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 0x13c4607d93b74dfcc14c141537373cab82e8a7e898a91c69a83831ef3f0e336d. 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/67319e23-3042-40cf-8935-8983358f7642.json and https://artists.proofprofile.net/proofs/artist/67319e23-3042-40cf-8935-8983358f7642.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 0x8abb2d9ebf89fe4819539d6fb8b56b9292d1a5f4efa4d7bac2b7c34d5e559b5e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:20:58Z), 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/SEYOK1651315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9459ace6ca8a76d7658c7c00d4571245de8ebf873ff7dfb31e29a69693954898. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:23:51Z), 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/USJZA1826501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803e702218f3ae4d62abe1fe8ed5b273ddfbda3db7ba1deebc81a9759d064630. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USJZA1826503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279719206af5dc5b15b2186b8b51ca9889a9f426a31fee59bd7a8c27e2395a1e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:12:23Z), 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/USJZA1826504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd410a6c299c31191d405dfcf3cfed12bf1f2cc7d917d75c874f4c7d8b39ce096. 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/USJZA1826506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ddd1ccb3f2bb729fe4f2f3810057131a1b5eae85c8695f68c097f9df6b9ce2. 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/USJZA2136803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712913a721ac81741e53d809523bff7267c7f164082f7ad53b4a5e5a75b11910. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USJZA2136801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb18d1493b7a52c11c5823cc67c87f0fa74b58f8b01489ea9bf3371b22a6f12. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USJZA2136802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ddd1ccb3f2bb729fe4f2f3810057131a1b5eae85c8695f68c097f9df6b9ce2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USJZA2136803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651a93a93f1b50cd4124e63f47a99cdd2b6620f847eabb10b48197a0bd5ca98a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USJZA2136805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47e93a4cf8f1d63468f49a2758e04ec95833862f186190a7d4e0f41bcc57300. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USJZA2136806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c4e2fa4be63459683b96a8134f9b0d7991bb71e1c37d5a1dd95ea696d283d7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USJZA2136807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3aafe113f6de3754ed4e5ca130a3618ff14b7491f1f3dd44595d4c58458168. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USJZA2136808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e37a3f8df6d53efd391b4a64c2ede8f6598195ccf614b64476371a801bfdf2b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USJZA2136811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bdf45fbdbbe02495f5e62ddf30ebebd5b37e800b0e5e3bbedc443ec599282b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:03Z), 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/QZTAW2378563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6be971856679514370af94c98d6310007ed503bd191a2fac55c5b55c5ef6013. 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/QZES52457056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ecb73fd1f59662ad8decbb38ea6f3bf518785a93acb89a3535ab70e5851bfe. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:14:41Z), 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/QZES52457779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563b9d63ff66ff5ab3730a5aaf664bcc649e28c6ca88c164b2c19dc13e769425. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA2B2511391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697fc1e5ac2e4ebffcb60952d597796472f5aca3c73ab3385fdbbe9e44d201a2. 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/USA2B2511395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2131797afa73ef9a8413ca38fce6979d6a9debd512d5ad050f048628ae21812. 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/USA2B2511393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563b9d63ff66ff5ab3730a5aaf664bcc649e28c6ca88c164b2c19dc13e769425. 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/USA2B2511391.