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 0x6b0c2315c17753af7ab4d85b53dd8359c18bcd904adf21ed9dcc3cc3735369e4. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d30291f-9177-4f11-beec-52c14eeb092d.json and https://artists.proofprofile.net/proofs/artist/6d30291f-9177-4f11-beec-52c14eeb092d.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 0x6ceeb8ea1e1f26f2cd12b77fe8777531be900875c00b7816f9ced347c86f42fc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUB731418432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f3058b04d3e99ad7e8a408d5da2802a77fbfbb882bdf83362dfdfaf4d6a403. 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/RUB731418403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189c6b222b62cede6e6e45d49032bd39a54a79e6bd44edce7855cd8bcb490049. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/RUB731418428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab278ac4111cb092c8c5fd237d6d0c8ba60830fd873d0d8122f3081e05d3dbb. 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/QMFMF1378330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18397895958a3faa2e86d7b32d51f60e22d70799a1b096ea99c59cfa8baa1af4. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/RUB731418424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5f5df3c219641efbebeece8a3b90a05c412cd350087201e54784a7115673a9. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:46Z), 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/RUAGV2502560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6649b0d9afb7116b341f046676e836b0d372c265b20859e1103b7a5f49ce3cf0. 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/RUAGV2503191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334757af92edea06ec5e0df738790dba49b0b80a2e61f4fbeea4601b47787a6b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUAGV2503192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86ec5eaf26d6e9ee9c2a6644128f96cc2e9efaddded233b537e66644f5d4c9e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUAGV2503193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3154aa4c637ac641b5350d9f1ab777f43e70f9e67defe09ea4b7c3544a81b083. 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/RUAGV2503194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba54805ca91f2b9b18d14a5dcb04dfb9db9aade78e9657f0f0f46b677121e028. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/RUAGV2503195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8ac4480199c6553bb6e5d312b621f5e187fec35110df5f6aee8586efa04458. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/RUAGV2503196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4518eabdeb9ef57dd6d0ac89ce5892024dd2751ee0f5ea5ae255c175e3f6bc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:25:57Z), 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/RUAGV2503197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9d105815953caadd48558b4e50857388e01e13b22b1a2ec381acc43ada5888. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:27:26Z), 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/RUAGV2503198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3c2649ff1e9b8a32d9c351ee8c85d6a411c67ba84c7d877c7c377fcb6c2751. 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/RUAGV2503199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5f5df3c219641efbebeece8a3b90a05c412cd350087201e54784a7115673a9. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/RUAGV2502560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9829a998fe3d57c5640057b579bd489dafa262e8d730177f004b0509d971109. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:38:47Z), 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/RUAGV2503201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef2928d946cd8a1115c7ff927b901843be6df28cf21b04a5e427d638a0b61a9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUAGV2503202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c384f70ea007efd55ad160f2e593bcb424886bfa9514b54eb50d4e8d0fac06. 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/RUAGV2503203.