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 0x775a369f4e29d5c57aef96c24a19b6df4b20c4d1ce700bca81cf1e39b6899b53. 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/fd86ee14-f7cf-4b61-95ba-075fcbeed4b3.json and https://artists.proofprofile.net/proofs/artist/fd86ee14-f7cf-4b61-95ba-075fcbeed4b3.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 0x100430fb8eac4430331e7c90e32c6d60d06a06f629b3ba48ebdc1e2ee18cdb21. 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/QZAPG1755816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ec20263eeecd4b00d6944dc2c567654e804a33ffdac08ce37e4c1317c2423f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZAPG1755817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0659afabd5b2b53e287841cb55356cf7971573a0d82dc42c6f5d07382096d4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZAPG1755819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f28037b96c66cbe575dcb4ad4f8d452045bb4723a4a79615d62767536add2c2. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZAPG1755820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c41ae73641eddda6cb0c4eb54872317e67629d299ebe19a6c18d56262622b25. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM2PV1855135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7c3473d6c1fe7053a6825117e7af07869f064968433125b899d8fa7c33f944. 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/QZES51834564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957f3a5f5a9b70ceed048c71f98bbd15ffe64902165bfc1e00ab3681979e1c71. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZES51834566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2e9707c0ef69ebefb48e0d9e0a91ac3f83a255eb9bef3e6cc7e9ef10626dd4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USA202143019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f12aae0eac83286fd1700d1973a53cc09e832fc1558f91fb5718c595c2830a1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USA2P2232620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3221280b9a62d22e04adcf6949b591284ecb9154db0ed4ef209aaeb81fbc2386. 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/USA2P2233802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb773015a6f8d51f92d5dc6c733b60b4a398b3c66862c5d7ebc172a5fbf758977. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AUNCC2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb773015a6f8d51f92d5dc6c733b60b4a398b3c66862c5d7ebc172a5fbf758977. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUNCC2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8666b60006cce5d890f7e15963e9ffbb183f6e374a761ad368a71dcd921b1ae1. 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/AUNCC2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c838dbd881adccdfc002d5d3b18586d91af5c373f31589972b43da169fca734. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AUNCC2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6c5f2527646a707fc999666e3f24e1cffa2eb63c6fad519aa9c3ca9282defe. 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/AUNCC2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802c5eeca0af9b6f1c3ed1660eb2512c54a02bacd4159c0478aeeac822db0fdf. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/AUNCC2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb3d014e83d2a8d6c04763c38736a795b72a2fe04a7efc1205913d798dead59. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/AUNCC2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30e3c6a4af486fb7c373e0f9896da78334099776b20c8c267f7673d91ef2d36. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/AUNCC2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77c2b97f375c4b8957b2c666ac79d0b338f5d8189662a116552ec1298346fde. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/AUNCC2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cb6f7e25411872ec493b597231863a55d46abc32b879e4d6c68024abed63ef. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUNCC2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65084223035cf681446a191f7afe15d7c6882e4dedb5410c60d660009d4b9ffa. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/AUNCC2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9138803b4589536fdfdecb6f6d5957b156183da81bfd104dabda367d167baeb9. 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/DED832500258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26edeab485f6560f41fb16e841edd6fbf674adef1f8627b9ebf5febfb5177d7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DED832500259.
Killstar (The Cold World) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffefc1f256519af709e1ba89eaa6ce3ac16cbbcb99fb94dd70eee725f0aeac4d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/DED832500260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2237a12615761bdd80e8e1553d57b818e70ce8426b01a03888fec37749504f61. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DED832500261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb852dff306bfd423d685b534295790d126941a4e6fe4fcff971ccbb34ac1478. 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/DED832500262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a76569815162a48bfa3732182e6189df8ebb0ef495d866c2fe1bb54b3706a0. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DED832500263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54f7c5844f62958596a2ea7e1f2efa8dcc07742995db15b40df7b9d0a15f812. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DED832500264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdf8aa3765d7ed9b545fa4f1211aae6884ff10696009d9e6b2e828dcf435eb9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DED832500265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151b60df33cd5f9499f960589ee2a77c4ab73a7475bb107906a74b12e267c900. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DED832500267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714a58023343a4ad9e2d464781f5fc7eac236effc36fcb6b643cf5e2723822de. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DED832500268.