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 0x481c5d2e9fa9fbc19b40967f5d4465dbdc4ffd1916a557e91544728122233183. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0cd6a60-73c4-4617-af36-414463833fe1.json and https://artists.proofprofile.net/proofs/artist/c0cd6a60-73c4-4617-af36-414463833fe1.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 0x1f091f03f8c245c6928964074d04e31d1db29e7c03de8612f54e60575d429a30. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ESA012511357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acae9914b040b1d18d67ba8dfe1623b77098105db3c2baeb60828918f741dcd. 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/QZNW72302120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363bbf1b15c294e8673efd18b20bfe996d81810289cfd70649588c44bfebf9b2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZXLZ2342563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f255641ac42365db417c439c6fcc555b5ed89e294378e87e921266828cde37. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZXLZ2342566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6ef00f22d221f2004b3d1f9481b69d86c1ef730d33a22e8c33bca892f0da9c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZXLZ2342567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab344a7dc510e9c2cb531611b7cc7e0fd625ef94847dd8fdd22ae42099ceabba. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZXLZ2342569.
Baraai Duśman Ayacan - Qalandarći Hareep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b2cc8ff428d2cd0b36af120c2c1f64e8528bed636caf47acd39a7539636189. 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/ESA122404873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd8f85356f2d3df83cf622532ca6c362afe0e3c5d301519ba4bd4f64b62e9e1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ESA122404874.
Thanum Khawar Chish - Mehboob Ali Khaney Dhani
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0b598df8ede914c1b5d5cd3f745a4f410ccdd1f7a479c9cd0d3fceed991b3d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA122404877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc684d3ccd9ccec9052e85cfc7f8dbcc1881c950afbc2b3486a8c7b3404e72521. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/ESA122404878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadbcb358020ff4abf4b202c426b1c9330de813e2debe850d9d7de41ea6271fb. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/GBMA22586260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6c092f6f62a618217664136e4f06fec0c11ffb99460bc151b5e769b1fe91fd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GBMA22586262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6390222e3e1b091326d183c8211c14fef71fe94a6774c30e3fd11bdbe465048e. 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/GBMA22586263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d17f68424b395cce66cde71c38ca64a7171f6665727ee397bf5fece7b143734. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBMA22586264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7b409307878323f286693ed0cd93fefd67088d364e4f1e3ca1fe29f16a1205. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMA22586265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb550b42d39c3529a5a87d08427d6ad9f1302124a68a9159212abea73c654fd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBMA22586266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b94b4ccef454b92b44e81862b973e84f111f1f026ac2a0995e5fe9f7bbab27. 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/GBMA22586267.