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 0x35aed6d8ab772c4b5e6789ed60593ab09767482533c34466c64ccd23c2c0667f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/751eae2a-8f70-49fc-bda5-ae9acea90b9f.json and https://artists.proofprofile.net/proofs/artist/751eae2a-8f70-49fc-bda5-ae9acea90b9f.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 0xe260a58786b8a51de7e2cc3040b6534b60a93ae3dfb64865d64240df295ace0e. 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/SGUM72301612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadb5c4b959cbacdc6deeab866e203a4d4925a7ae00288346a7b0ce8d27e9ef0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA0M1913568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7901cc8d53e0eafa1eb744fce9b15cbeea7199fdcd769c1718d9764015bf6d43. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SGUM72301276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89be57b0ed7abe154a03f93acb90d6e9ac67297000091c5dbdd93b823c366ad1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SGUM72301616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a141215764c71eb684091887695f4099c8136c7f290e3bf98c5adc4139551d9. 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/SGUM72301618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e74e7826c99562c79b94c938939b571f47c08b849a196b91175b750df04d94. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/SGUM72301601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277f5ce3a8c2b75b73c2f0114e85f5d98dd57ad53015abb58a514509183b09ca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA0M1937051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df634a57812c549bebf9739b2a7574a5cc8d52314f072f605b3bb4ed1c4f8c3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0M1937603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa37469cea04d2a8c65e1815990ae10ac4dff024bd5fe5eeaf243e175bcd8ee3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/VNA0M1935644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadb5c4b959cbacdc6deeab866e203a4d4925a7ae00288346a7b0ce8d27e9ef0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/VNA0M1913568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7901cc8d53e0eafa1eb744fce9b15cbeea7199fdcd769c1718d9764015bf6d43. 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/SGUM72301276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094c22672078eba9ec961762745844febaf6991c498b4607e72ddcafc5cba111. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZN882289464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ca158e87f4266e382a777e8eab444e5856510dcbfa8789a5aff67430573eba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZN882289465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839dea5357e43c521da339da6decf7dbf24d7cd093fcde51770b0dc54a9a2a9b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZN882289479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e08c51c5387f72427f23b8f862ce28b9367d4dc6604d3213d554ad3da6c409. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZN882260405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82839fdaa4cc37fa37caa18b4a700ba5cf4ba9ae64e9de17297517f4cf127a46. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2251136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a1e16b2247f4549e262e8bbdbf20dc7eea007c55bdf4233c60980193ac77ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0M1924336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbc76eccbb2db448ee2b4f13d944f1d87f340248d5be0f5ee5572ebcb2c6340. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0M1915923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5082f6438b3884ae3d0af7233c3bec94b1425b289fc6f24a4a795a07e6ab37eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0M1914494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48be891447cfc7fa475704079c00739a41401bf2e19c9f3f6393590c31be5a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA072150605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7024b9913fd5617b903b164e521add7cccc79fabcf4912ff19bb78cbf2c0c6d9. 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/FR10S2130486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa81efaead4d00b9ef4074b4b303689b828169e7c6aa792bef5e1695a948874. 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/FRX202233100.