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 0xb974160ddcb7b6b006f6dbf1f46f900c710e10892995acae18f96b1ff336a8c1. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/077ec5ad-2814-4c69-9e21-b2c491a97d06.json and https://artists.proofprofile.net/proofs/artist/077ec5ad-2814-4c69-9e21-b2c491a97d06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Lion King: Special Edition Original Soundtrack (Finnish Version)
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 0x6acaa5f526cf674d66ae3c20f982780cf627e4caacddb0bda3ba756d5d27b418. 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/USWD10524329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aaac5fe2ce042e30f376c084579079b93ce4eda6267c142b045170f8beec3f. 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/USWD10524330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e60ec8b68a66b1757f7fb2dbae83412d805aed5fcad3358586de4d06298afde. 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/USWD10524331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddabf23872cef5e70da5d8f3831a57fcf3e9288722b958f684420d5b5a08a9b8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWD10524332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dc782851bfacdd9d3deec7b4868d3eef26851d25463dccc7ce865ba0f1f1c3. 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/USWD10524333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235c8ade3987f6ad3c4d0392c7e6204a611e208bca62fa590dbac66b0b553ee4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USWD10524335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b0dfeaf89feb193159996c645b5283f0b346ba4a2747e12116cfc9f1dd9758. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USWD10220755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eefb6dd6def0d387b78ba51319facc3dbccf1d937e24f53154fc52941dbb5f2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USWD10220764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c003c1aad8ab6f546fb901853b1e3aa119bccdd3b7ed84a410d9902960c1bd4. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USWD10220765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d728a04b2f63bd7d1d89790524c33fb3690cd1c8b2e05ebc2b2de371039207. 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/USWD10220756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8742af4249facfd532e29a931fce7b9da59bc60e3de07a5c5439cfedc6ee291a. 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/USWD10220757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960626bdf242335fcb7221f3c27b297bb7942d64a74910471eda7ef15273fa82. 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/USWD10220758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088353ba66a3072b9d2269a2eec189625a40d1bcc09aea480eabddaf47ae0ab8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USWD10321343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43942539551077f7b13fb7d3561d622b10fe95f1dcdcd63a2422854a4db7cb6. 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/USWD10321489.