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 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 0xb5849a92286fda4f8da2b877773bf5bab221876eaa39c472ddc180c1e3269a7d. 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/3483fedc-b3f8-498a-92df-1e7eb8b131da.json and https://artists.proofprofile.net/proofs/artist/3483fedc-b3f8-498a-92df-1e7eb8b131da.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 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 0x618fbd8831d5f429fdcc103c671db5759552b406c4c3b48a632ca5494255dc08. 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/FIAJZ2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3650f6404279402bedf48a8bbbbbb12968015f63626078b6c107aba68a1d273. 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/FIAJZ2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02800562f513e226cc4e7321d44a7df76352fadec1b07bc4832f0b30c5fdf799. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZRP42329127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf55d5e3c50293eeb3869347570339582c3addc528bacb6b1d84efaa1c9d2e0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIWMA2400202.
Mikaelin faijan BMW (feat. Mikael Laurent)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352590bbd04bf488833092997f2ca18136e0d668d767852dd040a9dac7f38937. 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/FIWMA2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35446eba531a5820865eaf20170c30fe57b11b3187368810b14ed9d4c4bbf681. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIWMA2400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd246733a90a5bfb3b3b811d647d955ad1e7b4692025bac214194af6e7bc75628. 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/FIWMA2400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba15322721804dd7bc7871753bbd2750c4b8173705872899d413c712cd40e43. 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/FIWMA2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b18f67dbf9818863843fefacf3611c4ef44eb3df99b174b1546a084eb7d9654. 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/FIWMA2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7dd1f902431e4d14e1ccc9ef559884b507d9635544a8ceb0ccdbb6ea5b8e71. 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/FIWMA2300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf037241594b38e3a12b3697de1e03b9dff480fc13c93b899a0318f7a28fabf84. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIWMA2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54e05c6f09fd44e66ea09c10a5caae143351bb66a47b2b06dd8a1a2b7d9af0f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIWMA2400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9936256ce0cbf393b2c076753683fd6c562e2b8bcb2e788fcea777dc8e1d1485. 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/FIWMA2400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971bdaf50e346f24a0bbf52e558389af1b850711afef5b164bfd15a223b2cf2c. 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/FIWMA2500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81635c717537d593f0255c79151c8d90867adfbd9b0febb3cbaa82a2fa2f9698. 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/FIWMA2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba15322721804dd7bc7871753bbd2750c4b8173705872899d413c712cd40e43. 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/FIWMA2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde79cd649440c5edaa65015b95ffe9b0832902841b9cf95c83a3a57811359889. 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/FIUM72400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb59afe94c9a70c32adf8ca67d0328b6efea6c33595793a55b51f8649ccb8351. 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/FIWMA2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7dd1f902431e4d14e1ccc9ef559884b507d9635544a8ceb0ccdbb6ea5b8e71. 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/FIWMA2300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4c277fa80bd0c9b8811523c8f87c6444421bcf25984bfaccdac153f0006948. 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/QMDA62238409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063de70cf3b13c17cc0d4d86e14c4af92996ca9381e10c1b36b95617eaf1a421. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6MZ2283293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297ebe41d497e7b725d359d876887a255f3c202577881c3fc11d9bcbd3c3a0a5. 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/QM4TX2260580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1a8afc8a4fc8dde123651c6abb4f92cb3576f816d647d79e57cbb33561b3cf. 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/FIRBX2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6df572ea3deedd79a0877a74188e6e1ca79d6b35c20ff61b980d12a1af17f6. 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/FIRBX2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31822eb97a09185b73b32d030117e61f05b83a3264e6a6daf55130a47f3a2a6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIRBX2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9781a28b40eb8b8379c9663286206f7374295d6bc991bd66a3bc3323742a3f06. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIRBX2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599ccc7ddfaaf5931f0895746c9b1929cdd03ae5823641f14b876ccc58c92bc2. 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/FIRBX2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a744963386a91de16c1672861e200684905370196c0b16c27f32269a4c4629. 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/FIRBX2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52385441b2d76bf303294c95325d723038aae7e0f67df504129e35c97c699a98. 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/FIRBX2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d395a902ba0f756da52ac9d6e390e80874e7207dda858b2693e9a31fdae0f6f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIRBX2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894a2d46377f24db7d7d82771ce50cd710ec621015d89237da8e3318c77d3dd1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIUM72400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2542d28a176e905ec9a007cd37180df1ef70557e5ad116f0c3b66cd8ed751f17. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIRBX2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1e7e67fd4d72b66c3a2ef61378c4a93f3ee3c0d94d81fb2b4807f90a822bcd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFME1951446.