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 0xec7ca69b0ba5795fc2df8d9612eb3617433b358f6e1a2ca904f4116e6ea5f623. 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/39e6bb14-eaac-4db3-873f-6d7b260bcfd5.json and https://artists.proofprofile.net/proofs/artist/39e6bb14-eaac-4db3-873f-6d7b260bcfd5.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 0x9400894b24aa1277ff31d094a6542d1c996f66d9e30d124a2793a2ba5a7e1ffa. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/IDA401805107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14996c9431a3055e98aa74eaca28701797497be6cdf2245865cbffddfaffa336. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:49:18Z), 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/IDA401805110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9745216d9bd730afbfa574c33aa3353dc01c159b0df2957df5d688617d286848. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/IDA401805114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131bf8651aa0e43a56848f4468f302be02e79dc76bd3b1cdb08bb98b3219e8d5. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/IDA401805115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5c5a10a05331d55bc973f59d2b8964ef5e62c37bcf2c10e86d5498d1bc18ef. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:24:45Z), 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/IDA401805113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e90f5136592682501e92be704f8756c964795cc7166f74942923674a95eff6. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/IDAB30607107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98e4e80489dc18268347c3892064a894eb508f26cfba39e764fc117b9d8284a. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/IDAB30607112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4498859e154f029fbff60e973f5c9a01ef38a741e6921748c22de9f31cbb0f44. 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/IDAB30616194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796202d39f0eb5eec6f77ca1252be7363d74061a2f20dbc654215d7bbfa7b7cd. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:01:13Z), 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/IDAB30616195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ac69b3b06d0ad45cebb7d82e782013abd78e5f389214f872128571e7df1798. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/IDAB30606301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905a517393ebd6b8ccde046a4d6395d665cb587db42de25449fee6236d44b847. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDAB30607109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37eac4847976a75ab2089bfcf616058cea2545a96eedb1e7cdc3faf058e8bf9. 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/IDAB30616193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cdd036cb057d2a86f016a8ea896ea8503d5cb353ab815f9d5d1291b03a4ccb. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/IDA391300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f156057df9d23b9a8873321933df01e808961288c5f8bfa50841bba5c22386. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDA391300127.
Hanya Kau Yang Bisa (feat. Imel Ten 2 Five)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e5ef15e3bdfef3350b32643ecfa1313890564db299fabbbcf76e48c3998443. 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/IDA391300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85188a7aa45276780e7a076639b6972c4760c63743d65cbf1d8d2bdd5e5b2843. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/IDA391300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa632e7e170ea06fbd54c4c33148de158e2b88ec5cde7f26dcae9a59da754e0d9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IDA391300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e84a1da919d8a305d2791e63b81c84a795ac347dfe5b3a7e816512c9cc652ae. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:34:42Z), 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/IDA191301063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6c4806569f3b1449d2945245e49b0deb914baf09fec4f93baccae63ed2e435. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IDA191301064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c6360baa77c6e33240bbcd06653f9f5331360d35399e1fbac7e7fcd8d31059. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IDA191301066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4d6ff536c963df15d152538b5e729fc52a69ea30e0776b66f16b3338b0c2e3. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/IDA191301067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbec34e4907e5da89c459eebdf7e28177590c4378bbbd14237526855afe3c26c. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/IDA191301068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e89ce0bf44cae635ee834fef96b6526e4b7c0643ca2b8e4dffb0a065c21a749. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDA191301070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03382c9c17cd6fad9ae623ed193df2f1561c241230ab930de529e8f127aa4fd. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FR10S1627551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8d1eccbc68cf1edf6e7129981257cf9ed6be914570979308d0c89640c82577. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR10S1627555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5dbfcb838914dedcff6a36f27881c1a1d01e6ba3ad6b32b513d90ede958d9d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR10S1627556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6069befcdc26a1ddd15d6c12561d90d2840d298ca1a41fce2007e393d58f3c37. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR10S1627557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb118073ed5da9d3dfce2f1a76966bfd21c1413285ecc40c5acc46855b2e862b7. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/FR10S1627559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36970c7a78b4496aafe6254f1855d30b26bfe8923b073171930f5bef13987174. 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/FR10S1627560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca5d861277663b5c02f5662b5fac7b490c41a4b2e3178789c9694f72b6b1d04. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/IDA122000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38633d396bcb2e3f1354430b5cb8e3a544aa5300d5b2a37eca534c125e3f837. 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/IDA122000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8871c1509ca1b12907a3e02abb40ad2f9a3f19e262dae109895297a407cac6d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDA122000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73cfbe79b344b4377f6f587b31c1a099dfa955226f19bb4882c7ca0cc0cfe41. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/IDA122000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f845011b5606c64114ea5cea9a06350cf32c8ffa815e75aff538d07759fdc92. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/IDA122100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919eb4223616b99b759b265c0916ce532702cbae2c6bd4447d67634bcdd4a780. 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/DGA072477538.