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 0xb4f185fc696a414513b555de44cb70e06f8c1b50bb94c89aafe29318a0a619c5. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bec4705f-bb42-4bf1-bf79-193a38f4692f.json and https://artists.proofprofile.net/proofs/artist/bec4705f-bb42-4bf1-bf79-193a38f4692f.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 0x03f8e04c0b14813b49ffe8bab6b25b0eb614bfcd604bd81a0730debfc3af50cd. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/DEA622403885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89f574247acdd9bec02f04e59bbe205b6eca8ba5e345259255db997d1601251. 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/DEA622500277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd8b7c1e2944943a60f25d3f18edfca30a14dcbd635c8d3f6afa40ccf7b2504. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/DEA622500288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977aad8c2c0891212cf7fb4332d8115191ffe654f24f3581bd3937893e16e3da. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEA622404610.
Happiness is Hard to Take - 2025 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde78b0370688791a3bac7629cafb044e19cd8863e8bc30bff103a659bd4de83f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEA622404611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3d74d5aa03abbf0f01fd7e7d874bed897a8fa4821acb0a81656aafb0b3b66c. 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/DEA622404612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cc67dba00409b4ace4799a17e7af711d9ad60bb1b54029f321d22754f2c79e. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:22:51Z), 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/DEA622404616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f138faf821b1bbc4ebd13cc622eece4cedc5cc41f2d7a0793eefaaed4e2f63a. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/DEA622500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b7aae3278ff50e02b06a160398f83cad507a1ad894f46583ab533b16ecf28f. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/DEA621100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd725ed26097eeb31e339eb7fa24631efdde974ea3d9e9e51e0903c99a9de1b2. 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/DEA622403583.