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 0x70d6f115ac933ccaa4cf347284cfcb2e188bb4a31bc034cc2ae9089e1010bad7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a647b81-f07e-4063-86d0-e7b5a97d196a.json and https://artists.proofprofile.net/proofs/artist/7a647b81-f07e-4063-86d0-e7b5a97d196a.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 0xd04fb49bb6cb6a9cc1ff3a0098be964af4544cde2130e6930641fd0472815f6a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5AE1600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ba2223dabb1ab0ceb5a9926ed9613b0924eac663e56b562b39925873fa66c3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE5AE1700108.
Halleluja (Sången om din kärlek till oss Gud)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4b4a823e7c3982f9b3daba7dba8d7382411ffaaad6f1e34beef2e8f4cf1a5a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE5AE1900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0128a71eb9652552ba295683b383c928ac1da3debbf63c7217b89c3630fcb047. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5AE2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1da00cbf5159a725ae829a301e7e26d9eea9f9faf1acdfe784c8c1018fb840. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/SE5AE2100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fb692bf6cb1a00473fe29214f9a9acd68a0602167c73affd7a4e363fedba2a. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/SE5AE2100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa3152f282db17a511517cc70fbe84f0373fbb06b30f8a2e37229300d20c448. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE5AE2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd837fa160d17449eb115fd8d13efbc31ad647273ed87dcbf813af582c04cdc2. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/SE5AE2300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa20b8eb818fd68a454f09c1f9b5e20a176131af671a1e2d0f128eb3bc6ecca. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/SE5AE2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6cb0fda14b38c904ad6a91c567de6f44e980cdf994f2cca52113e6746935c2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SE5AE2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe481963ea010691db623a61fe1a14b56ab6cfdee0f2504d2a56231b2a97f25c6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5AE2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7fcaaa84404bfb7deeaad8fcda02cbaf50b1d65ecf1abaa98ca47e3851de0e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEVLW2311007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29357f2b017e048514bd9826cf21cf3be246e84508685aaca398460f8abb8c9c. 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/SEVLW2311003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b57af0f9c8e558202974ce5bbdacc5da78164175b311e03e0eea264fe849b36. 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/SEVLW2312003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb03cef4203a86e2a4b50d1070501a6e0ef63844b9268b4b5a4ef486479eced. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/SEVLW2311016.
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 0x97c07e17c343982153cb405626eef12050f022050bb676c797b32fd0cc5fea09. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SEVLW2312014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1662413b469c6e3c8dac9157e1cfd0da6b75e96c13e52820f332798f5fd2fde5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/SEVLW2108006.