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 0x9d00fb8f1a8afd62df3115bc13839a18de36c64d56323a83f66581b1d0c3f578. 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/00e5bf78-b68e-4e22-94b7-e660bd9f357b.json and https://artists.proofprofile.net/proofs/artist/00e5bf78-b68e-4e22-94b7-e660bd9f357b.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 0xd3c704abf2105af3c17521e2d097ea57e80f8a054565502ec7d1119ce3e33c4b. 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/QM7282413530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b1b432a5ad77187c03c2c4b7137d5d22ad0210a0c06204d2016aff4e214d7f. 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/QM7282413531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd481634a9a6114770d74b338780fd342e61cb0db92a711d34c8277b9040eea4. 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/QM7282413544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a544283c0ce6347a6c4081ea1d84e0cea5cd5f41a78697f3f5693a61d7ec3b5. 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/QM7282413546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad835fb1786be2f08d6617d6e97efa80e6156bed35a4507f02e54b90f9e8cdb. 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/QM7282413547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644e36e502a67cca36019cc70525b97cc6b3bd14a2e040ad6ca2543d1dda4350. 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/QM7282413548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986d4812e4846950383d605dc491380d61f9fcd1b48f9d4d9c08eb9a1f3a65ae. 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/QM7282413475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff2cb1349f24bb191e19c5e628921a3a6c8070c39cf1b7a2f2181a46d7cd39a. 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/QM6P42486425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4daf27a3228473dabc6dd342dcdc723775d4185a1fc57a3d3fb75ee7bb285cdc. 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/QM7282413506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de4e4d0eb2fe33748ae0066a8a58343a4c461d00c18bfa7328a84e4cc6f9ea6. 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/QM7282413551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4367c3a2a6cec9d76f044c9ac4f8ee882fafbf3898e9a5683e5f9773b213adc. 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/QM7282413553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c24a8fdb7cc50f199e8ce387f3c4e92ae53211c91a50dd8fe0043dcd19176b. 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/QM7282413554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f85c5b18f90428fcd409ada401db3a2cdc6e2a8c3a2a51fee78787c3b7338d. 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/QM7282413556.