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 0x5d44750ed3c97c9e7c5c8916cc74e161709bf6d6e596c2091da4a6d7193e6867. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96cf7195-c41d-4a1f-872c-4d4fa5a4675f.json and https://artists.proofprofile.net/proofs/artist/96cf7195-c41d-4a1f-872c-4d4fa5a4675f.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 0xc7b015194fa6d5f9fed9d02c9c328e5e8c311942bd120e16623fb03030170ecd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FIHL21000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305e64fa40512e59631c3c809ba6112bb9480b896a00ff82b93d0698700e4132. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:44:16Z), 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/FIHL21000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906da41d175236f913385f2c7412a2e06e03ea3fe5b0fbedbcd5c48637c5e98d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FI9PF1600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ac89115c773fcaecbf3312e93ec1438df24b8f75fa55896e8bdb3f5f7e6be7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FI9PF1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10358bc9fd1f880c94515c9a2f8193a0e66623ce48ef41c3b0bff0847761d666. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FI9PF2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea45c479346390c3af5a77452f511880234a91180d2f81f09cb4ff6f84886325. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:18:27Z), 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/FI9PF2300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b4d7e5f84127723462dd0c3ba65f8707996e93afab92c2fc77a62f12856a91. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FI9PF2300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c8318bbe19051beb7d55ef6d1e993d4b1d2abdfd13e4d01d24081aa85761f6. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:56:27Z), 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/FI9PF2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13bbe8751c98561b6715e65ef769723332a9a30d89cdc671401dda96aad406f. 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/FI9PF2300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c3b0f05e2701dd4781ecc4249a4cf8d660d291b2939ae99271f047b413d20b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FI9PF2200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd0f46f22918eae3e9a1a2cebc0d25da558aee37d991be7a2d6cd12d8ea264d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:42:59Z), 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/FI9PF2300053.
Bonaparty (feat. Jaakko Laitinen & Väärä Raha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f12e2439c94af7cde579abe4e721e25f0fcda1bf7ffafe1e6e2bd127e974ad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA811401200.