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 0xe198c549ae992b56e3797d614f7efcafb1ab2e95a1091d9fc59e6fe63c123df8. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a08e160f-6735-447d-a53c-2b3070bbf70b.json and https://artists.proofprofile.net/proofs/artist/a08e160f-6735-447d-a53c-2b3070bbf70b.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 0x22e296dbfaaf0dcfabef637b44f7fe71d827e013f174aa231f656df9877aea23. 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/DKC991701501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd243a03d003cf5cd44dcf0a64bc140f74a46bf5dc4b89a1c2f04c51379a2ea36. 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/DKC991701502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ca3df723378caac85da938c6a9463b5f79e598290100e6c4410124a22b3159. 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/DKC991701503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807a4a581127304e38d89ee2358909bf894ac3425421d9dc106b0b7c5097ba32. 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/DKC991701504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5825aece5dc41a795337b9f72b72f10470fa06100841f1c2ff7de93bc3bf961f. 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/DKC991701505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144243beb8d8f859a43684cb1e3067c9d4348b210cff8948bf1e2c1d3af0f306. 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/DKC991701506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a2e4a25a823b9d53fe0d3a29b0347d4b8f8a55dab31da00333674dfe48ecaa. 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/DKC991701507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45a4e595bfe2f09d2068b26800d832ba30204fac148903e8440c0e84db56cec. 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/DKC991701508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88af95a3fe19a88bf0a28609b33473bf334e775fe538def961acf0450790e0a0. 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/DKC991701509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a39a0fa15d58c95851731380847224e10b76470caaf47edb9d437c9d540987. 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/DKC991701510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d1d5345152469e4d79641e4375243a22cc4436095fd5ad28fafe329f01a5d6. 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/DKC991701511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55b78271e44b9df8c122e269d7549811659500477e4bca8a3d7aa288dbdd68a. 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/DKC991701512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78de5f4d10bc9c630bd84124845375c52e3484b4e2fa99f0ed855abb6aa7f808. 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/DKC991701513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f927c37ee08d3566cc2fb3e1923a029a347a4ce81a944803d685c51b09406f. 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/DKC991701514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfbec29b0844ee60360b3840c50b023ee395343bae160369defcdea81d35008. 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/DKC991701515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb257a90953ba8bc7d2a2a0ef61342ac9fea7c10e870337f270efa812ac7b840. 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/DKC991701516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a43d5389a4c7bbc2090e0b9caf9d5a7f4e06aa95e41d0c587fd025df44447ed. 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/DKC991701517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9ece7542ff3317b8281dc42c11c18b0ec5deae179ca1c0f06f322a0b2c02f3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKC991701518.