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 0x1600810c92a8171581997cae886aa4b6babbce5e54853d77464f1726f5c1e236. Chain 2 (Bitcoin): anchored in block 953991 (2026-06-16T18:47:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f864a63-e1af-4f4a-b76e-e3366e5f092a.json and https://artists.proofprofile.net/proofs/artist/2f864a63-e1af-4f4a-b76e-e3366e5f092a.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 0x94bc7aa342997b432b447c383bffe73f393a884fcd774843f80a0c2dcf8f1eca. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBMJG2425535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e62b13e5ae8307bb69f08200392d9887f2ef9f10dfd674d6b1ceab77bfe672. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBMJG2425536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e47a53caa442b193d522c2d6ba812a833ea38c5baa3a5d41cf5d7173a228be. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBMJG2425537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d6e529d5504f80ff84868a65174f5b1ce2cab4ae986d7ca8a8566bc0f7d748. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBMJG2425538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802c18fa178b06f7e38ff6d53f8f9b70661bb88af5010ab0362cc981c9976914. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBMJG2425539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97132391032a38cb3ef56103eae2ff32c8b755dea13d961c4669cfce6c9854c6. 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/GBMJG2425540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc4a632052ad17c9a6ee566bc909fba354081e872afdab0c64fab2c99b158ef. 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/GBMJG2425541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b68d3996b5e6f6d64516cd04879c8bfc78c2428f8447731d5583e1f397ad11b. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBMJG2425542.
Giani Amolak Singh Ji 20th Barsi Smagam 2024 (KF125)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1e6ef32cbc4d628dae9468522bb57fb62069da6f8056f31b7709021d712c30. 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/GBMJG2434894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1740627f07b7e1ad41a670f4f521907ab04502af52feeeb2edf804b04bd542bd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBMJG2434895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d33fc15d17f6e2d391300dd68628a120bcb57e3f0040c78b09cae0a154fdf5f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBMJG2434896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d55abf8cc2d60f5a8774aee40e7dc1d511e62fb5aadeba6367739344894ed5. 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/GBMJG2434897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b42dfbd4c4d0dbfb8d9debf812caf48c39a21e0e53b0d13d1f0f676f42a0c88. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBMJG2434898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf8765bb58c27c96bf563e6607569f05d971e7ee274a23f8a22620b11bd4a7a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBMJG2434899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383e876e198b4ebbcf419b565cfda36b54cc2377be534178b77ce9c0dceda424. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBMJG2434902.