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 0x287a3405ceadd8408844356f5d044d5792e0633245900044e5e4c25ba78325ef. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e1582e1-a1ca-4f2e-9f9e-ab7006085a53.json and https://artists.proofprofile.net/proofs/artist/5e1582e1-a1ca-4f2e-9f9e-ab7006085a53.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 0x7159679e28c3e3da2c06db15139188bac54d2cd160ac61a99aaa92d1b0968f32. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HRA261481401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7a3f835f68aad8e09c29439046a30d693034e4f6da4f7b7bbe4663421b8f35. 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/HRA261423203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392fc6e9f42571916a39dec0d0c91b326416aa5922592c4e721ec2f4ed42789a. 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/HRA261423204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f06b06f202e3d54abfa2feeb3b813db8a35a72079e734d61af664f8aa15ca2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HRA261423205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1912b9f9dc96ca324aaaf7fb4ebe38fef14b00b0589a5766082886d68523c27e. 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/HRA261380601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d25f6785a63a90008c8fd73d147f504f2fa76da449e96251686e85b3612f28c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HRA261219919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8cd3e86202054af34fc66fe4db6ffb26cb92fbc413aeefec736ecd18104835. 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/HRA261017011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c9c74f1b0c8d06c6ef128c7207f327b948479c8e063103039f6e1bbbcc4250. 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/HRA261017012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c74ff0293786316e6e8d081ddfe4ea2fdfbdf71dda9dc0ce95193f2919d8a9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HRA371200024.
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 0x23639bba7745406309a84f5d10b233a67f3d6903b95fc78c298896970cc3cf61. 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/HRA049836511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282910097be51925e186d5e96c2d3d444e8046e67c636b971be41a4b3c60b4b9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HRA260607402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb0da56c1d874a368f797ef933bef30d5e37c11c4350a5b288d9f959112b72b. 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/HRA260607405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e72d0cca5e1379ede98a35fc2df9cb198264049ed230f1010c8263f19890bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA260607406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21638adb773a86507faf654cf69a91227dfc523ccccbae262c35c478ae62d975. 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/HRA260607416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f68401a3a681f376aa370d4e881e18d948ed883a207831ece03ebf4b6b7b340. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HRA041062499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a5580e7705380a00aa011186ead37c4ae245d301e2de9e6363f0faee75f52a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA040960491.
40 Velikih Hitova Tulum Za Dušu - Evo Noći, Evo Ludila
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd80f3265bf7cea91fdab23061262889bf66fe0ea26fcf43370d2b6e9136ab3e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HRA041582490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf486593d764f4351c3d02de4eda4652336863e0511726521ea1567f44f8f05. 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/HRA040638850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb672765d19571f00dde679827d581119e915866f95de8f8ae83bfef2ac4de845. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HRA049021726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb101c66c2fbd1296318716f906db786af8b13d92226390db39de56f18c4a262. 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/HRAA41700107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f592d7a5170d73955804e431af120e1a1f2bbf5de8112e5661bdfdee710ed6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRAA41700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4787bb05b027d7d29ed3c9a7c8e810bf13b4a8dc253d5c39f28e7745baaa9b. 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/HRAA41700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62557382a3fd86af68ea5f91cd44dab5e99aa86f01d775bddf37ba282a3fa58. 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/HRAA41700115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187c11ccca91590a1fe885da707b3a9e4be2c6ddb95d39b8691338ffd6d497d6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HRA371002076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ec04df6da74e5f02bb00ed8a7ba95a85d8fa4a41e1b6b390ca80bc57aeabd1. 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/HRA371002065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c053ab86d3028a734a3e7eb86194845fd1ed2a0c50663c107478e8e33f281c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SIC030212106.
Vino Me Je Opilo / S Ribama Je Najbolje / Ja Vise Ne Znam Sta Mi Je
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff81dd0a3525bf3b608de20916ea01bace8262a39c3c56f28a09d80a719a660d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SIC030212112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0d1a682b0f1aa24236d4cb900641b67900ced2b1e26d35c481baa5bbd8e772. 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/HRA040142623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe27f12e56d119c6411dc7e870244c86fa7fd8746ac21a417913343ff0a8ff5. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/HRAA49900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c449b8c3220d2523fdd97d0a518e29e4c8429a4796b51a95dfc5ce8377459c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/HRAA49900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfa528f23ed6dfa56b38ec422da2ea7b846be4cac40299dffcbff3cd012bca3. 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/SIC031300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca9240ce64471aa6f5b2ddbb0cf99d036ead9c0bf50cd4fc74f922c56762c17. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/SIC031300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301351682a41df0f52d4438285dfc65818c6aa2bb96f58860fbe460b06e485ab. 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/HRA042401717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12464ceab7132c4a104e6c1f365a925515e0b459e6f03f8eec36a14d3e4516d. 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/HRA371200383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb349b6b9ce04e2f5cfbdc4960e224347e28ee14aa7ba2a1384e9616580983ead. 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/SIA421000189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8962f22b19f921be2f5ce26b9e0a1a43e288f1061cc8e19c1a1c9bca2a5d2ab2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HRA040635750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c5cb6d650cc81548569fb160f7b6223b5accfb3cc84960ffda28fd5d551c9d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HRA260607409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c2627489aff0cc1f92ec7244469b207f50d839c41995e2104a5f252daf69bc. 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/HRA231500018.