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 0xa94b0f622589570847b3dc05c022a3366892844f30d0da41f452d8c5d4f6609e. 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/dcc10d44-8ce6-45dd-8629-3617e171f032.json and https://artists.proofprofile.net/proofs/artist/dcc10d44-8ce6-45dd-8629-3617e171f032.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 0x78c8409d02d4ecd5ea719e1b1da91d341fea1ab5c4f564ea8c4970f8683bd1d3. 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/CH7812356252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf62d090c8adeed154dcbcba75de65ba012736f97e1fc9c674f2a6a69f47e9c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH7812357676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc898db87174e9c4405a19e781fb4d841c334cb93cd7df47affbe3835caf3a716. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH7812357677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42849a80bad0d6203f3de33afd9a1afb53714967ba48c3d8ed2af229c9a4ed28. 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/CH7812357678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf1d2a3474d29600e0fe1f5c64ac734d40fdd8e3e2b9aa8d4656cad4ee7abd9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH7812357680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1de2cfc2090c6d3371da7bf096ad3160c3bfb9393cc4f8775ff9310000a03bb. 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/CH7812409613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c8409d02d4ecd5ea719e1b1da91d341fea1ab5c4f564ea8c4970f8683bd1d3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7812356252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3490faf8cb860ba63b05c0a34c1dcb30cf789ca6d2001fa47e37db60b691924. 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/CH7812348468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9ce45eac3334f684bc3ffd88e80064e995056be4b12485172480e068aa7dc4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH7812238376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010fd44ceca64591431e781339756f8ddc69e076218f368c5b7582550a13a468. 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/CH7812102876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d24e8e359e19f68a2f3a22ac3e9e924748741d309d6ecc06b1addc77ff752f. 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/CH7812101024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadddbc44d0c07dc1656027a6289d73370cefede4ad81aa7fe27fbf9020ff536c. 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/CH7812196404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7386924c6cb3721edbf56446c519464d87df15d40ed54212da5cf9e232a52b2. 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/GB8KE2051460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b305df126ef0dcd56c95abc173e6e826ab5db73bf02ade06534b16e0e785aa. 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/GB8KE2051461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6c5d532f6b68c2911fd684becd79f8dbef9f4d07acc947e083c35f4f764a47. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB8KE2051462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0c85aa37782ea280e5413ad89573ab02c8c2648b5ce872197d2759c45e8c91. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB8KE2051463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f1feb073b908e8d06dfff5e095699a2ef86a6560544f87b4236ac07987142. 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/GB8KE2051464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fee5bf882db2fa12ad94a6a2f02d59a8cf978717fe885ddca93bf49c873c60d. 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/GB8KE2051465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1187769446832c4ff1a88663f0cbe79649130b7834a4aed98560287f4a9fdfc1. 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/GB8KE2051466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c0da0e37b90447cc6b7421b32d72cd298d5ef4f2a8f7792f3f5ea6e5e74317. 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/GB8KE2051459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab5414a6eb5c3c961233e4148f78995c0113353f21a965c983214ece0c028b7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE1953031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323e01ca74a65e2c1f04d6764ae2db2268008ca84e9a3a882ff793b6a010aef0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE1953032.