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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df40ffbf3ce3b5d6dda4b9b34638e08f0263b751d495612bb661893044ca2dc. 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/c3e98600-10a0-4d6a-a4b5-12cf1591cfd5.json and https://artists.proofprofile.net/proofs/artist/c3e98600-10a0-4d6a-a4b5-12cf1591cfd5.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58e72715cff29539e725344e879307bda08f4edb7769bafab5e83480fcd2ce8. 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/QZNWV2235681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3421ea53e4f547a2ed5068edc45d7cf04bd1e70e776e368034fdad2edd1a597. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZHN32364301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fa12ba29c9ebf20a0f563bb31835c7897489f2203f445cd4fbcd7c0a08fccd. 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/QZFYY2046743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e31370115dea3d4699fa5afaf09159a9bf14760f193018234d7d04b88810c3. 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/QZFYY2046744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b924becfaab3d1e0e42ae21302543361017ef989906a3ad5c32a3581ca364f9. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZFYY2046745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5396b29e5cf1ff7f0e3bb76d28ec079350bde18b47d6192350e959cc725ead8a. 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/QZ4JJ1846073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570985641a37f28465b0f35a7be0eaa4c018be35e00e28c2f01c1d3e8a03c6d8. 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/QZ4JJ1846074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c5e168b286fdaece0d8ddeba61bb56002137c258fa9daadbc41c109c5b4d8b. 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/QZ4JJ1846075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f988c9884e31f1700f60b2476871aba33187fbd6f4cdd635f995a760874181. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZ4JJ1846078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acebf8c6d625dbc4e415681cb446b9fcd8aada7859ef91cd32925c644eb0a44. 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/QZ4JJ1846079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019d6bf69a01de7961bdaa73c44e0a5ac2c54b61c6f00f82bbbf17af4825ae6e. 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/QZ4JJ1846085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f42b0f73a99375cca20fc9b6d32ad4512b524557845421d0a2746eed6468b8b. 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/QZ4JJ1846088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3ac802dd6bbc7689386cf2bac2cc7d26ca06dee57070fffb51002c07a74502. 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/QZFYY2087034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e763c9c460378e1eb1411b8baa79a52e566ff40cd9950978fb4b700474b0fd. 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/QZFYY2087038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60033c8072abc084d2d234774262e8892a384bd8ba7a9bda3e4ccb7d1bab367. 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/QZFYY2087039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02514315560edb7956c8cf1efa6c15c0536175b0c8101679834e0cdca37c59ec. 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/QZFYY2087042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4999c93f408b8d0eec23168c367e3ad61aed5cfda651c9f56bc318e42f33b6d. 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/QZFYZ1911489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311638e134b1596a35809b7728ae4bcb55e7d9596fd0497fccc2852a45c30b3e. 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/QZTB32519757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3dd7105597051075c68c48208ffbe515e4fd98a4217a7cb1901818bcba9e7d. 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/NL8RL2500753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4390a4f78c6a3accab874016f58300f4beb57735bfb867a2cf1110357fc94b. 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/QZWFJ2428720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77eb5dd97355f0032787a40250bccc09e67dce3025d67537ec3d5da189411ca. 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/GBWUL2380157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be9eba2ddf8585cb021546ba2a2a862537c08122155b80a248e4fbf18500263. 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/GBWUL2380780.
Under Your Spell - Place Your Hand in Mine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b8da856622f0b471827b8ea378308566ef81f20843e91df1c39ae69888e84f. 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/GBWUL2380783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d7fb53f7648b6f2e9a005ab3d298f49ec56b8709a23ac38642596b0947e872. 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/GBWUL2380786.
Under Your Spell (Place Your Hand in Mine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b8da856622f0b471827b8ea378308566ef81f20843e91df1c39ae69888e84f. 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/GBWUL2380783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6aae1ca3ca2fd56b076338a224082608a704d6b01ecdd3bfcce4dc4dd76ea0d. 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/QZK6L2275039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc7337297ee320ddcacff8822819cafc528b9bc2af6e129e2118010da843427. 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/QZK6Q2173636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5670fe1e94fac33f753210508eaeeceb5f58586ac18c563c623c51dfbec4aec6. 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/QZES92025876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa963acbfe8472ba39c44dd6227abba44472060d38455fefd89880e28e00d41b5. 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/QZDA52069256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1de6aa474cde090c4eb1d0ffb660d9070ac787825705915c864a2a350568090. 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/QZDA62001847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93213f631f38380c5713af96b8c0cd11bc17def3a1018e73c63adff4fdc448e8. 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/QZDA52069258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308b763d2843b3da772612e88c2ad5baa15e65df9d62328997c653f366261a75. 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/QZDA52069259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a344768b17aff16f3367138f9f1c0ae2d47fb9754c15fb3fd68a031c4f874f5. 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/QZNWZ2030659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d5e195c6b28ca47e25d22d8ed5b4cb196e2222e2f3ea2ac45837a82bcc4fc9. 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/UKELY1700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4ba3a6a4d3a2ac133a926df6224a5c957df70ae015b44eb56880239369c0fb. 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/QZTBF2489223.
The Devil Won't Stop Knocking on My Front Door