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 0x68f1b5b6126012a0ef0c7816ee804d26cbf8a2dc37652b05764234ca28fee792. 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/fdba5cdb-6943-442f-9c3b-32a324823e43.json and https://artists.proofprofile.net/proofs/artist/fdba5cdb-6943-442f-9c3b-32a324823e43.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 0x5ab182a1e340e22a941152918484dfb32ecd37444c7c9b7bf245bdb969578036. 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/DEY472472484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c15d1c6e5df30634cb799b5c39d514232f7047ba19a761fc152cbcafa51724. 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/GBWUL2068505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c01173a75caeb6a5e602c7e1ce983f8747c949d61147916bbe793d176585b38. 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/BEN582100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb6ca240aa486324a6dced865af9ff4148c43dcf1f3c424d590f031fe527372. 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/TCAEQ2010291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbf2c49f2bfb6a0faff65421da5b29e1fbe7f6f58c432b15418423128827131. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DERH81807701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddcdf55a172156f33d3cc55e6d89b74a889d41ae7de10bb541bb4ed2ee05b74. 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/DEF078302020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccdb6a48062a9bf74a04d2be2a3fd48fd206aaf5f177eeaa001cc5c256aa4b8. 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/BEC019900362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143375effbeeb4d4d6b9faacb10d66a7d56f23e2e2c2321f9fc180f947d383b4. 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/BEN582100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1d1d9ee129c8990266c0dd1a3de6703985aa80aaf78ee05d1467f15226c36f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR9W11708786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2c41f15f83010038b36882b4fce1b4afa3b10d7e358b30793cc7a0c43c1099. 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/ITUXC2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ed7e0fa432febdbd6d411e943f4e857b9cc1fa6e95f5f49e2cd8ce9f8cafc9. 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/DEGL62400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f22a272da0a7aa5cb0d183b5fa942540574b2cf8ea85b3da8a64c3557aa57b2. 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/ITUXC2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afa9dd1953122b3fe152bc0478e6af03bb621679964d09795d0fcfcee7d69ac. 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/DEL021870109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0fb8e945b643e3792df97726c6cdef2ea7d3aeb9d76c76ddb12aedf7d8af1c. 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/ITJ781800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bba761fb3c6fb08b4c28c5396a354504ab7bb0042e598523f5196227867cea3. 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/DECY62100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc4a50fc0fe61d954ac7d14152d94f2d86d89d9e46303df5d421a9f6cafbbab. 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/DECY62100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e168b3bb2071c58c9ae14aaee9490dfc0984babf880cbbf342ba6964b998c77. 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/DECY62100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8efac9660198b5a8bcac04960179605f0ec447b671922f08b0b695ad8aa4018. 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/DECY62100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d005e09792c36af8afcb321cb621ab46b3d38c85da03e182f1558f14610b1dc. 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/ITUXC2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bf030148e4243b2d699ee51b38653c582445052e258b72786cdcaeabe73fa7. 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/ITUXC2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc13446c0a13b08cdcaa50c378d73e108e2826ab0ed157a8efd1c587a0efc75. 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/FR2X42253696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c509039d1fad9d3c27d11a239437f7d36080df7c77b9741c6a038faf6a62352. 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/NLCK42235545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e9f79cd0e3049e957333e02e11d654b2c3c76603bb8adca0caaec02ae59144. 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/GBKQU2066277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b9532374785db2292c602de5d4ec2206bb5d4c7ba961fa01d528cb5ade1c22. 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/DEU671902100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeac1146053ad6379b2dedfe4b0744333a49765e0ae467ca717b4c47cd6b8908. 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/ITJ781600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffe561a73621bc3d8597b1daf6ada6abdc10b3f9049ef8018b190a6d14552b4. 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/ITJ781600040.
Can't Get Enough Electronic Moods (Vol. 2)