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 0x080769aee072c4865e148d2d934242f85067ee6a17484a4f424ac716e8f60caf. 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/65dba5a5-954b-4fe4-9847-ef0e5a234c5c.json and https://artists.proofprofile.net/proofs/artist/65dba5a5-954b-4fe4-9847-ef0e5a234c5c.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 0xc5c594f31464ac7b410747cdfe753ec317fe7cef8dc4f5f09f1b56dbe76bc37a. 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/AUFF00500292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e987d5c3b4cf1742a6b7b9d87247c5e66009d1d92603b73ac489e84b471d6e. 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/USNRS1332192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6a39ed2554bdc1bb11edd37602dc7eebb835c41389b8ceaa877e09dd5aa1e2. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/AUNV01500284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6a39ed2554bdc1bb11edd37602dc7eebb835c41389b8ceaa877e09dd5aa1e2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/AUNV01500284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd4a681ac5e81d0017a7da67b92048b91b1b89acce9454c7ee3895650618123. 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/AUNV01500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b523cb35fc07ffd1824c5efb217b5e6d3a4a48cbfb30f5230b127b0ae1b7f2. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/AUNV01500390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd4a681ac5e81d0017a7da67b92048b91b1b89acce9454c7ee3895650618123. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUNV01500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea191bb7639eca678ba077865336749735213c20e8f72c0eba4d8c3adff0924. 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/AUNV01600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686e6a4bdc017edf10fd3787476b85cb24f61d0505996a2f699284aa67ab0128. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AUNV01600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd521dec14f286d5f167e92afc260bd481ad45a0bb1706ab1c74ed0b1caed50. 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/AUNV01600931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd521dec14f286d5f167e92afc260bd481ad45a0bb1706ab1c74ed0b1caed50. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/AUNV01600931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ae2f500c040fcedde7ecade077eec265d54bb2e296270b0139b17b1b5c65f0. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/AUNV01700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ded392abb4a684308113816924ac12920916dd7b3476bd8f80a48bcebc961c2. 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/AUNV01700152.
Heard it On The Radio (Waveshaper Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0440c4a209b572762ce09a6a2a97cd56a884ec1a522bdfffbf63646271879d. 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/AUBEC2090091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19433c9dce560d26ca0507763d80eb832593b106e2c847dba44407cee68525a6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUBEC2090278.
Off White Limousine - Luke Million Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bc741e6d1bca87d3b42e5a08e49efa914efa1ee2450f7f1347373fab9b5eaf. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/AUDJ01801729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667e59cceeff0489d2937c7c8bd33b4d666c503f3231fdc6a963d7aed8f22564. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/DEGL62100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf931006c4ce172ff3baed707e3049f00489a624d3764c26fa928b722cd036d. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GB8UU2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6a39ed2554bdc1bb11edd37602dc7eebb835c41389b8ceaa877e09dd5aa1e2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/AUNV01500284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338706dd4595d9164df5a04be41dd97c48cac07240e6b68fb74e74652881672e. 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/USNRS1332478.