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 0xda9373495f8fd8467163fb89b47f41867b488ea5710432fb5bb4fa6be4ef8063. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07889f0b-ee6f-4b0d-850b-c3865fb0b043.json and https://artists.proofprofile.net/proofs/artist/07889f0b-ee6f-4b0d-850b-c3865fb0b043.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 0x4d9c7ce817ea6d948bb9e908ed3ec5fca0034f0933a8a1760a802563458b8298. 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/USEP41239001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb94539ac44a5a19cb0c829fd5121b74b4242976b505a38d88533d82a7f8bed6. 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/USEP41239002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ad2de6037d5a98a83287f55804aa7b4323f7f077e3861559d81f191bbb9473. 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/USEP41239003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e77c7e973c582e53ab7533cb6f859fb6c7ec3b856c76241c87d76b9c92e213. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USEP41239004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19c08ed68e4023523bdc4746a444417d265758ef0e37fa4a709ba3608e9a354. 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/USEP41239007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee4d785a18cee7c816f86aff93472ce345e34c878b829c6e421fd4313304b54. 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/USEP41239008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb654992495242530b795bc200437aca3312ebc45b6a1f765ea8fe05d7165787d. 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/USEP41239009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b2477660802b69c176c473d7ce445d8929a8ca1a6208eeb5f1308da7bd7382. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USEP41239005.
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 0xd1ec571380c5a4afec004fcd3654f1dc487eaaa1487271f931c70a52353811ea. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USEP41239006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e88ecd4e60bbaa325fad8dc00c1ebcba097a5097833819441986dd11665fb33. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USEP41239010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fe61074f05d0adfa1a2f5b0c3c26b6a0dfe25f70b615f289a54fadb66ffed1. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USEP41239011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fad57baf6b3cc4fb9732c174f1f072879585b3731c0c6d01d917545e2f74a0. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USEP41239012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfe83582692e796c7fb3f7ba6225924dae6466c00d560caf9dc7e27900e136e. 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/USEP41008001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0941c27ac7c552bbdd65a1c752c72beaf57c34a4523020c5ea1ebf1b265b76. 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/USEP41008002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e4ea69e989574930b047f55d4a3df0baeab528b99d23d44b2c3a5a5ccf449. 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/USEP41008003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbda0024bfae3d6ad2655cb1d360abb567aad2c78b34113dd82c1a79e2c3188. 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/USEP41008004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0058574a1972ea53af1b0adfeef685ba70c4270f0fa7913c6811e82b0e51326. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USEP41008005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e878c5c4c7670228773e31bc38cd25097e92822d5b5b83b496c19c1a3d544c. 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/USEP41008007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc61fee45026d6f5bb10ce7e24bb75ed4887de3adc86f8d9dd06e97b8c64e72. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/USEP41008009.
Getting Kicked In The Face Has Never Been So Much Fun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1989c79f21c505853214eb82afe7760e2e52d4e5ed445a24bb337a95a0aece1. 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/USEP41008010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d215da32263657d156795d33247d764ca14dd8806151ca54977ac1491e5919b. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USEP41008006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65e7e7bfd75453f192222817604cc068fbdc9217015c766ba7f8646b5c903e9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USEP41008008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98f7454dc578800f574b1dabb67c8b8e1ee92bd71baf864df85d2f4a3952c6e. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USEP41008011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338b91e41fbfec48cba3bebf6808aa9be01261434ba8b3aa24ac3786e47e8dfb. 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/QZ8LD1947149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b1aca34b51dfae935665d9e871cf3c4eacb1231d39d9229a7c18a93be04cf0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDA51886542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93f114f21bd6eb70af1b4c5e2358fb00c49c900aad754ac113e2cc42adf0f47. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA41837711.