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 0xba672ec4c7d3de52ae5aedd496f53af0a1f076addf155f92cd77536c3f24ee5c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46b172e8-7d0b-421c-9d3e-d1f909eaf5c0.json and https://artists.proofprofile.net/proofs/artist/46b172e8-7d0b-421c-9d3e-d1f909eaf5c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Barnet i Betlehem (the Child of Betlehem)
Hosianna - Adolf Fredriks Bachkör - Christmas music
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 0xb7025209a237c8d0f86e9579efad7cb3388e8df96e9d2b7781aa0e71b59daa81. 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/SEBAC9908030.
Stockholm Salvation Army Seventh District Brass Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8091ec4a512ce4fb858f5e5f5446dd4565d49f73a6eb24d8230c0f51f8dbccf. 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/SEBAC9908040.
Judas Maccabaeus, HWV 63, Dotter Sion, fröjda dig (Daughter of Sion, Rejoice) [Sung in Swedish]: Dotter Sion [Daughter of Sion]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1e08b2aedf07de9a8acf05a90155d36a14dafe4d5b7a3b6d52b32cdea8660e. 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/SEBAC9908060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867e318e1cea06b5385d27341f7a37b794e73928aea52e8f4629b60df3140b02. 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/SEBAC9908080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c3394ff566bb4499c071ddd9c62fad2625ec04bcc5fb974a58f939557860f8. 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/SEBAC9908100.
Vad ar det som star pa? (What Is Going on?): Vad är det som står på?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6444087e2cdb397e98558f4f4233a8b9521c21b8546a370b978d7c4f58130668. 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/SEBAC9908110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf398b722088285ebf206d08457ee1475809c6036e65afe163dd2af55e89c745. 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/SEBAC9908130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4c046dcccca1db8b355470db6382fe50e26fa3e1f407713bd5469129eee3c3. 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/SEBAC9908150.