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 0x0d2133e248ea01bf267976b0fd48e37f0801dfeadac3b4067431fe403ac286c6. 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/72555197-60de-45c9-aba9-9cb2e57950a5.json and https://artists.proofprofile.net/proofs/artist/72555197-60de-45c9-aba9-9cb2e57950a5.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 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 0xa6e4f435647b6e0bbe95f74272fc2f1c9ee50bc61bbcd1fa94e1bbe3ace06ee2. 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/FIMMP1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733477c0ee9db32636db8420053d78e350bd762766dca8a517c3f6d2b95af107. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FIBAR1700123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1ddeae105aa9f2e0860545442159c3aea1a2366ed68c49eec7aef7c0a00d87. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FIBAR1700322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189d6e43e107c7e44396b93abf45c98b1e7993b842991c6afd0680a4b1cb31e5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FIBAR1800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3d04ae80beaf37b290a391260f6b0d6cc1aae3e54346a9267789cae609cb3e. 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/FIBAR1800194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a81a760d7c849dd42ccb84072eb9365731743e1f558cdb83e2ab698d8dc054. 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/FIBAR1700143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ef8adff9d49ed821c2c53e3426040b57315fd32d8e3949751c9e76049ab473. 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/FIBAR1600381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733477c0ee9db32636db8420053d78e350bd762766dca8a517c3f6d2b95af107. 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/FIBAR1700123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cffc68bdf0a3e1bd8e334f35a820d113643385ce7f87f4457eefa48d41d3b0. 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/FIBAR1800154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0398799214918b6e666970955df6c3080610eab0b88fc706bd6fc0dda3918c. 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/FIBAR1700267.
Pakettimatka (feat. Seksikäs-Suklaa & Slim Mill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fe41260b7da814864e54ae31d94bfc273be706c74ace15d22a138877be50b9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FIBAR1800079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1ddeae105aa9f2e0860545442159c3aea1a2366ed68c49eec7aef7c0a00d87. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FIBAR1700322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189d6e43e107c7e44396b93abf45c98b1e7993b842991c6afd0680a4b1cb31e5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIBAR1800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e4f435647b6e0bbe95f74272fc2f1c9ee50bc61bbcd1fa94e1bbe3ace06ee2. 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/FIMMP1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a4b7fdf5fbfd84f8ae227d424b0760499b2d5a04ff9275bee3d9460934d918. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FIWMA2000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273d93931fe32b48638c44f14209fb130d93afe2bd7a09ace6f04cfc59473c19. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FIWMA2200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0463fc2a66a520667637073b2c6b0c652c95574cd6a140f342d1310070e38e. 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/FIWMA2300230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9350f9c55631859f5c718f06aa437187311f51c7ff3a452f4f086e070e5640. 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/FIWMA2300343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbca40f7b3d957acccd1ca2f987e49c9ef0d15fea705dcecd0ec0d8c0241c8a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FIWMA2300482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7117c7bd919ad6e8b44e059d24554240f83d5f64a9da0613128f5cf84590e4a6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FIWMA2400213.
Tänään juodaan liikaa (feat. SUOMEN PELI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a771bfba7ba83fd1d0596f002471c3b955146b5eaf3aca891e3fa68e0f5e60. 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/FIBAR1600568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fe41260b7da814864e54ae31d94bfc273be706c74ace15d22a138877be50b9. 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/FIBAR1800079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fe41260b7da814864e54ae31d94bfc273be706c74ace15d22a138877be50b9. 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/FIBAR1800079.