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 0xfd840244192507e2495caec034a59128eed38b06402799cd65b1bffb5dc7cc69. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76581877-9df2-4e51-a00b-f8e480b60ed7.json and https://artists.proofprofile.net/proofs/artist/76581877-9df2-4e51-a00b-f8e480b60ed7.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 0xcf68b537752a55e3f9df4bf6b490ffe298086fbf03ca3b5538cc35800651afa9. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:42:37Z), 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/USDHM1605144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416a97fa5bbc13f792fba08f48a87fb70f57d3399193174d961f1d7ddcad6b75. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USDHM1605145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32ee7fc9f2ae4f26f5bcbcca6f29174efc7c026dc1bf71ebc9e42f6611273d9. 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/USDHM1605150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa378f36a3d9813aefc4901b1ea05dc1691f92151023ba7239e16c450624546f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USDHM1605151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18694c2c145f7cd5b62d82201e816f97a0972b6e497a1104a2ce6c20c962541e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:26Z), 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/USDHM1605152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1166cb8dda069b0e4cce85aed6beef80d737a1e2f9c4553c401c7f062a852c1. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:38:03Z), 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/USDHM1605154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ca4c35ee0cb6b69b3002adddc4b9b75e877c5837d1c1b81f42f40bd756ec6e. 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/USDHM1605195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b7a767c555178d9af480141a8e6b0dbac6febf0088a3581d0a9a6c9aca5f69. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDHM1605198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13bf0e10d641a6a436a6f865e5e8ecde5da3f5ae32f05fd03e0d4496884f707. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:06:34Z), 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/USDHM1605520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee5cafaac7c85d1360b75b9858bc63d496c544881cc267d0ce827120774b68e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USDHM1605521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001c3e3da194b1b0727a21c2012c3fc824be9e8aa55d823e90633a694c19bf1b. 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/USDHM1605523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdb56cc421790b68ddedc3df53cd86f89fec5ad1ca503de2f3605142d9996ed. 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/USDHM1605525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c44ad28295b3cbd5043f98620fd204cacfa7d84bed816fecff6a17a261aa0e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDHM1605526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54148460efcbc8bee2bd3d3d101544c8582fa145a9647b0aad02f7a3d3317354. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/USDHM1605527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d59ccbb31fa837017c936065f46a00dbb01cfec53a633938912d3324b731da7. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USDHM1605528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d98ebf8cf9afbd101d2dced7c01bb78e2b7e5146ba3bc0e2db1cd0ed730a6d7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USDHM1605529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fa00d10beb8ec82e244ad3866ec5ae4ebbf413f347297bf18d65a6cb48d83b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:22:03Z), 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/USDHM1605530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e619bdf5c9ea8b475a8648a40bcf8e5eb09f5e56fa752fe87cf389f294137ef. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:06Z), 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/USDHM1605534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651ba93b93f1db804e44a277603d5af085cbd9d89f86101f87d0d193c7d68ac2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USDHM1605540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bbda7ed70637e1c5dab0ec75786d7539d63703d4b6488e2cc0260bbc4dbab4. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USDHM1605541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821fb26df81c3916e722916529222836643fad30c753b004ad36eef133adbba6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDHM1605542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230284897410f720395af5caf1d83bd0346d1c49ee142460295e8a77c5e15e5e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDHM1605543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b97aff97bd9be914527f3b501d4be7236eeb0f19d4a6b21d9ccb441bb5e4ec. 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/USDHM1605546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17d5d8577e83455523053cdad31cc11514d7fb388fc5632fc1c2685aa617428. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:03Z), 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/USDHM1605547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774bf96f5dfebf20c2f44eae47af6db5a894053cb991ca696683f0eedc97ab7b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USDHM1605633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adcd74ff52735bcd2371b35ed4b1aaaee0d0fdd8ce9b612317bb19aeb1e4a82. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDHM1605635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80213a10b824d024d623354378a8b71f0cfac07c4412410b7581f0fcbfd2f9e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDHM1605636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c2bc3b4d56510b6c07d76b0bb5fd6ec4c7ee9b55f7ed71548e4a59fde17d75. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USDHM1605637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c5ca4b992d09afbf88da50bce34d6284de2ffcb1c10ac8b6a469c54f7e016f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDHM1605638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd533ee6ceb9bc80c354e16660e7b326af0e53a75ef806eee4d69de33ed17111b. 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/USDHM1605640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8d70950ab3fd909a104e46f0b209c0843898a80362f031394484f52c8118f7. 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/USDHM1605642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ecae0333cd6826e25438fb01654a579f56ba6d412b6d854eb8306669586e82. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USDHM1605643.