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 0xddee3bb20a6ff05b98927b2eba80b34e1992141ce49ca180d821d262983ec9da. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3ec4c9c-6c20-402e-b759-aeed5e5f98f8.json and https://artists.proofprofile.net/proofs/artist/b3ec4c9c-6c20-402e-b759-aeed5e5f98f8.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 0x628544a53dacceffc13f3f47c064ab4dc510935bc4044ed8ff439487acc15e30. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:48:01Z), 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/QZWFQ2306434.
Switchy Season (feat. Li Skeet, osama5l & TB Mir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28b290e02ddd9c1a7f5fe41882938dd748da5d02e065c67f6fb52e161c9d18d. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:36:00Z), 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/QZDA82450468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30381898887bdcbdb21d4ffddbc0ef4defb18ebcf8cebbe1c4da1c4c5d9a875. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:32:16Z), 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/QZDA82450469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18265c4fd7a681c642342cfd14686ec0a1d4f2703725398fd804ebf97ff64fa2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN82498523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7085350c3d5a54072b00006aa3e6d0a957ae41717b4586f8def40d21509ff4f6. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZNWX2474011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d9232c22d09445729934b6a0966eeadbe449e42c6d85a7aa4b2ed8e23a77dd. 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/QZNWX2474012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954e75f5a1ce49d6e5371d0f9af37cec3becd86435fe12b8965faf9dad14cb0f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:30Z), 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/QZNWX2474018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cd94290b2ce649a333780c827f04cd20f80121051437b7099fd6d230cd2ed7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USLD91766097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1d9b5a2aa72efe80039f8a9d1bdb2e6a5266717166b60b106642858ddd44ed. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:46:36Z), 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/USLD91766098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26547d4921a3ad50a38c06429db4da358e8ee3264bbacb9d8c5fda486c750503. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USLD91766099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdb22d870c6a1ea442d048b7a68bf445c7b904508032103bd57f773ebb8257d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:09:42Z), 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/USLD91766105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdf27fe0101a1fc62e2d593bdd602790572dcac07908974c111acb515816988. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USLD91765236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d03e37d249510dd3eb3af7a666c78e227502d886dbf202335e60a66d4da65ed. 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/USLD91769022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9080f41fdc7ea40354cb08053e8ed199bd631c4f9177b62813fa59ab89c7eacc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USLD91770290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca863640247d10f03dc53e1a65f5ecc964b72575a6e41a82f5a11f4000df449. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USLD91771294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf71e848e6ac199863f497a12a15181dbd8050d857b153fad3d8334fb325e4a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USLD91771295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415877e31d96723904baaadca350f42db94332d7e2b011592395db43e2db44fe. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USLD91771296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cb5b3016bd98d9e8e2fdcd67c842b93d525a32750d8ea0768d769a834d0efe. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USLD91771298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf58dbc042016e01071b598e5fa0e6d159135a12cc74d561e398d4d71a54c4d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USLD91771299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0cfc9d8138a440e3f842ffc95dc0782aa0d9fce763359e73ef561764c5c786. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USLD91771300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2397037626e20db009bec83930ab6b290a9833a0c356a18f14cb2c2bd93c84. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:31Z), 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/USLD91771301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615642551d6c0f6d33650d6bb02123dea07477a1bb39a009781e532a292cce41. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:50:08Z), 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/USLD91771302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a2b67ff4886d7af91509399c1aff98923080d64f956886fa5416705af842ae. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USLD91771303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e615ca77a200dab8d11bd818ace2364dc0a372e259d2249a9c26e9e0585fea. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USLD91771304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff2046cf3e83975132ee04c0151d0335661a607c8656c51472f9b89f3bd8ea1. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USLD91775260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8351908c1411a73389f995d250c89dd6b44ebf1935565a4195cf512ef349159b. 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/USLD91775853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf91791d84640fb74fb3ceeceaeae589f75b2664b01fa19a5ff8164d95707a4. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USLD91775854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd24ce2df51b2f38186586b5e538ff142acbae3b70af96774c22cd6c250d975e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:38Z), 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/USLD91775856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec04f0d647737d25a3a27ba8fef08b05d14594d2163f06ebded24414488343c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USLD91775857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2265f35934d2a91f6736130778715571426c2e99e0dafda02f133354112b64. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USLD91775858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531597a454abc1732b0c37b02c69d2e263a5497017c298426f9d1eb0984b2dda. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:48:10Z), 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/USLD91775859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257dfe6b28630e0e309919199c09bc6223a04ef744d707b86e15587663aa5a2a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USLD91775860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7712313c9e72f8e53340778636b44f7a7b5b581c8c9f1f331c8fcf575c67a8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:06:22Z), 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/USLD91775861.