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 0x44f0f2f67eecc2cdb363ed110bf07433563157f32c96415026dca2b457375ec7. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e803f5ce-ec59-4ec4-a07d-af2cd0ac209a.json and https://artists.proofprofile.net/proofs/artist/e803f5ce-ec59-4ec4-a07d-af2cd0ac209a.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 0x698dfa44c55d807f6e68ae4ad3e5aace1313834b227e363910054be70c64a640. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZR32200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3773767f9ce7b04e53190be5cfe721dd4acf51c41842f07c9841022aa32710e8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZR32200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcfcadea3cfae2ec64c73d2ae5ecda5dea6799a3f1716a6e93125a1d6c2e5d8. 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/DEZR32200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32075d3223acdd7eeab5b6868c83b432e9b84de2ee8786ae18e25954c73a66db. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZR32200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eb57956529e94b4aa1446e1a72d590b4812a07478db7f6e0000fccadb1ca3c. 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/DEZR32100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d01062f82388668a7a5e100b8bd680fb6d3f9158d74dd4fd21cc54cc67cfa61. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZR32100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2495b0eabb08e97765f39c66553603ceba665b4dbe56c3c4679baa1e1b2f9d31. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZR32200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaededb0d9642ed8ad562d4766f36ecf500d94819e6ba369024c4304aab854e81. 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/DEZR32300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76ec98144c1d0811d965291812dd8021f04dd15c6582fedc857b25066b21b85. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZR32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445c8e6fa825d0811e34079c38be70a0f6e35ea94acd2a8a2dbd00ddb9c1aad4. 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/DEZR32400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3b6eec7311debce79861763bcf84d31c74cae13f9bff67bd6b63fd38a32a07. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZR32400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76ec98144c1d0811d965291812dd8021f04dd15c6582fedc857b25066b21b85. 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/DEZR32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaededb0d9642ed8ad562d4766f36ecf500d94819e6ba369024c4304aab854e81. 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/DEZR32300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcfcadea3cfae2ec64c73d2ae5ecda5dea6799a3f1716a6e93125a1d6c2e5d8. 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/DEZR32200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eb57956529e94b4aa1446e1a72d590b4812a07478db7f6e0000fccadb1ca3c. 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/DEZR32100001.