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 0x8956e40313ab0db10157340b01ff5fd14d3ac12f84b4749aa1b0edcf6b81bb3a. 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/ffabd5a4-b84b-43e8-8005-f4a214ad86f0.json and https://artists.proofprofile.net/proofs/artist/ffabd5a4-b84b-43e8-8005-f4a214ad86f0.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 0xac819fd406fc8f255b0d642aec2e52ca50248155f52ded55c8cae3c9cac65ca4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMJG1614818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32744ffc602cace1f917b0b3031f54ab5c639eaede7ed6b386fe5085d26a87bf. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBMJG1614824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16556b828d6edf054b45e7936ffff13ae2ce99f4cec049de78607dfb605600ce. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBMJG1608329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4163e7bd61f3fc0bcc41e71eea42076622bc4235132343fa039336e75d21c3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBMJG1608331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156ec1b854bfde405800e12aeb5f2a0a31d7535d06531729ad0319650540bc02. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/GBMJG1608334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f7a99cd596fa2f21f64df36e1e6b31b9be989de189643f9f0f2e3ae9447a8e. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBMJG1608336.
Anoche vino el diablo a hablarme de Dios
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5e44572bb1f61c5f6e1a312dfe0ec6fb652bda48ca91a2ba40a8a94bbba544. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBMJG1609831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7819d92baa8a859e12e1b786549312f17b62adf02f4b4f153d3d4309213cca77. 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/GBMJG1609834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5e44572bb1f61c5f6e1a312dfe0ec6fb652bda48ca91a2ba40a8a94bbba544. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBMJG1609831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7819d92baa8a859e12e1b786549312f17b62adf02f4b4f153d3d4309213cca77. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBMJG1609834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72763505924f318982a8611ebfb48c61e80c7c0a00b96ebe3cf1a89f0d37b45b. 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/GBMJG1608342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72763505924f318982a8611ebfb48c61e80c7c0a00b96ebe3cf1a89f0d37b45b. 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/GBMJG1608342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17151a638a9cbd6698cf4d4a147412658ffff7933c6caa63ec0fed8283e720d7. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/GBRKQ2257347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04628cc17e7382487bd6628a3f1fa6a804574c86cb20ff57aefd61a3bacd658e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBWUL2272315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17151a638a9cbd6698cf4d4a147412658ffff7933c6caa63ec0fed8283e720d7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GBRKQ2257347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04628cc17e7382487bd6628a3f1fa6a804574c86cb20ff57aefd61a3bacd658e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBWUL2272315.