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 0xc804a753734e73591e3edef76aecccfbe3b9ac47e7bdd54dabecb116e48c4c2a. 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/9b73f2b6-54f0-4d61-9a6a-1e371983a647.json and https://artists.proofprofile.net/proofs/artist/9b73f2b6-54f0-4d61-9a6a-1e371983a647.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
50 suosikkia - Lapsuuteni rakkaimmat lastenlaulut
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 0x1e9e7f69a074c80309332207608fa50d889a8e90c9a9d3aa345601db709e4ba5. 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/FISMC8500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71409a0d7dbaba06ded8f3e9f5c2b98f451910f257ff270f858ad18e391cc60. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/FIBAR0800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ef28e8e5cc739d572a18433426ab9eddc648b2dc2a6ff2c9ef29ebcdd62e9. 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/FIBAR0700570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc774194ee4cdf0a26b516508d0cd05692615302ceb7b6f74ed246117d8064e3b. 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/FIBAR0800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90045820aaa61183eeb67acc1c84047dbedb864784707c00d06bc09e4a02468b. 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/FIPFP0300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6377aaedb9788b3c8d4c1c2ad38bf1740c267820fe959f2b1943fdb35f1c548f. 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/FIPST9800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c27dd1499362b3d7a76c36405df2051b0790f3138fd9b08731c27f4548d99c. 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/FIPST9800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc586592fde4144dabd128eff84b2375612accebd579af4fbd7b8f4cb95f798ea. 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/FIPST9800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f0b96799ef7807ce2c88c08d28e84f6af25defeea8b2822f7e56b852f8bce1. 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/FIPST9800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f88cce50641b0be5b99186b828e050e44a827a82cf07e683fabd40c335cedb. 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/FIPST9800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01969d490dba4927919d3376c6c447b0be5e17398a1df03a62a9499a7c17535. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FIPST9800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbe1dbe1605153c7c0124197a9b9d44e4efec73b1cf703734e1f779f12d99c1. 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/FIPST9800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a1f73d6b99cd4118b913926345cc462ad490ebda660e27e451d3db8dcc9874. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:56:09Z), 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/FIMTA9500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010fc1ff0cc78bf15a48ecf3a4e910252c4eae84f21d18970841b689629f280b. 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/FIMTA9500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93ca019aa13b7f4701f045d95d9dc86bfc389119f38a5b4704831292085b453. 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/FIMTA9700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105d26ff16cf462dd013676a45ebc9c2c8625106b6aa9aa335bb66b98bf3979c. 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/FIYAM9700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272f96ee8e0ba83b844e2995627fa370109d77851499ea479ef693d72d70e639. 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/FIMTA9700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb274514e60265d100439f594838b2611a0ba0fd17f349c29da7f8c07819590f1. 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/FIMTA9800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faadb0526464d68e4fcfcfec6ff3aa285550f6b1f7d529489b8dcff2031d271. 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/FIMTA9700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0ece5340d8e484bb29112a814294d74eecbde08bad8d86b229243868853ed5. 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/FIMTA0800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca0bf9761aacc5fbd1cec890ba8dc45cc9644095f5e13f7ad21a1db5113e377. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:00:39Z), 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/FIMTA0200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca28128986bef5203c6c6e2a433d19dde4fb8f92aadf00bb90604a1c3a28bf8f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FIMTA9800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc7a9420f994a152f5069d1f800a378d30d3e49cb33d4c051fb05e1e6f6ae6d. 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/FIMGM1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9c4f86d02db0c89fed38b30ed6d710b9374bd07c8bec4c6dafcaec5bf7fcfc. 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/FIMGM1500014.
Kultaiset häävalssit - 26 toivotuinta valssia
Silta yli synkän virran - Sävelsillanrakentajat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb700d195e405456115486c9e6fe52b5289936524eb66ae3296d44f3984a09c. 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/FIMGM2000007.