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 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 0x4fd03a2c6c5f4fc282bed8c06d61b0cf3c8cf1c01587bbd3d0ed532df3a59ea6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33ca737e-16cb-4ee9-ae9b-957e843e4b22.json and https://artists.proofprofile.net/proofs/artist/33ca737e-16cb-4ee9-ae9b-957e843e4b22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE MOUSE AND THE MASK (METALFACE EDITION)
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 0x3014eb97c3d7d2e263b46b2d4d15beec511e4def57166070f1794996716411a8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e801e07ed1119e93705bf4b5409a32359ca2fc6ec45a7886b21ac4f3cfe2db. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f612edb149ea8c487265a3604c11fe949d3ceecf337833409ceba2f749c619. 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/GBBPW0500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b92cade2ee9837163786c0dbe54fc01bd4ed233b459b59bff98d4fb388b0ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf00a358f51a0b84f4069920f1728ddf5cfc3f189de186d5a7550a632861958. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c90f35645aa057e08376bdc715b7218cd60872cac7ed2d4e6419521b74da227. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43b4554858001fb67c9c8eb6e7a7696b6eb7376fc6fe885925887720db09263. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c06dd2f135e8da99707ef5099e1d072211ad51e21d7c67450ad44f53addd8e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582d87708d7fda60f28f30776acd47f55b2092eedb496c9908558d8b3e3ae9b5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03df56ac7d81aedfcefd6a4adf2273dddef44a485547026a1d30236d9d78805. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428d76b0e4c42762043bd30dd1fe5646e14f4b2ab844fb88ef1c77c129baa66b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b02df703ab45c709b9711656ece32240db01d2028f80de3f2fa55fdfeb974c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5327df5ee46def40145bb5c7a5c3e64bbb64601be29517d8123ee86d7e31d918. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71308605c7dc8e151d73aef5f65acf113dd6862a24adfde8031f4471aa0c11d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0500126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7110e532efe351414a3eadaa89773ae35fe1e1794ff5d80c73708aaf894dfa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMYF0600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b51c89d0fdbf452316b368d4f090c1887d89e2a1826c2031fd60e784d2dc89. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMYF0600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9270e5d1a539023caf5c59ce624a16805cfaf568952621b74dce2cba4ab0271. 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/GBMYF0600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b51c89d0fdbf452316b368d4f090c1887d89e2a1826c2031fd60e784d2dc89. 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/GBMYF0600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7110e532efe351414a3eadaa89773ae35fe1e1794ff5d80c73708aaf894dfa. 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/GBMYF0600015.
The Mouse & The Mask (Metalface Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa381f542d3b2c747967c7f29e2c1fdfef7424e9ebbaad15b77b03793ccca85a0. 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/USEP40513111.