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 0xf4ce20a91b3457005944b222a8dd0cf9869dd2e87f1dc810629ec6f7f318a4aa. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f83dbc5c-a8ad-4862-94e2-3de4b2542ccd.json and https://artists.proofprofile.net/proofs/artist/f83dbc5c-a8ad-4862-94e2-3de4b2542ccd.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 0x8dbfe3c90df25ccb42d9d174890022e229d42f78d038c6d3192698a8a72eae27. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:24:56Z), 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/GBSMU4423541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe844518402be65326b9b8d0d7c10d2c2ec1f3e34614b0d88cbb445119e2de21c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBSMU4423542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c08984b420755c5ee988f92af760bcae8b7f4170c03881ed6290f3dfad4c050. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:52:00Z), 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/GBSMU4423543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ae1a07cc1383d69a99a319a2d36118ab8505d8aeff95b8d5d978bb8f65ac74. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:35:56Z), 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/GBSMU4423544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921038efe045d2a94c16105f6ec22de31d68b6a879870a8257e02169686f36c4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBSMU4423546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc5178dd71372d0f79dea7cfa36456040321de36cb38de453b141aed00b2288. 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/GBSMU4795300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edeb0125102d640672b399fda440520bd84311a2d5196b5768ec15a5cc781c7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBSMU4924308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fb3681caa23de7026f0c5bb808c4779337f88c782fa2c9b65b41546965f2db. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBSMU4924309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee22ed56c4258326b062e655af96f03731a6a6f59c381515168afe3ea66c937e. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBSMU4924310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489c093a3f81c0c5f1d7860abe5b178b36b911d35917404b8bc29f263b42f7bf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBSMU4924311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8163445949d677d52c448d0387d0361d28b094c3da7d8cd5fce6869e192b0136. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:42:50Z), 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/GBSMU4924312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4723b9e85238ce2f0240e34dff3fa12191cfb342fb6dd9ad2159a03f25db23f8. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:27:59Z), 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/GBSMU4924313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141708cee19bff471b02ae05033577dbf8d3ba72de9d3ecbdec39ffaeac90fc5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBSMU4924314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbdeac245051f9c72deaaed88ff3205ac41b9da495f6f40b1ebb3a1f6b18423. 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/GBSMU4924315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8025024f0024d71c70eb622abf1b1d8d90e2aa90ef8742e1666131fca3616da7. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:57:03Z), 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/GBSMU5026648.
Have You Found the Yellow Sign? (Metal Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f896bcdec35c3cb64957de919cc47f8824bc73bb20a5c1dfa23ff717a1d62b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:48Z), 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/GBSMU5026650.
Have You Found the Yellow Sign? (Trip Hop Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cad9a81a14760c6d9a135125401015cfba389b0d72bcfb219c444ce89f2165. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:55:36Z), 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/GBSMU5026651.
Czarna wata (Inspirowane opowiadaniami Jakuba Bielawskiego)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75151fceef7bb257152daa69be0f82b2c16eb009778a1c52454461dfd72eefc. 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/GBSMU6192784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3493643a64601c71b38fc69226bfa31d28c12a319802138c8442c131846a02c8. 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/GBSMU8100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ae9e6d1cad9a5a5d91f8978cb81e596f363e044e374e69a80f5c327d727362. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:33:04Z), 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/GX3HH2241435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d20a7973e94c3073d03be2c2de3045eaa4207979912bf2afdfbd1f9343e68d7. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:03Z), 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/GX4R52296342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8978147121112348a21647092c4c112dd165e226a6fca6ee6429773542304d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:37:44Z), 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/GX4R52296389.
The Street of Crocodiles (Album Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd2ef8501aba1e5dad7833a6d799d0f125490475475f1340d713706baf540fb. 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/GX4R52296390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120663abbd7cae352e8e9664de205565ef24a9c40ae1d09e96eb05262cf4c901. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX8LE2331690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc488e229a35479c3fb06a84a0b787a02dde672c077eacca3180a76252166b64a. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:58:04Z), 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/GX38U2326330.