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 0xbffc4d67f936e4bcf34282d52b04e9daa015ec65d2e81bff9d0cbe95a1ee2a9e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d5d2135-8e96-4641-a0ab-d4ee38f0a388.json and https://artists.proofprofile.net/proofs/artist/9d5d2135-8e96-4641-a0ab-d4ee38f0a388.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 0x72fea95f547fc2096d06029f0106b0c0304cade88ed11230638e7e367422892b. 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/US25L0701030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f1d18910540f1153e3a84afe3595bfce6cf19f1a9e32550f1881ba969e382c. 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/US25L0700979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24375ed8a541f366d8ce18351f3bfbd7061f1a3cb6a3e13f8b5a33f5d3bab45e. 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/US25L0700861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd273d3acd54f8a707ae44d4dcea9e7e64cebea3095e29461e1152bb66fe8018b. 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/US25L0700699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa28eb96a9ed3cbc4ba9c6fd3fdb9ea0677b65cbeb5e81f1733c5faf03cfb6ce. 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/US25L0700726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f037faf1e55c02476d7c7f3e251e50f4f3d4279d36f9845b39fe46bab8fb2f. 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/US25L0701031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069c51edd72c8cc18176441dc3b4ef309ccb431671959ed608b2680c97db61b6. 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/US25L0701032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ca31f3fe332fad7050811441619c7bd737a0e03828b094a95ba1c519a4ebe5. 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/US25L0701033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8d08dc07f750e8c3ae9b4bd004aebdaa36b0a00c5273b1432a5d8c95f901e8. 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/US25L0701034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c22dbfcac55472e266fad8802297f3f47965b8e728a02bb8c0d0160d10174c. 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/US25L0700790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e8f2e7db7cd129d795a2157a635d08a49b3224cb5107598a8b431e470af891. 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/US25L0700873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369c559e5aac8c58c3080c5b31a3a26b95e9152db5cec4b3b3ee9507a34b5f28. 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/US25L0700816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fea95f547fc2096d06029f0106b0c0304cade88ed11230638e7e367422892b. 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/US25L0701030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069c51edd72c8cc18176441dc3b4ef309ccb431671959ed608b2680c97db61b6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US25L0701032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ca31f3fe332fad7050811441619c7bd737a0e03828b094a95ba1c519a4ebe5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US25L0701033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c22dbfcac55472e266fad8802297f3f47965b8e728a02bb8c0d0160d10174c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US25L0700790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e8f2e7db7cd129d795a2157a635d08a49b3224cb5107598a8b431e470af891. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US25L0700873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0139707ad0b7bbe39ff2e70f68e9236b76eef872e705312e7845a54a0587cc. 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/US25L0701036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2f075353468caf3fe520828983791cf8f72dc4e60c14e1ae19dcb7a2697673. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US25L0701037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc57d872c6737f6c40326265b955ff44e9d2ff643bd443a72b373224124b3989. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/US25L0701040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbb5771333d264a1bc4457f01180ff22a69db796235c98730fd6d0855e45c07. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US25L0400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eed9196a974302ea9e3fc134d6b1bbf467cde3d7ec7f01b3d5653753eff334. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US25L0701027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf447417159639bc456d38a32e3c33b489681fb7ca8c876ec437730f87fa6be2a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:05:56Z), 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/US25L0701029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd690041b57dbdc6a55c6246de3a61baf7f520cc7caf4aa67aa4b7ad5fd9ebe09. 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/US25L0700801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a30f9eccbb67eb58c3e115a1d218eff5bc67ea0873738cdc21ab9e81432696a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US25L0701005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2f075353468caf3fe520828983791cf8f72dc4e60c14e1ae19dcb7a2697673. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US25L0701037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633d3ed763e08af5916e6993f6886de213455460a0f335b43ff2e8e8a89dc939. 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/US25L0700882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd273d3acd54f8a707ae44d4dcea9e7e64cebea3095e29461e1152bb66fe8018b. 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/US25L0700699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eed9196a974302ea9e3fc134d6b1bbf467cde3d7ec7f01b3d5653753eff334. 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/US25L0701027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1394d968b4e9a573f0725436541f50e7f1d04ae543713ee44dc65ba676081666. 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/US25L0700706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1394d968b4e9a573f0725436541f50e7f1d04ae543713ee44dc65ba676081666. 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/US25L0700706.