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 0x68426e27bd11d6babd4afcbf028778ff3503589578f412fb6fb7890f897ac75d. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62cd03dc-31c7-44b3-9242-9b89ca010945.json and https://artists.proofprofile.net/proofs/artist/62cd03dc-31c7-44b3-9242-9b89ca010945.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 0x8118ed66db470aacef59802efa9917e0f60583b4706dc06b2c4dad69025e72c9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN62289644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea42678c4b94a7b7466e7895907c9ff4dd02f75aa0fa03fd91b40e7d83fcbcf. 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/QZTAS2261376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f6d925521d2066f025a3b0f4956be4482ae8cbf2c435f52dbfeaf9509a46c1. 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/QZTAX2242781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ced218838eb9f1af9f2f19ab8a125efab179516954f029f9054826994f74160. 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/QZTAX2242791.
An Empty Grave Is Just A Hole In The Ground
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35d081f77d37a58eb7f28a93d7a03264c70df8d5ff3034f35443a8229084c81. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:47:15Z), 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/QZHN92569426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb7222abbe50a8715a9b0da357b18840d3cd6df7ea34fe6c5d7260e54f5b6b5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6K2559055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28758fd1ce5064676bf343c708d7568e159529f67bc2c89b7550651f2db75c1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMEN2598693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518083d4d5788e0aebda264580eb3b0539b1fae7c215a71527df3e9b04cb0683. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMEN2598694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d38311722533c86c740a99b2e0fea8561c8c7f4a4491b81c6f4d7482282e26. 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/QZMEN2598695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa98810c6f41cd6bd81d318ff1a690a75528597d5d3ca84df7c1c626e2759bed. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMEN2598696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9f53ca576415ccb5881213a7b7ab6a58f4085ed954aff42aa9ec51623d548d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMEN2598697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d8bfd63200436bc9158c2cd17d649b8b707922a6293af70eaf1b86ee4462a8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:07:17Z), 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/QZMEN2598698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518c35e36e074f5c738dc702064baca0c8821208f4f419490da1460ee3f0a3f3. 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/QZMEN2598701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a504cc873a922408984b95c714aa43c63d2303c64aadd0442faf64c93f95520. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMEN2598702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9616016425409f720129fe3e1a229d2c31ba1a203f3abe6dfd9054526debf3b5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMEN2598703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d5c801a23f45df9acbc3f0aac5ba3d58331e51cbd37d56f99d1d0e15d57325. 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/QZMEN2598704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de2b0e2685e9976d75337b31a27a40ecc534bb03d792185567987432dec290d. 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/QZMEN2598705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56cb227f35e330bd418b413b5ae27ba2758512015106b1129fa6855b0b5f034. 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/QZMEN2598707.