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 0x362a11a64234a24ea809cc24ac1327f6190679c2d35574ad987da850a0319939. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2510e3c1-eb5d-49f3-a2f3-30adb23edd1d.json and https://artists.proofprofile.net/proofs/artist/2510e3c1-eb5d-49f3-a2f3-30adb23edd1d.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 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 0x7c047db027604e9a3b6248b23cc308293688d11870c678e238c91bb2c58cd48d. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/GBMJG2429633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57ec8492a1b4360de65b6521976c6eb92847b7841f3037d9ecce92dd4f39d8f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ESA092412592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f01a5431d9beee113db42d9a59b85fa20f34f4ce57c7088398d4a4a72cb928. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ESA092412593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c0a38f6014215661728480ef816d2c8e24ffd290864433fd69bca18a186098. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/ESA092412594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e20c6dbafcf6e35a8801f1f9b61fa923e64d36472a6912bca61015c739ef46. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ESA092412595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a91c83852da56c57c29490b5176fc5ad815f4f365cc7e60ed4effb1e344a5a7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/ESA092412596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26361e084d913b822dc7a0c37a9630eeec0ec44563a8181dbc17de9512a9100. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ESA092412597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28c4491e1088549a2a01f3180846b99e59b2e5af01af1bfeb03753846df9582. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ESA092412598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcc5bb61a4d7fd9ad9fcb10f651eb83580b68ac8b02dc161ed1caa4194d1ded. 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/ESA092412599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87032340f73785f17dcb0eea51447347a8781687ae46ae5999d995960998c695. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ESA092412600.
Waves of Tranquility (Slowed and Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649275b8dd0eb3b26737cc5d376510c55b9caf5a40e78cb9c44c00193589552a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBMJG2432147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e9276c6defc5af3ffcc1dad585ebfcfa8fb822ea3e01a11c67458c3dd35d67. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMJG2432144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72a62bbf83ef79208f920cda35e4fb4ac597ce744b7099027437018c9c785b2. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GBMJG2432127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc1c73210ab4426a472efdbb6d6482681ffbfb8cfd5e8bf449f790c19910f10. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBMJG2432128.
Breathe in the Night (Slowed and Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515f1c8d98bf936ff2adc736242066a6f1ece9a79d454f0cf433cc6df9dea433. 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/GBMJG2432387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc476ce23987d5a14c37ae2b43c8e0f39adf2beea560c30b0579e0acb5a55e5. 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/GBMJG2433675.