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 0x243e8a2a2b58c2f7e47af4fec5e0ad35803c4cbc883e83f42e30da98ddd46188. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df7a8cf3-7de9-427d-aad0-7b72c8081131.json and https://artists.proofprofile.net/proofs/artist/df7a8cf3-7de9-427d-aad0-7b72c8081131.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 0xce350cc260798cc7ae93bab9a2c11a0c185236c7b206a69bdc53df901d23645d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USDY42165872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c78678942904be5f505390a680357b760ad8f43c6473ccb6a996a51043cacf5. 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/USHM22114480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdccb29d2cca8f24145df2674cfae8bdf344c82e054463881ec5f84057a0e9e. 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/USHM22114481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd163b583db4a48d00ef3fcda19bb929758ac242168483d01283ca45bcf0d2cf. 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/USHM22114482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46227873b2bdcbcebb142c398b738be94a26394ebdee321ae3a6a0b1a8020c84. 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/USHM22114483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee158ce574f3030156ca98ec5bcdf6a380a861047db04e94665e16f248fae72. 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/USHM22114485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab14725c4a71bf221237c9e8767f9fb5699f08ac4cf73dc3c469276d90a5234. 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/QZPLS2001170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea4079cb8540308d08f1eb413e0ac8b5eb35da113a2b79510470c611f8bc9ff. 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/QZFZ62123885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0c939acf9b2a3a99faf0eade97469e8963cc67a127e2aeb608b789cd174c4f. 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/QZFZ62123886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c067a866f6af9e90164b7b719a0de15ac3ccf202922c7aa72bbfe6ddea1b24. 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/QZFZ62123887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d543b62a0782e599e559ebc0818b47f380fd2bd4b67278aabd4ea91fa0c811. 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/QZFZ62123888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0cacd28bef642b45905a07044307eaccd1b5157ecc222b8ffd2a3cb51dce68. 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/QZFZ62123889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7716f9e35109153bff066bcef022127fb66df401bd58b7c3eacbe9230bcb2dc2. 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/QZFZ62123890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5412b14be58aceeb711daeb03359ac6f5ca5f20455b8d84860636f5e2b78f588. 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/QZFZ22156834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414bef14d8582d2c1d308a88353ea269a8b5400d99203c80725c32c0efd49406. 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/QZFZ62123891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1e284bd7f96dd67abfb89e2e101c378c8e5a40eb2a6dd75f498bf6b0074939. 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/QZFZ62123892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd977658ddba05d1438b04e39cb0ee163fae232c52eaaa3d19fa7fdb7abf36462. 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/QZFZ62123893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad4466fa18e4f0415476ac253b60572c1f20eab33380d73fb9a4cdde4c4eafd. 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/QZFZ62123894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ee4cba5916f1f39b17bfc2553c58c93a7a98b84758990d6bb0708df2a1dbba. 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/QZFZ62123895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7cd03b00fafd9fe9c25785a44b669248d84116bf783e1aa6330ee5baaf20ff. 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/QZFZ62123896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ef8d81e3ffc121a14b6d8e3db91d2d289ba5e76809af77018408b792793a20. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ62123897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2693363ef7c5ee1eda49711b681cde367850418fb74838700e056d091d0c9901. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFZ62123898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2531a21d95ba1550b8571156ffd53049018b07f6d870c6b61375518f5d22d3b8. 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/QZFZ62123899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcfc65505785ea224636fdf2e509b454964f15f3a6e8246fd40a1af969804b4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFZ62123900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f09faadc5b830d153ac89c8881cb26c8188ab519d775888febf067ba3d7517c. 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/QZFZ62123901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7467f4a84655952ec3fac93820c707ef4a1d5286c8ab39d7750994ea9ca93f1c. 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/QZFZ62123902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa331b06efba64f12d811d2695433a3915e801b066945405f76ac0dfc721bd2c8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ62123903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836f479a418c9ec59332493458f4129d21cc946d080ab5a71273ac7b60c538c2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9K2405685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ffb67b1e4fb2566804e86d02317c8e31b5b9b99909ba393a931bd4d05ff06a. 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/SE6TI2163989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9059221dae9aabccbd9b99b3bafd0cde54579dc4fe9bcdf40ddf2f2d836f7ed3. 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/SE5752113046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc8b6b1ad46f77a7a0585118d77ce2b5cc1efca97d8003a324d11f1223724c7. 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/SE6XW2408493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b7b3859e7834f825a36d6879562464aff1beca0bee55bc210ed542c1c60d1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEP2428047.