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 0x6df2d8361663555bdc43700645505aaa0b093bd6827806ff4672d782ff66c0e1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41ae1c32-5926-4d4c-a2fb-83e9c63d60ed.json and https://artists.proofprofile.net/proofs/artist/41ae1c32-5926-4d4c-a2fb-83e9c63d60ed.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 0x41dfa01c587bb0a01d298964425d62b29f13d411fc8a089e289dcaff8f58300a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DECE72303657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83108d79cc81d0850c404d05049b910df4dfdbc88a0e8872fa4ec8bcffa74fee. 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/CH7812530957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a22d557132bf6fb13d387bfd29f833a1d98e30956ef138435dea6d6c6da6059. 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/CH7812352198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd3f9a4e04ee7fc80d400b766c0c08439ed6a3d6603fd0d9eb230c6bc27451c. 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/DEY472379719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f0e39af5aa84008bc54441f4a470a18ead3202a52d987ac771767f39f62cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812356446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37137ec8b4a648484eefce4a53fea6f0c2d9d891edc60495eb05d59a9ceed112. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812358976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bddecb56cac8768386a9239d6361aac146be17228c945dbe35c1c26ac194926. 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/CH7812357514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f25f034a88cee2b7dd5224ee7b713b1cd1b00d64af9b4117cdd2c4086b1c4d. 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/CH7812421326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1cef5cdf15065fcafbc3a7df2fb80f050bf6b80e0600c2cb3e7144f25b25ae. 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/CH7812425199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd9db1695db837e1387e91fa89525ed1173fc388d89d0c224ed23c1d3ccd823. 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/CH7812528297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892241626c85525eb47ce6aa201c665f2f639bad81fe90e70f9d8f4d5c19305f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH7812423341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865d4a7cd303f40971c06956883a6a81f4ba5251cc9bc0cff213cb12fb01451e. 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/CH7812421313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edb972fa8a63d47a13eefcd4b9ef70240d24b2bc199ae2600956b9e4d58e99d. 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/CH7812425406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865d4a7cd303f40971c06956883a6a81f4ba5251cc9bc0cff213cb12fb01451e. 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/CH7812421313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd9db1695db837e1387e91fa89525ed1173fc388d89d0c224ed23c1d3ccd823. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH7812528297.
Team Cali VS. Team Hassuna (Part 1 von 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4ff585ff66936dfb15adb7a9504d9bb015405e22b34212600439fe61c017aa. 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/CH7812423489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a3d74c0e8580871f39ec886ad891b951dc5a89c23ebb1f146bf78a348469c2. 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/CH7812531499.