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 0xf218d6217578f5d04c6ce3daf55c2072c4c62bf9e43f5408778b7f9a6764d073. 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/e4047940-fa65-496b-b8ea-873556017abc.json and https://artists.proofprofile.net/proofs/artist/e4047940-fa65-496b-b8ea-873556017abc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Geluiden Van Regen Om in Slaap Te Vallen
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 0x36ef1089e7f210377a7165bcf94873886adb339418f986ed27470da72c6a80b5. 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/TCAHM2301288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dae7653789352f1c3655fddb46f5fe29a361cddaf15b00f5835d37ec6b0d6ff. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHM2301289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454e38e3ab4fedd655f2013c09f164c58f929312ca50cf56990c3ffd6a21ac8c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAHM2301290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc622206bd4283f84dd851e0a72c999da78e048580216afde4858fc9758adcb1e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCAHM2329527.
Geluiden Van De Wind over De Bosweide Geluiden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadc2ce420cfe2be805e9af0de58e673260873bef669e3c121db38dc81590911. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:44:05Z), 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/TCAHK2326185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f76d8302db015889f465952397b41816ca953ec83e73f8e5120c5ad686746a. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:28:19Z), 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/TCAHK2326199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4efca86d8bb82f27ab1379472d6c50aa81a6357efff6f2c006b88d86e75bb7. 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/TCAHK2326236.
Ontspannende Knisperende Openhaardgeluiden
Geluiden Van Het Amazone Regenwoud Wildlife
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6cbb744226a0f881c3f50b80ec69f1b8f78a4b6a8904a1ac0cce35446af927. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:11:37Z), 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/TCAHO2329237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b345dac8a90c19ae15762e6ee41db8e2972d7b479987d718f23a8b7ebde898. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHO2329240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368eb7cd40b79045923d6d094ed3877b6a0df3197cc39fb4456bb2e4ea8f9f96. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAHO2329247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daf362793ad4e8138e8924bf9b5375c3067f94aafc889b5bd955d1db899e7bb. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TCAHO2329255.
Ontspannende Knetterende Openhaard Geluiden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebbeae075b41192b16562883e29022304c9403aeb55b3eaf5a710b4deda4b6b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:39:10Z), 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/TCAHO2348712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cf838445e6f1316f9d1292313d437ff1d438115d097387567fe9dfa5c96de2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:28:35Z), 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/TCAHO2348725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3e3aaf63359e8f8eaab145d5c4bbe6012f8a9da8c5fbdd909e6031a994b62b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:56:34Z), 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/TCAHO2358173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c795695fdf465cb7367c7ae07a1d6b0bd0ce777e37cc30c32b153e5e5305b9f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAHO2358174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855d8ed7204300bf4cd9854b3e7a5df27b798b88b445cb8240347b532cc54339. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:06:34Z), 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/TCAHO2358182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5605c1ef03221646ba59879513b391aa2a49e6d2dfe2fe25b314031169c6444. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/TCAHO2358187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33ed8b74720440a0cbec47cfbb0bee6b4ad19194681c19678539ba00713fbfb. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:45:33Z), 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/TCAHO2358244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b05564c893759f1d0f552e1f69e92ee937a91b668d4bd465e6bee5c9d9cbee. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:10:44Z), 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/TCAHO2358314.