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 0x25fa870acb0e1840196ebd63d59b83ea01de787601d0e4dfec8d682d6af927d4. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c838e88-a884-4732-9cb1-4dcfcce6d897.json and https://artists.proofprofile.net/proofs/artist/3c838e88-a884-4732-9cb1-4dcfcce6d897.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 0x0e02e0632ec04bdcdf689fc2045514df17aeef4e6a7935b1e51820a1a1bde948. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AUBEC2353313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2eba72264b80ca1a0d1e5aa47e178f4b53563365b73e5b2b02023b7b5013334. 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/AUBEC2353312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e8b39e7b752c3698d32465b68fd1ce83d8ec4bedcca28b6c3b0cb99807c250. 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/AUBEC2353317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ae915e6b40a9c7ec133b2cdb6ba50343835e4e0ea286f9bd07f70d878f4585. 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/AUBEC2353311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4993ca8312501320ccc2da543ff7706f402878f0b73b50be0a00abc05993b08. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/AUBEC2353314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2071d83275e8092a9bbeebcb5aa64a5bb5cc7dfa1f054bdfb30f0a9856e243. 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/AUBEC2353315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc66a80a0752e396803660e0a48552e304dc9ab7fbb3e0c5e34ca6cf21834c0. 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/AUBEC2353590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953455ec025e3bc347e708a173a444b39082f87c5805f02b2ffee919ccc99451. 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/AUBEC2353591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575b271cfc88ab6ec00ffee73ffb90c6ceb287737673065dbc5a35e99bbb1121. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/AUBEC2353589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5485f7f6a91c145f79c2d05944cf31ce37730599924ccaf6827ce3b6ecd9b9df. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/AUBEC2353802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9050f9e9072c17ef01c0131c4a318e67ac39b004d41b79a97ed937e764897b0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUBEC2353803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef16f988564d6a598ef03534677ee5d690b7a793e09ec1a78ee46d11f4abbba4. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/AUBEC2353804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299e452dbb5cf99e37921234511b190741fc300534c557ae55c25ad23f218da5. 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/AUBEC2353971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb8f2637cc760f2b589eb01ad99e4456b6ade3136c05cfea7ff9deb52c51606. 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/AUBEC2353966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951efba5d5714d376756a37b25e707d708ab0d41076e216b6d6f33df8b904cfe. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/AUBEC2353970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafe23b5eff88405f65b33488e93b89ca3f4dfc6a89e0cccc44c725843d1dd82. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AUBEC2353968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d902d14d3ba2c1c6a4139e9df6191ddcbf8f1d81bc9785395db7b349005797. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/AUBEC2354186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac69691a9e14291ce140afd02b025edeca9f3b1e4d128d77b152f984c74c1063. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/AUBEC2353967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99ea381fdeab0d1ae591d909de29ef9aae3d51338c2b0c6aaa90dddc6e6423c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/AUBEC2353969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ffc6dfeb268bf95fca6ad29143b18f865ebeec0f48a27cd584b4ad8f381e89. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AUBEC2354189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff3841c8a695041774f340b773739d5ff10e81056a9a55be125ff60e94c35c1. 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/AUBEC2354187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2b89242381c88617d0ae3d34c7ac612533f56abfe5734d66f8565e9fe9d66c. 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/AUBEC2354188.