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 0xd40cd7eb5383073184398f02556afeb1eb71d7852ea96ede7b91229da46bdb7f. 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/ae7c8450-a6e1-4262-81bb-07625d7bb854.json and https://artists.proofprofile.net/proofs/artist/ae7c8450-a6e1-4262-81bb-07625d7bb854.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 0x8e93f2e93a7382c9d723b56de7456396db36e6b5657cb2c65170928ec4358ba2. 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/DEAS92300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238155e6248500fcedfa6fa5a048647bcdb584c65cba33a6d0cfa1f9fc5e1ce8. 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/DEAS92300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fd7e4c1097c3ca2be0d7ac9f12559ce3871acec15c72e801cd0501177debbb. 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/DEAS92300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebf0d92263cd24624c12b34bd024396b0901976f5d49cb1c1fa3beadb7a079d. 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/DEAS92300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5674caab17db131381c5e4a00a13ffec2863b08dcaed6fe1c386948375b45805. 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/DEAS92300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5de299fd788143fe40bc43e499aa962070863d85d0be4c3033d4b6c0130cb0. 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/DEAS92100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79f5469e7be002f08b159878d91a7130a9de180dea7eb1cda25b5f2a6b3dd16. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:35:11Z), 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/DEAS92100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedffd80710d4f0e89e40f8a4f86e200301955041dddd1ed522bba8f2dae82f0. 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/DEAS92100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe36566f82a695d96ef6d2fae3b37c65072e7d491d1671a1f1e0e551eadee68. 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/DEAS92100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb52724d0b3764a31099ec8763a056ec4b9f38f96e00b4abe40a80baecacb51. 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/DEAS92000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd530c52f87e7995938ade1eebfbf5ed7310f9f7fe29a8094145216a82648078c. 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/DEAS92000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e162562e8ed09aeee30830826ad0b669b1006f52ce14ea62049540d627afd1a. 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/DEAS92000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa853802dba570f4f3ce54840ffa38675df3f191b80f9ca218e69d8c3fd49e870. 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/DEAS92000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bbdd5dbbf945ab3703d8510f2afe36588c4e8035e4b28965b2eb8111fa6f92. 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/DEAS92000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e59d77dd92b1ac2d7650c01fdbf3b8a75c2c9bc374fec6ca98b71714760cc0. 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/DEAS92000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab0ec6f590d4d19b9e7536561480e6c1e35acae78020770802c1faacdc4b03f. 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/DEAS92000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee6a212472c581f1b15eb27eba499fc37dbf1e7cff19e5ac6500177aef426f3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEAS92000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1697f0ef50972f8a71bcfe680af98263652a12127d434614ad2b3472e554173f. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T16:38:17Z), 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/DEAS92000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238155e6248500fcedfa6fa5a048647bcdb584c65cba33a6d0cfa1f9fc5e1ce8. 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/DEAS92300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79f5469e7be002f08b159878d91a7130a9de180dea7eb1cda25b5f2a6b3dd16. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEAS92100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e59d77dd92b1ac2d7650c01fdbf3b8a75c2c9bc374fec6ca98b71714760cc0. 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/DEAS92000015.