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 0xc0a800ef3c4e45d30e103aa40f68321f60e837402df03f2cb89bbd8af6744478. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9466edab-fd00-4cd5-b0a0-d1a2aeb5416d.json and https://artists.proofprofile.net/proofs/artist/9466edab-fd00-4cd5-b0a0-d1a2aeb5416d.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 0xf6f5e2908756c0b0dbd97eb876c424ee6f2fe24856953119fb33783b509f36a0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEBE71900536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cdff4798f9d3f539c92467adc70a25469b65ee9a4bd06ca763897a51b92ff7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEBE71900537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b69dce5f2df8e3fd67ab8fb7bb49847851f20035bec8e5ce82e77ef06a4dac. 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/USTCG2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af0286e0f15da4fa8a0b8cd3a2cb8ac7fc15f95f5aeb21bc92f3536cf31435. 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/USTCG2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b0c98d1c6181c8c7872eb5b6bb23a83cd211b81c1074e7abee3497f6311c1e. 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/ES94G2449003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9750b1fb5b69420ba06f1b2a01e8cf9549805581cc92767eccb18e97178f5ae. 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/ES94G2449004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af0286e0f15da4fa8a0b8cd3a2cb8ac7fc15f95f5aeb21bc92f3536cf31435. 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/USTCG2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98261c8928cbd6c793b1860d5a1208ce5ac026006cab452f0707682f0d7dd54. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QM4TW2482278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4bff9302330008a504f1dcc4b048910fc62c2d106ccf555a5ce2b150efeefb. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/QZZ8A2314505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fda186de8061bdb7ba2a91524b8f8413da092b9c95bc3a36cccb40c91a44e8. 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/GBKQU2346400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9624c5b91f1a5146893767638edcfa70674d956c6a4c953e59cce9939e444a5a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CA5KR2324284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1008e710e9a694bd9fedc381944c3e40c88197aecf84ccef1dfe2e056f05c0bc. 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/CA5KR2324285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e16f98e5c8ff2fb950104964d5d0845a522ad94f89515f7828a8ea4db2b6f8. 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/GBJX32110025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9347e55e617b856930ec5ba7291b14cd4fc7b4c099d2e1672a3ab2de870f2ec. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBKQU2187578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689cf47537dc3a14cb5dfe443fa73ea3b42599619007ebd4d64c50f4de886719. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/GBKQU2187576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b4ca7baf6ac69cc3bc1f12cbec9b7591266af4445ea24aea70b2e54809b4e1. 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/CA5KR2240128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1937139dfe451f37fbe42a3c6296f8e166267904319c4bbf218d0d970e8ccfa. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEW872105283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aedb254c7b8119aa11902cace428fd109ec7a3761a1475eff9b29a30e2c311f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEW872105282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010cd923a5390d94416373f7b817e8694f7de39e992d3d37475d184ee932af62. 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/US83Z2021401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfb288a4a18a57c8f57635a0bb14014f79ec858fcdae9a0725a3b7193abbbbd. 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/GBKQU1957296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906db50d4e62dca8a96fafd4d7a0b36922e7671695e9dc4a871a16e611b70c6f. 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/US83Z1905858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7785143b4479adf2ed436c1ac5eaeafbfa5e942e90d543800fd4dbdf4a4e49. 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/US83Z1900472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37ce9fc213be7461c532d14acd06384de9feb2130364557a6dd5c4fa211d049. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CA5KR1805316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc546df1039327d6de7df1e2b3d9693bbc65a182ace3da883505e00816f5668cc. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CA5KR1555794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56703968690f37b11b85c47545915834f869f8053b97428df62081cc617b082. 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/US83Z2005780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd8a747ffd9892bd21830c909cf7bd869f11a36928dae78eb1d904dbb8871f8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US83Z2005771.
Blue Faces - Beth Lydi, Andreas Henneberg Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7148cb8d64b8f103bd7a9c033a8fec7c557d81fb3d57d3236b71b2aa255d75. 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/US83Z2119891.