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 0x8f5a972f1fb237b9a66027d0bb5d748b46a76b8a59311fa3f0d4b9cd5e767510. 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/1980dbec-1dd5-4125-bfdf-7288cb54fe95.json and https://artists.proofprofile.net/proofs/artist/1980dbec-1dd5-4125-bfdf-7288cb54fe95.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 0x63374a99ceded10fc3fe050d66fecb2a26dbe2b6b38b1a047d82fa33716e1ab2. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/EEBF52300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0c3d7622e4fbd7c372bc238e68cc0e4c61421da3627b5e5a2569b067baffbb. 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/EEBF52300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0079304a20670444c3eeecdb2340df8d9386bf6b21d4c9466a39f1d52849fd9d. 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/EEBF52300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14eff88b8dec81bc6e363bd31c186fc626228be7d84b75785beb712b6ac10d1. 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/QZDA82334904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318120c56567bfafe931d66bc42a67d6fbb7e70ee0e6ecfa7dc5fda0fd571226. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/EEBF52300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6480d43f6413d424c6ff71950872dfbc1d198f7dfda90205f130266a0b6d397. 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/EEBF52300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8604126e1e0544b2347a3fbb9437abc7dc086da94cb2be64087524be5176e93. 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/EEBF52300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc83fea603f2f40bca1c2a48243f6f3a96fea0d2d1e51bd13ce1001a689fa78. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/EEBF52300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c308b0c8f63f98021ee833aba009767631abd66364c7063b1bb7ca9f80bdb6. 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/QZFZ22373770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640e520d6e975390c89888fd283a4f5d63d00be3ba9ee7eeff6851fd7b20e981. 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/EEBF52300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bc9bc02e3756657a7ff8ca38fdab56682ccc8b9c7e45787f50c1f1e93a4521. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/EEBF52300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a6479b1910e0ec2d07fa247acfabed605c2b7d345a05c46ac6f2b9fbceef88. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/EEBF52300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8225f4e6f641965972016a493f4379e931a57a83c29424ad8ded0522a347ffb. 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/QZTBA2499388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e0b79bd09bde4a21d4f6f2ea5523426664e55d5a73eb0684d248ac2ee6fc82. 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/FIUM72400198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c36fe89a64a571254cdc48ca55cbacf73c6c3de5d6a3f2d7d99ce88cc1520aa. 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/GB2LD2410136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0b40971a9007d26ec0b1e8c6a00555e0da81f17baba81807df77762cb6bd3c. 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/EEBF52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe5d5697e26dc6de6b9bca6dea48f65799fee9b1691bd097a4e6424b1ae1b3c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZTAU2312999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a120f9d531ca66eedf5cf5af64026c867418ff6f5547d2e36e4de94e35023. 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/EEOY32300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e01598f27e9776ad4e266c72d2f5d3fe07cdc702c200918aae1cc635cbb34d7. 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/QZDA72350154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfa40b9af4cd5c47bbba1e523a8c988faaccb4fe799b80622d6ab25bcf13f92. 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/QZNWX2287721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00865a8ff9a7790c8306267f0603f54e456a11a8af439916abd6144d67dcc5ec. 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/QZNWW2151783.
SIRE JA MURE (feat. Luurel Varas, Maris Pihlap & Mattias Tirmaste)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195ccd27eeee9407e645ad21afe181bb8287f4ccb0a7c1647d5b248005bcd239. 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/EEOY32300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bbf21b1f2d1b3b1462bc1563de5ab145d5b79621f6886e70d1e8e56968d275. 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/EEOY32200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf59417bcbee24726fc143f29b8fc5170e9a6176bd27d21f6d0648f905f6004. 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/EEOY32300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9bbe4dd3809001ca791f35212fa5087bfe999bc24763ea9d3f8e87e7a55396. 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/EEOY32300006.
MEIE SÜÜ (feat. villemdrillem, Maris Pihlap & Mattias Tirmaste)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1832b10ed94f15b8dfb01f36de87546f483497d5996d4caf25738ae42db61b54. 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/EEOY32200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ca6f6eb0b0af33e3a99093a823ad0dc56eb26823acbbffd2a0149980958386. 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/EEOY32300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a120f9d531ca66eedf5cf5af64026c867418ff6f5547d2e36e4de94e35023. 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/EEOY32300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d0918aa77cd6ef81372e73fab77b4e937227b99309fc1cdbb996a52323b068. 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/EEOY32300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e9d702c27a0096ec31ea8c8672f579b476b6c61dac368dc12db4aed9d66bef. 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/EEOY32300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfd9b591daa63a6ffa55829d5d741ccf8089d8c7fde648b5b7f5715ad6cd5df. 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/EEOY32300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfabe2987bf81042817caa7979efc48c1d01625b53601133b980b59b432a4fe. 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/EEOY32300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70a62276a6a67954461a7304ee1937c25e048d485eebd45414e5c1e8797b091. 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/QZTAT2357011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f27fb0823b6c18eabd490b5ab525e2b0a7aa127a7ec95fee688cb700afcd515. 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/QZTAT2357012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bbf21b1f2d1b3b1462bc1563de5ab145d5b79621f6886e70d1e8e56968d275. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/EEOY32200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63456a89e5b2646a4c092b4cbfdf7ab479a49c92e3e56c239ebe013eea39ef5a. 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/EEBF52300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3896bca75dc0b17f88389c0c3664a97b3dd125bbb87a261cea44afb38288d061. 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/EESR32200002.