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 0x93b8c77104a0b8ea2a6c127a0104041bfdc5c1eda79024a6d86b8c39850f3c8c. 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/f6cdda6f-162b-438a-a742-02a024a31e3f.json and https://artists.proofprofile.net/proofs/artist/f6cdda6f-162b-438a-a742-02a024a31e3f.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 0x1df7d5ee8c6489a98345779d85d738c23900eaafea569d9db89315ae4daf3f46. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GBKQU1305421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98c5eea4f7270a12e228903ccf599db53bf6a58a34b8d2ef37c4872a4973957. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBKQU1305406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85085aacb0cf0a5cd295078005a348d947fb3b48ec1e18c4576e3d28406ed398. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:02:11Z), 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/GBKQU1311831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420e592178438758e05f3fb852217488dd5de2955ad7647215efe01d19e9d4cb. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:41Z), 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/GBKQU1324046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b56285663b37b205ed357cf96b192839a07f245ced467eb82abc89b5de6710. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKQU1485478.
Nu Venture Records Presents: Rafau Etamski
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701a0f73804e3f0642aca0c289b2601effa4bf0607ad1a954da9e328e88e4c72. 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/NLCK41044778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c632a25a410061627384b242334ddbc437caab94f662fc735f38351f93754d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBLV62106467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e36fbe477a2daf107db324c2af62b033552392538e7669e0700d63ff655bed. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GB8KE2161852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6685e1b92b1027f490c566a5f03a0f06c705152b6111309b8df5cb73db74231a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GB8KE2161853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973f4cb0f31910724e93509c348f5a2fe6b2fd11fe1b276b622b0d247e92d996. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/NLCK42215179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b10fd66c07c9e5b52b2c0630728b466ea0060ac12c56d888d13eba78b2fa9a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLCK42228402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fe8aaa95a2ef38e6a04c6549d3255ba6363ef2bf868b9c95594c9167e284f4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEQ022371815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf273596239b5d1dee10380cd0c22ed2ede1b3da3ca726965cae6e431d224dd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA0R2345346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f4f1fab48741c1cdec0801fb5301145d9972966c5d8aab1a251933099d9e1e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR96X2495001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848b17a4ec070ebf2da0bf7a9e3f4275c7e6e9e840be92b079a01e0878f5b56d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZTAW2415785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fccd87138f2c153b2489673162423774e239937f10be2f17a4e7e7e9f71167c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX872598752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2298bfe2dfcf87c6e77654d3a2ae6986100eedb7df89610b23105ba7ec59662c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU1652751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c77ff645210958a827a4aea061f7f9b313ec2d33852ad55911980326aecfe33. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBKQU1605733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96aa622f73752fbdecce0dd87ff4aa6d38d6b96704d38b731a913b6c3fc15ee. 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/GBKQU1558771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529721d2c1aedfefcf715aac7c8c3a695a043c16de899a32ab99acc975d5e303. 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/GBKQU1605732.
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 0x18764bf89dcb401dcd467dc3d277542c8a83ca91b8ccdd293fa78991ca647a68. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBKQU1558772.