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 0xbc4055f4dea90423334dff8c7d6cdba3c37ecd4204308c3cecca5b1396d4b109. 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/897102b8-1a4f-4205-a290-0b0b302d9030.json and https://artists.proofprofile.net/proofs/artist/897102b8-1a4f-4205-a290-0b0b302d9030.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 0x58100a47c8ec244601f957113abb44a5de0fffce018d8b11091f5b2728ddbb6f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCABY1451273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab4283ebace7b802a95879e3bc3a7104616d2a5d286d79af6e6cb83a85dfac7. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/TCABY1451274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1c33870a19e657d8bedc388f185067b993ad37935630aecd41586f5065e243. 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/TCABY1451285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40aa10742e76b3c775fe935e1d9bd6efed60507c79debd88ba99aff203920fb0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:26:28Z), 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/TCABY1451290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80622ca9b5d92b496664db267df65b01a2e7478fd571215b16c82c85d108c8ab. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCABY1451293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34797337a98eabef27d90e366d200808ec8f32a018760a6638210d11e6073079. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABY1452070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeed0912eae1ddb25d91fb74630b9bb1f160c684344c52491e50cb4019b57920. 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/TCABY1452073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0b0fdbd3ce70650b1a47ba795654937962a626cb46a58363c416cdc99d9639. 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/TCABY1452097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550f08fb8c48fa7210d149a63c02392b4c5e3ba8b4c68de95ce2976099ba56f9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:53:33Z), 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/TCABY1453973.
Die Vriendelike Dokter (feat. Bongi Mthombeni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3aac2ad14b14c86f0fde73d0d2c868c6b0188bd5e1f29fdba3a747c1a4c513. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCABY1456310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fd44888560315709caa718d1754ec13c05e085fa2793163de94b8bfab256e7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCABY1456315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e42e131375cd81201dc06c04b1ee684505f68a56e41c14a084cf183dd89b9a7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:43Z), 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/TCABY1456497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3136b33e3c354ad23dd8666d43a134227547a6a8c2e0782a796efd9367466834. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCABY1456502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d213c03e224bc9d8c4bb03b91133997a44f3e48e8205dcdf2922009fd6934d3. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:25Z), 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/TCABY1449320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da4fbf7ff4f9ae3e7c90d726829969cfae6e9949ab17595e8b420b2cd534f67. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABY1449322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae607cf775dfed2d466406fa60e1f211c9c8a204dbb8570ae7d208c318b2f16. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCABY1449508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba33c5e09dfdbd9e88fba82c9af6c0b86270b79c24eebc035d9a5c695a4ce2e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCABY1449519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5332f21445b3dad0766f4d2425e1fae4c846fbbcb66d46484e6ac4a7339761. 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/TCABY1449530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305281f1c15b889122d3564aedcf07443b74d537a48768c90d9456c546ba7127. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCABY1449536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3608ef9be8d16eb897ee94a61222b4be98a4e095ae61d866c9b50bf45f44f7f6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABY1449538.
Die Paddakonsert (feat. Bobby Van Jaarsveld)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ca5d968cb752119a927a21a62e296056773693b10f582f84425ee49d72ad18. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ZAH211500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1d1e502fc4b3ea6c74dd06381214b76aa709de3ead2a3e8f2e8e12b12eecf6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:15:45Z), 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/ZAH211700003.