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 0x8e5674bb8ab1ce8192823a42ee75b9c81d62196a67d939f66842de797a9b0f74. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f868553b-41b7-4673-9c2a-ba1fba3c540e.json and https://artists.proofprofile.net/proofs/artist/f868553b-41b7-4673-9c2a-ba1fba3c540e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Serenata Vallenata Con Mariachi: Ranchenatos
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 0x6fd843500771aba28dcf8f421a4ddd7422bc44e8cfc5a202497c43e0addad7ee. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/COF019901951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc678184449a1d37f6ebc9c69fd00b0cf80cd41fd8d1902f61504687c55bc3c1f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/COF019901952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ada391273e46f04c553de67853b32204a1d81f82a387f38bfb2db8af0fd636. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/COF019901954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d034be1a257bcf1dff630e0051233c493c7664ee69146b6c521ed6c1e89d8a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/COF019901955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd797718f19c43c9aee6918b5d3cde1205c8f2fa54e4f0fee67f7254381921cce. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/COF019901956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3649f8deac14099629da3490fa11c446d8c5157ebaa743b7e6df87f5cb4f889. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/COF019901957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec13f0c930003fa5f38abbb4822c08d48b66092bd7839c250a27eafcc5d368f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:45:01Z), 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/COF019901958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c6df60527f92e6c66f43fec424086946197c11a14697ef393bd6256b3a31a2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/COF019901959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd333eb5b0559670d29444c17f87bc4b51b0d59c16c46611110a2ff2d0baefe02. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/COF019901960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec619e07bc5cd0a0849df721c53092440c9ae7d4a19d23c4a507aee13e343c84. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/COF019901961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d37dee91bc279f9f86d2877d13c2ad66f18c5b2895e97d371122bab15f3ac1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:44:08Z), 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/COF019901962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098b05bb027036668d92ca8d0de7363cfb85a9d304798b194936db8bea7277a5. 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/COF010601994.