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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfe9f2179e5e1aa4f08b92e429dd7ca04e96da4405cd2aad8b6f00bd57d38b3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9bf4230-455e-4eac-8877-601b9f63604a.json and https://artists.proofprofile.net/proofs/artist/c9bf4230-455e-4eac-8877-601b9f63604a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f61d685ddd2c83d0822cee5c8059cae13904646c21e9e80e1736627f8e9304. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:31:19Z), 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/IDA191402437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f143b31d3919bc3f5828889d8a6f083bc94fa8a94064a2d9cd02edbf4440010. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/IDA191302246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99671a91436080eca7bbae03fb8cc7427d66e3c37b716e1450744bcf99708c7e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IDA191302247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56a625ae388b6d0326c6a711cebf965904222d0e9c9a4ba3aa2a9fc06f3bd64. 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/IDA191302244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361c7448c4f1c71d09daebe318960468120c05dbd1ff8404cd1339976c14ab44. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/IDA191502963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a07b6af18ca608e53cd0f88d4c58b709abcd171c985ffa50f0b926acbfbc99f. 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/IDA191803294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5638eeaf1f91991fb5d06d113078538faa0a8e96427567dbb056c86c59e2f16b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:47Z), 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/IDA192403889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5792f6c2bfb0e02543d58020dc30b02f268aabee2da1bd67e8737ec83f06c26. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/IDA192303841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0652772f95669485e539a4ce5240f84b4d21f390f8fc86539a4409a41636c6d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:06:20Z), 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/IDA192003556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7558dfff5311291639fa30a76502359efe8acb882b6703062d805165685343. 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/IDA192403917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd6889bc40bc8a8457e2e863c48b60f84d599067ff8dda73987aa3fb2b9267f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/IDA192503943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b6b0c6dbc57a36461d0e415834eafc7caae1fe9b49bc6bfdb04dd395c972b3. 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/IDA191703154.