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 0x5f175027ae0de71b512d3267727490ec92cfcd6170faa2c0efc14739da10129c. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/781d46bc-edb0-4329-bf21-028e716c4084.json and https://artists.proofprofile.net/proofs/artist/781d46bc-edb0-4329-bf21-028e716c4084.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 0xf569acdf4394be190310799730c42aedcf8bb100e7abde82bc84a4eb7e077e33. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TR0411500142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe53898ddcbd156bc412848175af11fca6dcff8690532a22d50a4d224f131ea. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TR0411500143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c48676535949ea83d3b6fa2d3b569492dc93d69de89776df3741907da8b5c3. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TR0411500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758c42af50b8700bf76c7b46e9b7889fc6260610f1ab553eeffe62f0ce01a690. 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/TR0411500145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4df61d7e569291eaa6f90ac5d2b0f4ccbc08b73746986a81d09f0a14f65b1f7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TR0411500146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f6161dd72a6bb4ab24b87ef4c3a56b203bde7bdbf4a99e22cfa42662c51bf8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TR0411500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cec4e28e5e382f1ddfa459677e585cb98eb40ba47d6d6985d85da6be8d7628. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TR0411500148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c7ccd4be6796987791759c129737ebb97daf450eac49c7ed905b8b7eb6ae14. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TR0411500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c498e6ae0edddc5a7c144a8177e43443ad8e1b6be2dd92dcb6941ab5a65ed4. 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/TR0411500150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710c85fa1983991a896b0ef7f12331367151a01ef92700ace5c4d67d3ab3961a. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/TR0411500151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde409536c467e7f5f8838cd7a5f4ae3ba501574a51d6a9aa9c68b26d41c6ad49. 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/TR0411500152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7faeb8166342defa22880a1080e7f03e781efef032a10ef676d4e59380bcec5. 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/TR0411500153.
Bozkurtların Anasıydı : Mürüvvet Kekilli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6db0cbd9d5d5bbcc6c18121ed620429cdc362d5de6c0cb2ea3778dffeedc92a. 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/TRBAH2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d4ca9d9dca052085c3a548aa948338240221760f52958ad907eb84f9996637. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TRBAH2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb585228a7eaae7a875165b6135243f77a8095b0c296c1bf201514c2d13e08e77. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TRBAH2100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ed8434ff01d61058f1d70314f8a471133e715bce872985a701bdd9254ec18e. 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/TRBAH2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63984644855d4a8066a5961e294b760ff30460ef658de3b5ed66ca49a43b8018. 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/TRBAH2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cabd4cfa0a69d89fca718c3221d2fe34933607e33e10dd48530f34a68ff424. 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/TRBAH1800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62162c87520e4a07a5de00f99a6ebe6744485a197aa529e919723045686e1a4. 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/TRBAH1800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeced69ec9e7e46f630212cf2d8b69fbdf53c490b6defa8821d80d3b9fa56cbfe. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TRBAH1800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b86a4c46b3658d482aeec29a26ae801fc3401d3dcffb93b55e7ba31c0b1c0c. 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/TRBAH1800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96c3f7f8075f2bbf4c4249f41dfedaaf355bdae5a9160f24e6cb3ca973b94ee. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/TR0151400522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7693a8dae74ba0f9cb36bb773f0d3c08760412e9568c321bf7448ae5ee830e59. 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/TR0151400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3798ba43cb0518f247bce8b5c4df22a10e47ac7841bd3d959960e81ae2952f5. 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/TR0151400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b0a1b7cc1225a60929d0717841db63355ca6a171c4c3a45c49b5112d7f2a81. 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/TR0151400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31c650a09468ccb69828d037a9cccec0140954717664ccbef632e551ca484d6. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/TR0151400283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8263509ec0eea9f00b5f1d5362c74e0f0f216383573ffda32f494c465924ef9. 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/TR6721000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d69e2c245f929897183d719d910e34a4ed9f974e4feb4739f646a076a3f1e0a. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/TR6722300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f1117dcf928ccb9fbb91609f9f2fdd72b3c914f66f3bc473b1bc4e7a71c160. 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/TR6722300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba0b361150d50b758b4e396e38e98a4c59cdedd11348d71684ca17043a4e23e. 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/TR6722300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeffb905eb0c7182efb18032c6a64182e52cabd7857bf86cd7a2568d720955df. 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/QM7281807052.