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 0xb48a47145f2a72780a32871048c6682a4f722e9eca0d6a4b3344eb16fb9900c5. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76b2d947-dddc-43c3-aafd-e7b038aa6f63.json and https://artists.proofprofile.net/proofs/artist/76b2d947-dddc-43c3-aafd-e7b038aa6f63.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 0x229834d7d8f80671e5005818f4ab5c8ec7ca2961d962b649e3fa3de4ce7d6345. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR10S1705287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeab8671e70795e821f2f330705fcf490361c0334669de003eb21efb50d9a914. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX201610569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeab8671e70795e821f2f330705fcf490361c0334669de003eb21efb50d9a914. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX201610569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e54e605b82ba9220fd40a6cf65657748d7bac253b2ecb72e6054d0964e5c63. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:17:44Z), 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/FR9W11925392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44102fdddd3bfd8f30672c29642f1c8c45770360ec099c05167cc49a360a1c6b. 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/FR9W12015666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5820f2c3cfe6e91111d5f9c4bfb71a5b3c77f38d8dcf3d6f15acc0e3acfd24cf. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/FRX872270967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ad9fc795688ce53b27529d0158c47a6b32884bdf3be56424bf7a81edb1692c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0M2316322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f038ea5d7f1ff4e660b76f4dee99073b212e08b31af6138a1acc6a9bb53cfeb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA0M2316323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41113a9249efa005bb1e36d702cc4445b1302565ae310d143b14cfc1d784f437. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR9W12367219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af6c073ac2f4d4921d5aaf06075507a6049ea38459ceb9d0c50c1b9a679c67. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR9W12530378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472bec0ac23aeabed03d70cdcbf878f89dba3e6478294fc9e9b5ecd480edde04. 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/FR9W12530380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b397333ab347fee1c79d2521ddff67386216eab066b061d9faa24f001886217. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR96X2514734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f1db4ec0cb0ff73db4d247eccb3f475829aee662fc9b42e60c65cc94827b36. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DGA0M2316321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b26bb7117bfa9bcf38919706b3481d54eff6b9cc5d799d0b6efebbdba60ccb. 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/FRX452388821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ad9fc795688ce53b27529d0158c47a6b32884bdf3be56424bf7a81edb1692c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0M2316322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab61465a5ff2c0993d40e0b52d1f5d760008c3f5716205b98c375d5bec8ed490. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR9W12530379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715cb503072cee7a897aee6ed09cba3b4528d188d2a15ea45dd393d60aeb4ded. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR2X42498258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472bec0ac23aeabed03d70cdcbf878f89dba3e6478294fc9e9b5ecd480edde04. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W12530380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc123786035df2e8a519279dc5e81b86358158dd1465d10e0d4614ba2a6b30714. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR9W12530381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cacedd855436a8d96c803911bbb766a4c591c4c247fb33e389898827ac3caf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9W12530382.