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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee76fba46bf44764c635cd273694e75ce3498a192d22f34adcf713f2d14b8819. 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/b6bb66b3-5240-466d-b7b2-f36457be3608.json and https://artists.proofprofile.net/proofs/artist/b6bb66b3-5240-466d-b7b2-f36457be3608.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea06e733f58aab7f05a6c7222d15ddd80916e9e4682d0949cc6d040d897098f9. 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/NLT2H2301035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770f0d34c8f181a75a69c6ec0bca3eb6080d76139404f9762bbfa794f7b67e06. 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/NLT2H2300784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d9d40b424db9203334a203369126e1266386a32bde535a2a071b48618170d6. 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/NLYK92300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee35fa8054071c97cfb1f803c4838bfdd756d25b6518f0e9230c240a7e54b69. 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/GX8LE2356422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f708b658c5e56b286924a632c114b2e4e7fc8870daf456b1ca8fbd45e476ff7. 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/NLT2H2300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4e3b25589ab5cf69942fe3494ca8c9d10452f7c424d4a809ce1a01acb84a8f. 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/GX8KD2367002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6566afaddbb97503c7c6c74bb524e6278113f99873e2c0a6e588ec740f38eb. 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/NLT2H2200489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa77f2c1975dd4063a2175521b9ca9008cfc5dd93bcbcbb863cf8265cec5d66. 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/BE8LH2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23996f1dcf694b7909657780a326aefbaf95ee413b1c932f5e47c0045ffa9afb. 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/QZV362220248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a0b0c7b6cd59fbfe0cb2b76e91e370d5e054bb9dd4bc801cb69a0b489fb25a. 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/QZDA82100171.
Breaking Free (Icehouseindustries Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13667f3dfb5b8883729fbe0d682edd813fc01117966e09ca7ff51f3e39264e91. 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/GX4R52427932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f8741eb669d1595d7f7aa03445ae314b08f3ff353704cbb3d2dd0098e52406. 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/FRD602113120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d9f8d69d55fbf92ddb9a9b36c89a49a90ce491b34f85dab0eb209269ff709f. 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/FRD602113128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb95f74b77dfa12fffc06da09669576c24435621c204f25f0eda6d680c60bde. 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/FRD602217946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064c4e6d2ccb02b1c4393697640df13ac46a3d2c166bc03c63f0d5000a5f13ad. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRD602320614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce47932a75f4b9f062fd090a6a60c33cbc0ef228c80d248006f617d4fb25d423. 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/FRD602320615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7419e34929c5745e78f66d9c52656de7a0b3163fc20faeeadda528e15492fa. 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/QZNWX2346520.