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 0x22018319c77b7c74530b3b843504d357b9f1b70bc02d826945ec0122a969224e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e163fcb1-f705-4acb-965f-36e912398988.json and https://artists.proofprofile.net/proofs/artist/e163fcb1-f705-4acb-965f-36e912398988.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 0x2a7af83783428d3574512f295ee8c2b6107f3f883ce407ccd92704c6660d5f8c. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/QMBZ91904371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8309245edb59cd433a9568a28235ac2ed6a7c681b1bc3fdf1a902a6f44118cb1. 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/QMBZ91904372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f9cb0d846ed0d13df9c9c2d783d430db60f9eb14804e2bde067fcf2eb68bdd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:05:39Z), 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/QMBZ91904379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf719066d78f2dff7583d5eb4dd50e991b3a013460b642ecec186d252fad2cb. 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/QMBZ91908105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a799acd524aadd48a90b1121fe4b4cf3fedfdd6431c279a8e9de1afff0e04b4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:36Z), 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/QMBZ91908106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59734a0714819cb8a4eafa43d6f1fa9350af7ff43ae4c6ae0aae6320d44b34af. 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/QMBZ91908107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bafd2c356f5e726d3d9aa8b6fcdf96aeda1ad24c08a65d5a1c9a54a9c93ff1e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMBZ91908108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02b3cf9790d44119ad9f83d451d227eb3dceae1067660af89cd28b0b3c08a12. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QMBZ91908109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130f7cc77ebd403c49b82745383c2ad0fe08825b94120535b3371dec3dd8192f. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QMBZ91908110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5141086ad0b935a0a5de45b1c2b0711d570b42959ece41da6cc38e60ba6f6951. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMBZ91908111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a025acb555c294941f2ad192a32f664259fc9930d14f98dc07f9d0f98699d98. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QMBZ91908867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa707d2558c9092bf0da31a96bee99ce8d9f64afc225ccb67060b7d78856085e4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMBZ91908870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425e6021ecde1e4d37de55737da9b0e02a32db1575dff4078acb79cb6ea102fd. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QMBZ91908873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15da8631960affaca5f3c7177eb410281bad2ff4486e86160928e9ab50364f9. 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/QMBZ91908874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc22e159e575d2af85e20197479f07d45c69a65cdba111e0068c70eecec004e3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:56:07Z), 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/QMBZ91908876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13df2af0f23522f7a3d51d4d9aa04e7d70220a5b03622f208b3b28e35a22b75a. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QMA5H0910643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7209283ab775cd17a2543e7f9bd1e63c22fc1daa2f1a8f827c726487edb6214. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:19:07Z), 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/US39K1995301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f054f14749a81dbcd31da7187d19ee60e8ab4c8b59f416f83e191a676231d5. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/US39K1995302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f84667f5cc7ec176f9dfd14038ecd36524c61807a3819be4675cf226c3b1b7. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/US39K1995303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68282d8acb17835e11312f825f4bee89d9ed564dccfc92043de260c64f4c681. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US39K1995304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b7299c8341ef6bf0dfd5f127f08d544f9195c91f54286d2e6b64efb158c66b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/US39K1995309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42def0cfe59b383721332c07149c3a756f0ec1c9d5da084b638e200f1c99f855. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:08:41Z), 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/US39K2407801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641c2f58b0027c1a156e5ce744dfbf1488cfe323a3b4584d7c7024b426e35fa2. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/US39K2407802.