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 0xe6dc3050376b41e66ff27b55f4d1405744fe202197528838d51dcfa862d1284c. 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/49bc913f-6f78-4789-b4dc-2a66c7ded399.json and https://artists.proofprofile.net/proofs/artist/49bc913f-6f78-4789-b4dc-2a66c7ded399.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 0x385febe1c4d23382b9117c3ffe6e5abe02aa0bb9883150479ccb7d080426a14d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZES71918880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc334c3d6bdc464d59225de08c258675145b5a23d866a80d87e5f6b648d2061cf. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ROROT1936101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6381e417e1137f3736dfaeb66b5b97bf24746b073d987968bcd84644636dd7. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GBRKQ2036384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ba6ee0cab0bf391fd3acb9e341984f6619447d9f128119f48ab0106ebf7c59. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USLZJ2166698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fe547fdaca02356b4f45b113b189d4d6a01251bf59b9ef622768f9a407a538. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBRKQ2181260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90961c684bdf8150ab2ea49b1ca019da2a47fa7a1a3ad7c2b8d6407984b55e47. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:59:03Z), 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/QZTRX2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55f51845307e67229ea69bc8d9858a5e1fb1020b6b2be75a5420a8ba8cf6aa5. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:49Z), 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/USLZJ2286760.
Believe In Yangana (Original Arabic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f00503927a686b2b527c06cd38dc32b830be1367a3ddfa7d424152bab497444. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZWDD2290675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91f6466e1da15dc084219af7c2511e5b93b213db37d1989841eaf2b4505d0ce. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZWDE2248589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b5e7c7b9c9b0db90268f917d2929d5878bcb40a6a613a6641b0813819b99ea. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/US83Z2303691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0efb22831f291d68a4111479e4e8eda84b5c5a882733c617c8ed4f64ba1571. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:22Z), 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/USLZJ2327438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9218106b94f6720ce424382c0c27d6373a4a2f4bfd77605d2fea7f5b41c23ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWV32386086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdff0ce6b4ba552dd9aac3cbb188d117bea8ce8f3de59a45b616b2b56bd7f32. 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/QZWV32386093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa190e0eb6770467ac9f141c3eb16bb21b52a7a9b2ffe003a530d4022bad1f137. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZZ8B2395847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e067d7bf9d269a210461589475340f170348ac288af8904d3df77cdb377fa5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:44:43Z), 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/GBWUL2478315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a02d2ed22384b48647326eeca5de6fd35793b45229489cabb64b3c8257efc8. 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/GBKQU2455708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0131279bf19acecc6749afebf94a53e5a6825ddfaf7be3fbd3395fcbec5af395. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBLV62412618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7537951ea2ae70698c5e7d983aa50e717661f458024888e0e8b307e77bf27a54. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWV32534330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b5e7c7b9c9b0db90268f917d2929d5878bcb40a6a613a6641b0813819b99ea. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:30:40Z), 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/US83Z2303691.