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 0x976a5ad709beb50703435dfa15926d40df2036c861b1bc6aa9421d7666eb97cb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e14452f-8a3d-4ac8-998b-5a32c524ae7d.json and https://artists.proofprofile.net/proofs/artist/4e14452f-8a3d-4ac8-998b-5a32c524ae7d.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 0x9314e6c26c2c99a8309fda9847ff6c7cbf7b8834ae6878a417ffe660a707955b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCADZ1844801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931112c655b150b1dabbdfd9641dd8efeea348dbd543a6e8d57b218f14bc8e92. 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/QMBZ92091853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cec9f66cbc3afb33497ad5b440d9c5dd3e77bf94301fe4f60f8eeb11fc47d01. 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/QMBZ92092333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663ea0bcefb14ac0274a6daaff832914c82af23e31db3b8c8ddf061650ef9859. 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/QMBZ92091945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e22ad9a19f5abbfbef76b01755bfd272e7b1655bfeb5711dfb116f7ef9905f1. 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/QMBZ92091946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43129191b939700c871beca6e588cc5a00c5c1ddc21a22cc6852f8e172663bbf. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:00:12Z), 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/QMDA62133244.
Беспризорник (Cover) [Из сериала "Сёстры"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfb88636e7c59956f0d30a9acc64fc69a1b02b9b1dfbf88a7e6657d3303665c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUB422104293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ba30b2941ba8819d5b84f25e8edfc06761adf8fc6e16ec12c64fe299e5ee17. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:14Z), 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/RUA1D2324956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83112ecb9c2842cb04d139ddc3fe136f846be5d286e4e81072eeaa806763df82. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/RUA1D2595064.
Грустно на этой вечеринке (LAVBLAST Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d6b41195f669434ed90419f5a00d074bd2f2d3dc7486910276e5b012611338. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:39:59Z), 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/RUA1D2595066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe60eaf0f424d727a71bd481d9d25bae64e4085fb57a35ebd0d83b87401a6492. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUA1D2595068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21798115349a05506b77958e8c0441ea5613cba85906d4330f6bf18db2194c75. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUA1D2595072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b691cbc2b7b660e222b61804bd4b52c39782892e05e0b9484c5d9a214c6945. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:42:19Z), 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/RUAGT2588869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e43ec5c0fd47b88b25f23b8cf629b5c8b8cbecd1124e0e611c5625bfb0dc9e. 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/FR96X2416063.