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 0x54adb90af168294231808ae27e1e9c43f463c3c790cfc90626bdd442261d6d7c. 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/e41469f3-8322-400a-b8ca-1eda5e0a9d6d.json and https://artists.proofprofile.net/proofs/artist/e41469f3-8322-400a-b8ca-1eda5e0a9d6d.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 0xc1ef163c42d0ed0d1927e46a3a558215a8ca2597a4096e0ac70ec1ca9e5dc997. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:12Z), 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/DECN40700240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed93fac050427e751f2bfb605da4bb46e9951369af9f1612ee28357b0c796d68. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEKF21801369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9697858b79a0af514ae75e267f0c0102d0d13105424b6c4a4b94eb76327819. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:59Z), 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/DEKF21801370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a59a15e7be5f66bbd5c57ca4f4b9a6839caafaf9dfd68cba971852a6ba3402. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:58:53Z), 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/DEKF21801371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408bc8049b82b532726c27ca9f9a6270025ee77959881b200c6a49e82d5fa6b2. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:36:07Z), 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/DEKF21801372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ac274ac79bda9b0426171beacdac428f829587ec737cc0dd2305497d8310bd. 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/DEKF21801373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0c7e72d2aa7c7d92595f52f44cc407db8cb21a652c885541673c61526fdf88. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEKF21801374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc106fce5f79a9799d0152a61a301777526a299e28ef337aa14af4aafd9981216. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:54:32Z), 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/DEKF21801375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02541cc4dce539325e076a1ab4fac0cbd3eade8741f059ac1f05fc7352aee92. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:54:25Z), 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/DEKF21801376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88d6608054389e7026c6a2d3439b4214b777619b48031bdb568c0021cc3ea1d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:04:42Z), 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/DEKF21801377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec70857b063882fa00bf15cf486a4d2a6205014407ea5280afd3c4cacab05aed. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEKF21801378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59073cfeb26b166b32a97a5f2a798539864b1573a2d4ad8069292ada5cc94d2. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEKF21801379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dffb30f31edf75e1ae33114e80aefbc25f50feeaa531f1b661bedf684a7b99. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEKF21801380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa880d087420c95b4ac7661d01b5957b54487c317a581f9bd43ffade9219bf5e3. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/DEKF21801381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8740812bc9a0e22ec831746d9365d03cf184337aa5d1db11401cd72a96616d. 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/DEKF21801382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd5ffe5d60f48b7d826340e6bc61097d15c7c1272b87683f8a5b1e2e2cad70f. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/DEKF21801383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef52b21bf334687f0e1c20e0390f2587a16454daf812af6a26513f8866d15e73. 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/DEKF21801384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07aa7794d46f3e985c6320040a3e0cbfb35324c51ed5c1cc9af746302c2b512a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:23:15Z), 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/DEKF21801385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3079f34fb5d9655da6873f4da394e9811648da3e0f8a3318a8d4ae8d32bc694a. 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/DEKF21801386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefc9712fbd257cc849dd66f6d57d767ece515769e23986e0112a1c90277c2c9. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEKF21801387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05133e7c439df2867ea855a87cd1f7bd87b3114ce12f5d3a8187f2518a836c27. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:27:20Z), 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/DEKF21801406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e2161da6d8704296d6b4f3fc5ba35d931af0ac2dd6fc101e8811e9df536ea7. 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/DEKF21801407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5efd5ce6eb20158f19bf4bc1225bdf055491bc6c183b8e5aa51bf5c76fc9cb. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEKF21801408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dcfd5c56c0abfb5b01c00e9307b008f6ef980acf1512868235fe7560644812. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:36:05Z), 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/DEKF21801409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ebea3ca8268d642841eb755c6f8d05da4a7bce975c0b2477744613957d14eb. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEKF21801410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5043949b6bf6eda8ee941f2f21d69333a41af0e0a06307909028fa91dd39ce2f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DEKF21801411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566b099c9ca61f461efcf3de1e961667307bdf70a397411af99eb83c099e1401. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEKF21801412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7fba83a227fd534529b6a8a03b0c4954f82424183278d3e07f24090391fcab. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEKF21801413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa7ee21b2045256992841404b5425a1061d3480c577a6f99c75b2237a2eef85. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEKF21801429.