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 0x1dae306c0ae1d1550901d8cb6064d54562201eb974e062e52716d929fd6a40f5. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b88a69b-62b4-41a8-9636-b18a103acbdf.json and https://artists.proofprofile.net/proofs/artist/1b88a69b-62b4-41a8-9636-b18a103acbdf.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 0x014b77d608ef708d63652b269e57733f6dba093f57968a32555471ecafaad03f. 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/GXHAF2546013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562b5a41f3a3519113ea2511675d34ff9fd05f0a82c276e6aa7bc71ad6b3616b. 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/GXHAF2546014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee77135912fffee77011cab6b3ca451aa01efa4b0a18209349f2c1b02a47562. 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/GXHAF2546015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7507cc052dcc307e8fd5c2e355641a051f6830464c6f4ebccc2cff2b20efd3e2. 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/GXHAF2546016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1939973325718f42057fd8c9fbf841c1a9a5a78b61b56aaf4363c44b3d3d388e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:42:56Z), 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/GXHAF2546017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92cdc7663a71122280d3c5d5f00e2f9f38140cf9f39abc60b51730ee78180ec. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXHAF2546018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88232c93ef608661ec92f55a8e8441529a5dfe0fbb398440929c453431fa1eb0. 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/GXHAF2546019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdcb4929c44ad4a0889f4342f4dd598b3583488eaa004805348364cd42cabdf. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:23:49Z), 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/GXHAF2546020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe9fa209397cb7c3e83f0f43a9255238898a244784dbbd6c5761ab76bbadf3c. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:58Z), 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/GXHAF2546021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe836dbb517c4afdde9bdc38ca307becc12cbfe3b00c75a5ecb117cc3ffba524. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:44Z), 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/GXHAF2546023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49126bd84df509db854d899b320f305ef0c76c80a0501b7faf85d48eab1b3b. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GXHAF2546024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57c69d228c69aa3917cd4d010a92b8cf2fda842c2dde47607c330ec4e8aaf62. 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/GXHAF2546025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a87596e09ecc335dc15c975a8b2fdee8a0bd2103939858a264bc27d311da37c. 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/GXHAF2546026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583fd53d57c8875fac5abe9f531763a3036430aec4175fba398a908d95bf528f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GXHAF2546027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd704d7ea4e8494beeb1c6f40d2d2f5d3aef840f7d9091c4230ea6e997a1917c0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXHAF2546028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7997701297f5a05f828ca5e16dc6ea257c0bd7cac17a9b97a2b2bc5a54e7aeaa. 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/GXHAF2546029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0608e0856d3a87d492dd61c29e75876a10a9be0fd3e1d628e9944449672ce4. 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/GXHAF2546030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c2a5ff86bc8fe494d9a70366042f758bb4f80f241b2648c4f64057c56c7c85. 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/GXHAF2546031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1365330d0f9ffd5a10aab383dfcd441480fa7dc7d408b7a0d3911843219b42ab. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:34:23Z), 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/GXHAF2546032.