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 0xa5c92ad49a61706a78be4afc644662e40101a22a62d36dc441c4d36ef0a62e2e. 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/395d236a-fbf9-43ad-9a49-47e7f03d7fa1.json and https://artists.proofprofile.net/proofs/artist/395d236a-fbf9-43ad-9a49-47e7f03d7fa1.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 0x99b46a736997b8a9187271c0eedd72daedd0b4db5236b125b5362123fbf265eb. 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/GXFHP2470675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b5a7e9ac9bb90ebe40fa4140c0e4b65e9ffc3aa6ee813ed7757dec23017440. 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/GXF972436219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e230693d24c183e5e801609a3c2e5c75fa5cff2f7f56b8667a7b67d8d2474. 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/GXFHP2427116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb9915ead599ebc12155e7cae48a068e3a3f174e44356efca0e644be09dcd4e. 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/GXFHP2410897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39882faf9742ff166101db957ad416ecd965805b3c731beb9614ea218f9aeda1. 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/GXF972423446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf603dba3b74b1ae41cb7fa87885963fbb7bf9499c73de65fd458eb29ec38f9ad. 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/GXFHP2499738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e3672fb24ccf9cac8c94e4dd077f5ceb4bebefd1401ad5add7c02284753bad. 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/GXFHP2401681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88db5b97171e8604e5d6d70011f643a123511511f180b12cf7cc35668eaa6fb0. 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/GXFHP2488168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2554b57ca5ae6627a35907de0a60705d31abb9ee8fa1b673e44a56302348707. 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/GXF972411834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db288ebf5968cadd9fe977e6ee368d15ffb3656b8a6eb6ee5cdd506e4bff0f7. 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/GXFHP2421896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b8ece81162c8d82a65891deb35bd1fe048f07878d2ce65588331db710b0b2e. 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/GXF972422881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e6390f0e02792eefaa1f3f7039a5298f4a87e657cf8e383c80558f733a2c53. 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/GXFHP2414810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1fdc632fee9d43ffe6fa1d336aadde00b2b004768fd9788f834a23198691ae. 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/GXF972423972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c319da92d1f8ceec29453f107b50fe586e8d42e7cfe3514cac3879e39cc3a57. 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/GXFHP2422952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955f8bea1895cf04ec63530d9b7cd6c14acded64e6a39e44498e028c8335871b. 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/GXF972401871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f57ad39dfcc14a26d5043483dd1cef472b232d956d48251db008fa2e5fbbd15. 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/GXF972443038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565f8fddfdef851ff34840a8179b8b76aa8d69fae822c445d8520ed04c62e8d4. 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/GXF972455950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcd933e6584db0774c3f7569dcc2609fbb584df7563b6020e8175fd5a939590. 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/GXF972401475.