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 0xdb2b0cfecfde21448b00ed68bc63a0070da9c699c74e270ac322a1baae9e45dc. 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/abcbd19c-80c1-43cc-b699-2c84d66678a2.json and https://artists.proofprofile.net/proofs/artist/abcbd19c-80c1-43cc-b699-2c84d66678a2.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 0x007d50f703bc4609019f4228f37c06ed104075efa131e6dc5e4cf3c2b7501c0b. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/FIEFP9500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730016d800b8a92d97080cbc3d8e18341af3a5dd04577b7ff3a6aec2ae87c929. 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/FIEFP9600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bd410aa1f2dcae391619682eb1079e371ee75a34ad04d33c9cb2c9e0b73048. 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/FIEFP9500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc499adcfb0f4f738d2677c60ed02bc95d0f0e8683b1981af7f8db5de081dfa30. 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/FIEFP9700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6a1ca0b2a879c2cdc64b379b20cbea4269dc092fa8a40186538250db6ec687. 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/FIEFP9700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765440c19ab793ab1ab9816ad4d7699af143e165bf37b9e1603359b670a77eae. 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/FIEFP9700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ceee3fb5e7b4ea75b520364deb038c5886dd24261ece56a70045f79802f0b1. 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/FIEFP9700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c904b154d278ccdddf1a2644dff9438d2620d7d233a420d4607beb3767dcfb. 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/FIEFP9700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06c162109d0c60da0634d9927f6dc27ad8c75c31c18367ac0457909ece578a9. 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/FIEFP9800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d03d843a72a8629b51bd729297de338fbdaed2022282d9238ad2cacdbfe439b. 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/FIEFP9800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c43d7b91ac74e65b4552cbefc7bc74367c0bd63213408bafd2e6d70c5fa7a3c. 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/FIEFP9800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189f8ddda5d7033610cb7403b2c8bb14398cf2f605135ff440a55af293efe448. 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/FIEFP9800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa064964f97c7c6eb594d52ab6d627663e4c0c9c49989e216d30d6a84b7fa107. 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/FIEFP9800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5079d32f6c037c8a3fc49a2a9da75e260baaf59ffb7d785117ce493276bbf9. 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/FIEFP9800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a823ce4c9b731dee1ebf72b49a9b896408499450ea222447192703d57a41aa. 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/FIEFP9800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d2a7de33566df0240830bbd1dc9853e46c4b7692876a9ca825cadeda91387e. 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/FIEFP9800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa315d68c15c8f2828bc22ed7e50543287e78e118614be79612ca50a2864f94ff. 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/FIEFP9800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8493e0a920695bdd43cc7c5d5533b16db9a0a2e3db99a0698c925e897a2fa35. 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/FIEFP9800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc846a6c708075a18f1c80c18aa3ec789cf3dfa0f69ef327ecf0cba977ccbee. 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/FIEFP9800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bc82336bd97ff86928faffbfd62686ee74df3090b2db62a38df425f416035a. 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/FIEFP9800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223983df85c3576782dcf750177b2e38597a6d02d26459b48c6daf8232c27afb. 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/FIEFP9800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b87f1ae1e97ceb19239509a172edb39e18ee6ffb5ba1a65b4f646945eb45fd1. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/FIEFP0100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5135bb4073e2fc5f23971decaa8daec7104f1d0529c572668866cbae29fa2e7. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:42:48Z), 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/FIEFP0400013.
Iskelmä Suomi - Kymmenen tarinaa kaihosta, kilometreistä ja iskelmästä
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313a850bc8f2b89d870874238148e9c3f48d279b98500dcd95b4127b306993fc. 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/FIEFE0700688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd12da3cf193f911ed33c55842e6110fa3cd857aab18fd9f2e8e9042b5bcae3. 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/FIEFE0700689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d92a524d7e4c420344d797c0bf07e533350d3cf7d3497de425de8b5b1ce8ad4. 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/FIEFP9900059.
Kultaa ja timantteja - Topi Sorsakosken parhaat (Reissue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd285e92e1e1699c6a586f1b359ad30f20b11eac19c89acb69c61b90e48975dca. 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/FIEFE1200554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4a3ea56df9f69da5e3ad5dcb06829f79db9fc91876ef88d96a1958a71acd78. 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/USNPD1220625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e98e18fa5b5a91423c9958e54867bac9d4750c21fa89c9b28b13a4e8468617f. 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/FIEFE1200555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7defd16e4d2d1d9dec4a693af9899287e303b3abb5decebab4d65ffa9fe73fa. 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/FIEFE1200556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08bfa9fbc1b3f3e4d6bac85b0ad3dfcafbae4074575c2209ceb6beaa71760df. 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/FIEFE1200557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae97117f36a066a1eb11893a6901c4a18e1fabd010d26a1a0328a93078fc915. 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/FIEFE1200558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42f449931792cf7cf26e275a70064cdaeec8db0a294cd8f73892a3b77364777. 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/FIEFE1200559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d996825feb6bb5717b2431effe3db7c0ccade8fe1c5e265b32e837e812edf8. 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/FIEFE1200560.