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 0x1709a2e08d8508eb96c0fd68e21e80fe140e75c3323662bbf3175fda047ebe23. 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/d0c70f00-cbc8-4efe-859c-1a6a8dedb22d.json and https://artists.proofprofile.net/proofs/artist/d0c70f00-cbc8-4efe-859c-1a6a8dedb22d.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 0x83f5f79fb000e20803c83dd16e0d6bfef9b10b346c4871e3dccaa4c470ecfa18. 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/ZAC012400847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65c76ce0b2e4dd5dc3d3b6882eae795dd70e9d7f997815891319a68efecedf4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAZX32200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ef987d872b69a04f7e69f762c28f40a8ad3ca5188a61113fcbadf5ea529ad2. 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/ZAZX32200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731044bd04e39417a28fbf0acdd1f650a5298a443acf5cf894d9d7c4e357aaed. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZFZ62155781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757ec1be848044489bba07bf2c03b2ebeb7900a283dcb3b43438138be3344187. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN42055114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf7077b69b43307c7349377b94d8d878f75a880f0721405b8d27b70edc1cac4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZDA42039192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580c7777eeae64fb35de3ab325aa83c45196117e39bb523d26092b306c7cab4c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ZAZX32100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a6eb91eddc06309b7e1614bc29a78cbd11b27d4402e3343ac568b18a2b53d7. 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/ZAC012401109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4228e903e542f6690357488e80b5cb8ce23088005882fc8e2e1c965a10b9c2a7. 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/ZAC012401110.
I Found a Lover - Mack Eaze & AB Crazy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacee10260d4a477994b667bb662a1ac5a5fb8f2283172cd7274c110a9502d5ee. 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/UKXN22593289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076bc0d804753cac671b2154a5e0acb2d0a47edb859ec841aeea67a172cf1b85. 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/GX3Q92549427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e2db6ab2fbdcbe83451e9444b33db39c015e4e550338cab95486cccc2146b0. 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/UKXN22573632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb5fa4e3bd425ed183fccfdab91d0c6c759ad7f375735a230a0129a596ded18. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3Q92549428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd528ed700f78ed0ab533e9fff0cdd5fda51a55e29fa11ca6dd9c152c9c6575. 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/GX3Q92549429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edb88623535f6a5adfda248655bff0f8ff206ed784eccfff84adc7e6b283ad3. 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/GX3Q92549430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbf3d764bb52cd51fd673125386a4bd393c33c4309de882c6bd777c8f5d77b3. 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/GX3Q92549431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54095686068e50381c37b83b6b862859ecaea63585397eaa969e3762c3e57d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3Q92549432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23487fec7239d18ad1df1b2504c3b351e362fbc2de922d49b5f3f47a65aa032b. 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/GX3Q92549433.