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 0xfa931c61f2a4e635d0a9bccf1c5178624262931b5f0b6f51e174f7d297aca71d. Chain 2 (Bitcoin): anchored in block 953984 (2026-06-16T18:08:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d4687d3-4d87-47b2-8ede-cd309e062c4f.json and https://artists.proofprofile.net/proofs/artist/2d4687d3-4d87-47b2-8ede-cd309e062c4f.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 0x84973021af85f53499f0352af2a400b19915a8092ea836e67c364b0b41b9e17c. 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/FIEFE1200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60a48c8cabe2d9bc67473fafc59f4ad32f43bef6e4f4fc186b7ed37eac27385. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIFDP6800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c72d4f2ef7286b949d69074fac300e7954b9a6e3257adb380ec7806f6e7f63d. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/FIFMF6300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9c3db9cd148e5fc49c42f6ec2aec7ccda1b3a0fb7a1584b0f6148ef9bd653b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIFMF6300080.
Iskelmä Suomi - Kymmenen tarinaa kaihosta, kilometreistä ja iskelmästä
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37240f2d94c45435aacaa3f02de056c7fcbfce7d6f550ffe7b97829f29aea401. 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/USNPD1226967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466b1127969d2e95ef36c51448543cbe3e27310a93f8942940f8581d76d8f82e. 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/FIARA9500158.
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 0x441c3dfc5ce118f984c739273b1b9c08af34b9bfa4190c9328ddcb022acda903. 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/FILKA8200102.
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 0xd1c4c49b5deb2042a82997205d2d877843fe95a59956c743b3a092a099ea6099. 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/FIEFE1100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caffa76b98346d52946a483d792ab68f060134fc0adff7c86302afd4677da9c. 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/FISBA7400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240439e1a974f88da669966297d3d9ac260233babf411a622b2b7bc0abe18062. 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/FISBA7100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6846b26ef5d4030199c66e2f63142eea38039ecdcfe0defdf40e57c7b3f88330. 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/FISMC7900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6846b26ef5d4030199c66e2f63142eea38039ecdcfe0defdf40e57c7b3f88330. 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/FISMC7900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195d18ba3a46e33fb594ff1335bf640333b518d678ac1c55c1f7f9e8e7dd9ec4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIEFC7300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f39fa8f808f3b61015b8fbcf0394c7750cb0eb1479a81299d868c33e471802. 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/FIBAR9900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4567663896abe9ee934a9b829da2694e4341cd1e2cb952bbf61d84a92609fcfc. 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/FIPFP9900128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2d6261780eb5982aac3c4f08d10263830ce85de2645b5795b2fd2de5cecabc. 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/FIPFP0300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935a247662b213965898d4bfd8f892c4bfd21c0a802b59e7835f574d734043bf. 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/FIFSC7300400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003095d110f119b20f63e257a7af09286b3c045c58c8c9bca467d185479db9c8. 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/FIFDP6300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538c30321cdecabb398bb1a9be16c3f8ef8afcdf69993d954daf01afa838018e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FIFMF6300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733da97ce9afa10ad08066aaa9fa268a6db208b896113738580c0c059f63a4c5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIFSC6302400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb70224b7953d33dcd5e88cba3de3216e7458bbd1f8d45a1db801baf06b12b8e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FIFSC6101200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccedf885537f7b3de4d07a5064ec7632035e34481ae0bc319a440c5e70b9fa62. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FIWMA0700933.
Rakkauden jälkeen - Kaikki levytykset ja arkistojen aarteita Vol. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921013104fbf3adbd9d5ed754b56ff82ffb258fc81bd386603d1ecc58e4f83c8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FIWMA1100152.
Rakkauden jälkeen - Kaikki levytykset ja arkistojen aarteita 1963 - 1988
Odotan yksin - La terza luna - 1963 versio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb61584ae89876c75c765f4814a82af5a9014a5348dfe0332e3aa7bb654277fa. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FIWMA1100032.
Kuinkas käy nyt - Stessa spiaggia, stesso mare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da40368a73bbce5c19315b5d1a1d5eb41f72b5f65f107355626d19b4fbd493a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FIFDP6300011.
Hunajainen - A Taste of Honey - 1965 versio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e84f41febbebf7139a0212e58b2a92cf6c1fdd2633839a45d302da3d455faa. 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/FIFDP6500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ba422927b2b05732ee2deafc38dbabfb9279e3d25ff33e7a6dfd5b49bb2781. 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/FIFDP6602000.
Rakkauden jälkeen - Was Ich Dir Sagen Will
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25eb8f5b9d58907e6f0b54662dfd17501e9011d73536697339305790804b5e59. 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/FIFSC6801000.
Nainen mä oon enkä pyhimys - Sono una donna, non sono una Santa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d76a082620e2bbb9a9875128eef61d9215d6ed61cd436e10fe4a348427b90f7. 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/FIWMA0300228.
Suomalaisen jazzin kultaiset vuodet 1939-1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f39ed8ba570125ac510a6ef3d9fa2efe4ababb416229a852d962af8d15a05b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FIFMF3900003.
20 Suosikkia / Rautalankaklassikot 3 / Nyt soi kitarain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9594d76e961762fea1b0884694c4fd92f727a3e59169871a20e0b97f8bc7770. 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/FIFMF6300077.
Laulelmia ja romansseja (Äänityksiä 1954 - 1971)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7366dd32a2b660886b1559779c6dbb7f3d5400cdd109b4a9e8ecf932edfe5c31. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FIT3H0400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cc47582e34e61a4d33b974bd288fa0e3faf4e11b9de2493059387b490d3bbf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIFDP6200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001587d6631aafaecc836bea4ed1220558b362bd75e0c9a0fdac0dd07ec19d97. 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/FIFMF1229624.