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 0x160f02f726e3b0378798cde4f49dde15214fe2b358bdfe6a17530ba13f2dc30f. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a3b69d7-3773-41de-bc9b-5262a2a6391c.json and https://artists.proofprofile.net/proofs/artist/0a3b69d7-3773-41de-bc9b-5262a2a6391c.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 0xbd5540c6eeaeda44a40b0a629bd1b045ab835ace36fceb075246b75127a55714. 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/GBLV62130793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e26288ffbfeff7e59e52ef99d05f7ded6ed6a2de0ffef0850ca09a3b99c7ec8. 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/GBLV62130794.
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 0xb0483ca710ab1f38c4148e93eee9001466f28c7fb7850b1c9d528f426a7d1bc9. 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/GBKQU2216843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4324cce94bc5da40d60511709ed5d44406f936cb3a9ab1d5383d0cf8048e6a. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/GBKQU2216844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70616111209100ce1e720f213ef76dad5929713561fbd95e47a14b9f5f594c04. 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/GBKQU2216845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffeb91d3360c4e1e75d7810ac4795fb38bfdd8fb7e06eb6ae56406c61e94184. 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/GBKQU2250216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7813ebaec3dead64888195162d58acf2c3085232f75b825046966c28e3b703f4. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBKQU2250217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedceea87360c700c4dbca2d0f2b753bc0b32c84e268bba1bb5fad782cddbe0b1. 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/GBKQU2272491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9c27431478d2fbfa1afd102e435c97e8fb78cdcf032ce46ca61ef20a6c0ccb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2272492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584df458561ed047311852bffa78ff151726d29fdad370e2954b8fc8b7b7e378. 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/GBKQU2272893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5feac9981df3149fdd96f604a18b4207560e5430199fed69e350f04228e56b. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/GBKQU2272892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f9ccd0ce18f72eafe5858df2429e7dc5484fd425eefde0fc96bb5a92cf051e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBKQU2299488.
Enhanced Progressive Best of 2022, mixed by Kudus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a59532367d668266ab269bc391c94894069fd60f6a3f0eb57b676580053371. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBLV62316800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964162eac85f82e713cc910f0eed81adef9b3d9b8bae7042429f23bfe7c17474. 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/GBKQU2403900.
Digitally Enhanced Volume Seven, Mixed by Farius and Elevven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329f3a8f1a9a3f2a2e541b77e44dabec8ceb67582da06f565cc42788ccd57cd8. 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/GBKQU2254726.
Digitally Enhanced Volume Eight, mixed by Farius & Ruben de Ronde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31a12e9555602c1fafbaf09d34d81aaa040e3dda5cab97806d25b5524277d7c. 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/GBKQU2396505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c0649ee59c03a8a5ae313fdbca729c7528e0feddefcbd5a047d13c1812c9e0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBKQU2408322.
In Search of Sunrise 18 (mixed by Markus Schulz, Matt Fax & Dennis Sheperd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85d0121400a97222ad5beb07191e34522973c54522ec508c4813995b0d73459. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLD682202446.