198a0affbafcc7b2be4559f150312431ebbf80078b7bb3bebedca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKADG1700386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b34f59417055cbe8a2478ca69b4f69ca051f492ca81024ad761e6acf1167999. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DKADG1700314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb0a1e9a79546d01ac8fa3ecc2aff5d6ae2041553fd12382c6e6d788f47c9b2. 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/DKADG1700200.