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 0x04ea3443a8952b4e645e1f1ae6645fcb94a0a1112179b2f9122d309a02a3e68e. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0099bee2-3fc3-465a-8d06-346df58c62c3.json and https://artists.proofprofile.net/proofs/artist/0099bee2-3fc3-465a-8d06-346df58c62c3.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 0x945c44af22d4ff7ff1bffe5482cf3325ba18a4118cdea08ec3e173e97ec24af7. 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/QZNJX2301629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f08fbbdd630992a1850f5ca2e2420b55ee2b086ebaf39e45b876de5b513f219. 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/QZNJX2301631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037a965587cf7dc473957a28172464f2c010962e4fafda4ded7b4563ee07e0d9. 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/QZNJX2301632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d1764c26ccbe4e9e8fb575b6da6af2d7d2cacf7dac1c1b5d99e90897e31cd6. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZNJX2301633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ae7cfd6ba86087f10a2ea035c78bc87f19c4167c24a65b6bcaa1ffc4c5af0b. 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/QZNJX2301634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84b5312f6fb5aa2a58e7f34bb6d0b083a79f7767f098ca37ad20a9989b7310b. 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/QZNJX2301635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedf7c95b263fdb457e5e40dfb85648393c15b6249a0564a04dbe3b47f6256fc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BXIED2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ce5095f17cf5bd19823021772edcd1b645df92074d20d6bf66ece20f380d20. 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/DEH742422602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf47450ff288b6ea9378d0197bf1aeb14d2183f167dcb6b734b41e41f95c173. 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/QZGLM2471602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba72ea0ce627410d26cff00c8c346981fb12f61a3333b6b3922364c7fbdb108. 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/US7VG2481609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15e968ef32c3a0c8f3cd185e6818b648d3046b2d00a37b7c44851013a7cca95. 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/QZTPX2302067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc877fead6e68f6e9b3f3bf0d84c7f74ea01f48a8a8f96e718a0ebc4feb64e786. 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/QZNJX2431584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb135ef4d28282caae3f5374928648a46c19a2395389e2d730f856c51e2a66808. 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/QZNJX2431585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8305dc7d78b1535446626cdfea2d94a0b8c72dc0ccdd5ba1dd4ca484df711b0. 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/QZNJX2431586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4914e9c90d24db7e9be6bb3f469210998d11e3f2afd2237cda6a291afbd9a463. 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/QZNJX2431587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69bfc50aa2d0c21e3fe0a1af41c2c2081db5f96f2458f3642ad9ce7eb2c41c6. 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/QZNJX2431588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72899a39e3eff90858a9b7ada7ede56bc2449edaf95fb9981df32cab32e39da. 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/QZNJX2431590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37274cd1382ec4797386cc7074433278764c4d2d58189041f1ace4e52a35958. 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/QZNJX2431592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb291bc53c182fe5d7c0b2d39df32580f14968ea9c24085c6fb88a2fecf33f24c. 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/QZNJX2431593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf7ca1c3a30086ee1fecd3bfa47df3a7eaa50f1178c30778940445b6c4cc1cd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXIED2400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedf7c95b263fdb457e5e40dfb85648393c15b6249a0564a04dbe3b47f6256fc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXIED2400092.