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 0x6e9439bed431e06155d0839143ab0d1b53af5b1f81882e4e679c2155da58e42f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eaada052-a2a5-4224-9309-51189b8b46d1.json and https://artists.proofprofile.net/proofs/artist/eaada052-a2a5-4224-9309-51189b8b46d1.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 0xd4d2153998fe08f374eb424822bc4d37c395c0d9fa3b250d7dbaaa661b90e820. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:00:59Z), 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/FR10S1545774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d1bce88d4a60d00e4e3839910a60cd8d7b986e8a15f940cb790abd67090cef. 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/FR10S1545775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff648d1968d3c857c19d96e399577ca986f08fd9c53700bf74d9fc32949c7f59. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/FR10S1545779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c67e39a622862d71cd2eb3ab4a6e01f0c6b7eee573bfe076477f590b542433. 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/FR10S1545773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d1bce88d4a60d00e4e3839910a60cd8d7b986e8a15f940cb790abd67090cef. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR10S1545775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77efa639701ea93d93d6c6ecc750417efd82bae0d563613f19ee86e2c350db12. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:46Z), 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/FR10S1545777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20eab35fae5781c89bb1a1ee92e353c129dd7b476e5e0e786e996ad9b19d317c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRX201656254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8f1f12d29146037c81c3eadb792b342679789b29fedeaa05e2ab2de60b5f26. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX201656255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7ad2303c6cbd583dbd77455fd843fa5ea3a3fc8e03b2023be9693a2f5046bb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX201656256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980d846049f22913d0e5fead5e328b469991963c66765dc95456c7452e00966d. 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/FRX201656257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb988df8b93bfe116a280311bb7a0ebf3f02b6fef67b707425459b4faaa1d39. 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/FRX201656258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5d0092e2dcb946fa99f39d46b350648283cded525700e2e20ba6a1a22fafcb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX201656260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1141b3cba93f5140323e0ae787641890f026dde2f439e9043a8d97b6c78dfc11. 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/FRX201656261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ecb57f745f2bc810d8c7f33f7fd7103cf45098116d1f44a34564f74307d72c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:51:08Z), 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/FRX201656264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05435e74b6427f6e93c39a529b6ff321ae3921145f9dae646e9bddc317bdf9e1. 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/FRX201656265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7ad2303c6cbd583dbd77455fd843fa5ea3a3fc8e03b2023be9693a2f5046bb. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FRX201656256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980d846049f22913d0e5fead5e328b469991963c66765dc95456c7452e00966d. 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/FRX201656257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb988df8b93bfe116a280311bb7a0ebf3f02b6fef67b707425459b4faaa1d39. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/FRX201656258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1141b3cba93f5140323e0ae787641890f026dde2f439e9043a8d97b6c78dfc11. 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/FRX201656261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05435e74b6427f6e93c39a529b6ff321ae3921145f9dae646e9bddc317bdf9e1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX201656265.