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 0xc0e2cc914482adbcdbc188f4f7e09df560bb3779d19b5a41dae4ebcc2b7fdc3e. 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/ac4de454-a2c0-41ed-9f4c-dfec7b74523f.json and https://artists.proofprofile.net/proofs/artist/ac4de454-a2c0-41ed-9f4c-dfec7b74523f.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 0x7fc7a59be96bf29f74f1d4a7176e1e1030dac33016718dd827a5dce7a3325d39. 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/CZUM71900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadc83c46877edf759ba73c9f1820556ac9b50a5bcc107b72826f16a1e0ced2e. 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/CZUM71900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578302e80c0c88dac11c9adcf4b51f2c79255f227f59536657dc5a0bbae388f3. 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/CZUM71900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe572b0873336eadb4d6753d0dde3861acc0a53822dffea11cd7b0864799bdaaf. 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/CZUM71900182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd3581ad1fcd1d5795159825577f8e3f69708ae700f0e66542fee7f9f790c59. 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/CZUM71900183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe821c0f68c13519f1048acb7f68c53776fdd0dc9534fd6bb9f053c9d46d8094. 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/CZUM71900184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2f40123f8f3df336728c5cfb9f09a81821746a12a38707e65e9c34ecda8dc1. 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/CZUM71900185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1691f458b14f71313514ee3ccda790d365131062b8c63fe9843e2d95f2909776. 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/CZUM71900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931ad0b4a79b6b3f7585b2bb04ddc38f2e406c997341a2927c7d30d1dacc0ef2. 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/CZUM71900187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12632fe709e783cd36294660b5d4bc0242e3a8c981dcd0c090e70506df3171f. 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/CZUM71900188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e6d2e64ba17f8062e5278d6892386092b238a8fd12f434192d31645150304b. 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/CZUM71900189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b1d7955160bce1ebdacc662743dabf64c317206ec93c8ec2d6756dd3b39823. 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/CZUM71900190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521ce3758b136851ee1d92dab102c635ec906a0944b328564646062357fdcf22. 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/CZUM71900191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe572b18c8531705d69d63c7eb8c61bd6a612fc96a97c545b877ea7010bc7e649. 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/CZUM71900192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8f0d45563f6208304a6046ade277e72ee02d43cdaf27928a1d886c58d06aca. 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/CZUM71900193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66131f41a2a745dec8c3211912c6d6f4d1c6dc3bc85c5658f23c0d25efb54e1. 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/CZUM71900194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70fb1d591b5109954029367e61013a22155fdd0d96f87be3e5a7fe882979a21. 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/CZUM71900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cd35d8f450aea734b30c2a11fb9646f39691fe8f28872962b983afe7e846be. 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/CZUM71900196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe830fcb11533b2ed0036be13ef67947946500d18f9dd0ad09ba1d9ccc95ad0cd. 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/CZUM71900197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3583946f85f832bd692e616c73762bff648380cf3a28ee41a52176901c443534. 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/CZUM71900198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a1d5d731e97c1c174811ed8b3b5b6fa5bbe95875d3e0f5071f5005eb5ae83d. 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/CZUM71900199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf79ed43fb074a9482adaf09644af029b98ae3d63fb7c29cc8e525cc081a2be6. 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/CZUM71900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed9397778e5f625eb6dd6dec5e45d62401284751ad33a65c9eb628bd7d41d9a. 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/CZUM71900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55244af99d44d05fe77a7ef8051c3e62efa6cc37fbc62fc829a4b99db3eb2ee. 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/CZUM71900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b483ea7103bc1faaff59ff6d86f188fa48c18834181a78a03f1836fb269a334. 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/CZUM71900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e4ab7188f0d4d64282c2dbe32f694d9d7e1b21e96ab2b35de42f71e4d8caef. 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/CZUM71900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40c318daf303546dd4bbc780317c575cec5fa745eca1833c419b4198f3674bb. 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/CZUM71900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fa49b58c61a2a77a4a262fcce9867fa5d1a4e022525322c3f31cc5199955bf. 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/CZUM71900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc058a72c22f9c84ad156bff49c14ba99f09a6aa5b3e8448ec29fe144fc2be1. 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/CZUM71900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12334225f7a257c6a032a70142e227aa42c8b176f300f4d2e0e3873694440f6a. 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/CZUM71900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e58d6b1413ed85c0924cd8060ad4db542fe62096583de80e2c4b8f27e597ac8. 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/CZUM71900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf718c26f2734c3fd649881a2925c8aef9e4e076fd3b05227e5fd81381d6313e1. 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/CZUM71900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbd48e55dd571ff2ea57c12980a9fa17501607642d78e24d92027ebbde53e38. 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/QZN882566739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f60257106a38909a77aaeff61e5cc50c19e874e3841c48042561ce5d34b178. 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/DGA0M2301119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea484c030ea1663439809f10a30561a0562c4ddebb2556035dd543b0deb0147. 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/GBMA21969181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b5bdfc9a3413cdc92be56df353a4a31f6f88a5bc5ec97424672e194429f896. 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/CZA232001087.
All Over (feat. 67 SJ, Yzomandias & Nik Tendo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a472991547a9c2d0b8eb8cc77bedc0dc13ef60c73792ed91f8f13004631a7e3. 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/GBLFP2040527.