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 0x82521f3bb993ec928a984de7857251752b52b89b6e4849ec9cf89a3383008c6c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fef00c70-077c-412a-b4e9-0ae98d70fb27.json and https://artists.proofprofile.net/proofs/artist/fef00c70-077c-412a-b4e9-0ae98d70fb27.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 0xf6f3f7d1b264c47b8c455636d55a193d92fada2c30bd5818f277a10ae0cf14d1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/RUA1D1812850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beac11e4bfe3819b465390b9cce6f674778f573e1819844294c5ddb94f47585. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:11Z), 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/RUA1D1812835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76678fa6cf0b39b2f771d88afef1a3275149f4fb556f43e2c4e08e733dd22f1. 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/RUA1D1812843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ca3cfcb0b933b0bc76e87a5be27f6427556ee77cd012f88daf6c3c2ac530e1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUA1D1812770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f3b261719146a1c08568c028a0fa9bf892f427836919aa9d1c68f6240dff2c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA1D1812814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08339ee993616ab36370793567fec8f67784151c5e18f87b4bc64d2feb2d92d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:25Z), 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/RUA1D1812791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568d85f1e0ee6332bb60a5ebefb7e4981a9e634627b44c37543d1c6d470d1828. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUA1D1812810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486608481cf738ca4873c13c18849f8eb3b9399a26e60fca2c628c6e28a35bf6. 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/RUA1D1812751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd144b89bbc74d5ed81f1053e7dd8b9ede6895986c4f46fb8ae068d2138a770c2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUA1D1917666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a69ca65374d3d184f4612df8182da073f376cd24b0c86caf4994a01eed22448. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA1D2293893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0fc898e5353b93853ee1d70212277278732773eb13db878a60e0a65f637ec5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUA1D2360585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc39dc933d8ef617603780821f0d28be84b88cce87a10a8b1fb7d04de710fe46. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUA1D2360590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfcf54201abfc7e50d5374fd34a4d3c16b659075784f1d4b85bd729cddca089. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUA1D2360596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68357f84eca0add372c9ce8e7be4ecaa98d39265f508eec4140d5a8b0bd33190. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D1922364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235506d76a9653c268da111c5cac89d46f4403baa4844196b4dc45e96ca4bc65. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/RUA1D2360601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051a158a2bd12c9208f31b053ffb93678767c656feca8b1e8d094c69e493d1bf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:01:02Z), 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/RUA1D2390311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78786c71f8b78823e8743431992b2c452390bc0048aae1a9b92dd93bbbbdb19. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/RUAGT2349990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004d281926297cf06bf1515704dc2a5bebd0bcac218aea0279f62673c130bb8e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUAGT2349992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0aa0867d49fc11c19974a5cf9f13818f03481137f3a35722c05bced53299c2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:38:33Z), 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/RUAGT2349996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa039e400c0cf294e8dded6e720e48fd4a49bfd12cae6433db3b67d8f04fb2059. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/RUAGT2350000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798d5d36d97db2e1f8f86fb94ae1ed16e38fe390cb64b9d5258ce7985d7d45b3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGT2350008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503b2d00646cb60da6cab525d3d79684293daf70f36a317f18698dc717df72e3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUAGT2500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a13de28bbd3807e0ae14f248104fd064514c1bb024241cce8e5e3f740a0e176. 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/RUAGT2500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb71003cfdfa433a79d14c3c82dac1846a2d5518eed57e292f043ba09d300a65. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/RUAGT2500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342e11aef811fb49d0169f821a38dd44e067d51d3989e13e04b29b65b01bf607. 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/RUA1D2449715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a8018344425552ecf1ff6d5df16dff5755b43da088a34d97397880cb1fdce3. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:06:37Z), 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/RUAGT2351756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17136efe3e9b1881f10585c4fa8ee646e8daf48d5090aea13185cb95b3f2258. 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/RUAGW2400482.