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 0x2964620fb04698f59a5e45e8a4d61d6526d368e596a657165e6b7bd3fd7080c4. 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/a6f720ee-a6f7-428e-813b-3eb4f35282a2.json and https://artists.proofprofile.net/proofs/artist/a6f720ee-a6f7-428e-813b-3eb4f35282a2.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 0x3a1238d36246a124afb7c6dfec8f2d717dac5f53dd018a86cc5065485141153a. 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/USK340800689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcb60a6f563ecaea15fec55b2b6a13fd5cf03c7c1b9538df432b2bdc7ef281a. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:33:36Z), 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/USK340800690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd5d32b1cb178f350a37aefa11f87ee39a5f55e4c597aae3472a66146b7ab5f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USK340800693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c345d0f2611673bc59278d557e920872682c69bf0741f43e6cbce3bd106142. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USK340800696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1fd6d01a94fd36315f86dcc4bafbfb506379177f70f2a4eb73740b39a85649. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USK340800697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcb60a6f563ecaea15fec55b2b6a13fd5cf03c7c1b9538df432b2bdc7ef281a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:46:56Z), 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/USK340800690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd5d32b1cb178f350a37aefa11f87ee39a5f55e4c597aae3472a66146b7ab5f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USK340800693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c345d0f2611673bc59278d557e920872682c69bf0741f43e6cbce3bd106142. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:10Z), 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/USK340800696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497026d3f5520a9f80343d94cd470788b803b4c7328368b68818cf0dd74b1469. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USUM71007122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0264c6adf016d28276c96189cacdb1aabbdfe7c9961a4006fccde74c77add1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:52:44Z), 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/USUM71007133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342ffbf2b63ff2657a4ee5e3e93e1426b2b3b6665e106fdec2f155f2726ebbc8. 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/USUM71007135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7ab84a624f24474353db0d20cf1f75f7c80d5aea76fc54bdbb56e72e8d57a8. 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/USUM71007136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b2a8759bd69061d71979a7ac7ebb2158b5259479ea6e17acebacf3e80f2243. 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/USUM71007137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cf7cf59210406bc6ab30d9255ee6f058524581bdb867c22df5ab08f9fde063. 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/QM6DC1885220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05a1276e29abd2e0b866be30fc9775c4415a99826a3f3355e533ef6fed6a9c9. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:26:12Z), 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/QM6DC1885217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d61f98e3a50f769d389f3e7eb74b3933dd0521f7e72fa78e9f7138b50a15eb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6DC1885221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae69a8ae5b17b7b012f536400207f7ac0e69b8ced91fd9b55b43c2d69ff5a7a5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6DC1885223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d7d57d1c0029192694469c4e218b0661caeca743df72336626f25453b02cbc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6DC1885224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e801fd46edd4c2f5c6b0091ba879c5da48ef7ee283ec490d930de08675703f. 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/QM6DC1885226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4dbfafdec01c7f1ce158b0070f126ca09cbd0bd91ab7242dbb2a812b9bd65f. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/QM6DC1996960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4dbfafdec01c7f1ce158b0070f126ca09cbd0bd91ab7242dbb2a812b9bd65f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM6DC1996960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21444495e8a115f424b55b947b502c012c0b459f2d3c9d73cf4464302fb59f7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6DC1996959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169e637404c74a61f4265fe1053f5bae21008d7cb0437a4c96d66728dc6b5965. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:10Z), 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/QM6DC1996957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21444495e8a115f424b55b947b502c012c0b459f2d3c9d73cf4464302fb59f7. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:17Z), 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/QM6DC1996959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020d102c67746e10a36c9c5da03162a50d112ad34516abfc658f310db46aff21. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:32:40Z), 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/QM6DC1996958.