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 0x2dc6009c273d64be18e7bf3952f95fefbfb01d13456cfe01aa303d5737508d0f. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b108807-c9d0-4803-8164-c9d1be2f0ff1.json and https://artists.proofprofile.net/proofs/artist/1b108807-c9d0-4803-8164-c9d1be2f0ff1.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 0x388ada91db23530476f1ddc8738b45ff78be6a6d3072420340c6a912a29af8e1. 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/FISRK0500055.
Kirkasta, oi Kristus, meille (Virsi 301)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52422664a43d6fce487da77d981d8ac54a40fd3dc2852348556f3c2e5ed69c81. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FISRK0500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b981aa2416a72f6ca8e4da835790055c1150707ffdd678273ab8bee1db7c43. 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/FISRK0500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ce3473ce736db5e340fd04836a4048a8679f283ddcb072bc00c583428657df. 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/FISRK0500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb854b9122e0035ad0da733450b22c7b202901a9b6174e769dd1ad50188ea9c. 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/FISRK0500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a04e311c22e56aae88c538d1b53e7f3337b7330daf66309519a079ab3822789. 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/FISRK0500060.
Ovat syntini anteeksi suuret (Siionin laulu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000187a65d0535e6ccdd248dbf0b60b1f4c04d413850e438733e6db46b306a2f. 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/FISRK0500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88471640405422bd52ac09dd48ce307113fc24cb7cfb591dce6467af67c1757. 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/FISRK0500062.
Jumalan rauhaa rinnassansa (Siionin laulu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772463332246711c7e090fb83e7031f20d1a5649208f5608d0df78e893ecad87. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FISRK0500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34c4e61cbf86e7101d76ff6455fda6498eacdcddf9bd62967fddcf15bb10d1d. 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/FISRK0500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc2cf1d5237a1b957a299305178f1ba9cce218a6dc851e835d4b5392b8c235f. 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/FISRK0500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9ec7ca19594acd7048708ef076b3007aa636473950f2d490be33c043f06527. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FISRK0500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2495ed5c22d26da4f65f6906708ad5a010e6e466ebb2e465154265d6b893033. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FISRK0500068.
Nyt jo taittuu talven valta (Siionin laulu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49961b94e75c8022c60359b84283f17cad51f4b87430cc7d492306d4c906705. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FISRK0500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc58e275b071a5b8eba1309e4cdca924266b7192f09a8bef79d72b53d1032fa. 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/FISRK0500071.
Kirkkaat riemun äänet soivat (Virsi 470)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea289a9f57ccc5908913641a456ba45efbce9dcaac17d253d4b781fc2992f8b6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FISRK0500066.
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 0x2a97e0670269b6a487fc5a9fbcaa9f68c76eb864c84bc0a4b0c96b078d4bc021. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FISRK0500070.
Siionin laulu 26: Kirkastukoon aamunkoitto
Haukiputaan seudun Rauhanyhdistysten lauluryhmä
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5f5736285b90d980eee27cc7a9efe1fffe7b0babcda6587fbdcaf613d26560. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FISRK1600087.