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 0x8641557a29d2fdfd85004d494117d16b08ba69458d0568296e0a9435af3b822a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65cac311-5251-47f4-af65-fbcdceda46dc.json and https://artists.proofprofile.net/proofs/artist/65cac311-5251-47f4-af65-fbcdceda46dc.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 0x08d3d04728d4a25d8f5fcf77a8b2443d93566e5c08612f85cea895834880dbb5. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/PLB171000592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010b5521f052d00c2cd52d459f46ac13002b00c882ab7d6c57cbcd9f43b4b869. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:31Z), 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/PLB171700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fccb06b0ad41d88f05274fcda4876cf9cc6d8fc536eefd1543348f238d957d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:14:34Z), 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/PLB171700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73430466a4ff4238faa9254b22ae196f97fa7d98c52f0ca6990a5db9e3d21c6b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:55Z), 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/PLB172100448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33c909866ec1948724565e4b4f61abdae98eee8cc03dc8efbfec9b8e74c5e89. 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/PLB171302696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226d744d86f3e9f155d1151099da2b4af04c6b9e165d00e231f7d8f6b5ed4dd6. 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/PLB171302702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab56ef332f851a99f951dec62dc5b0d73c4a36dfe29176b3302535fe8f78300c. 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/PLB171302704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83c723aae7744ba06e9bb23574ceac4c235614c8bd7693c344e8d17e3ec5d1a. 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/PLB171302709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d3d90ecf30b701bfe311bb3f729ce622cf0cba3647dd9d45c2f8464df73979. 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/PLB171302711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b2929e85679a96c5d913fb8cf287d427c6ae756dab370fae142e8178840c47. 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/PLB171302715.