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 0x9efe8e2d1363472c64e97dba993b31d58ee5ac78339a18a7ddeef153619879eb. 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/d134f957-ceca-40f0-8565-c272949cafc8.json and https://artists.proofprofile.net/proofs/artist/d134f957-ceca-40f0-8565-c272949cafc8.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 0x499926a69da01ee30c99816b237b687ad6905698e912690baff0560c65a271e0. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/BGA472101892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a12b5dd3288cd8ef86512eb9e6f3c7a03f66c76a2199f184c6d9180016f179. 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/BGA472101893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3985be2d5f3b7d33d92513dd90641945302d9a50d1139a256eb232dd362162f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472101894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ac7a9d2cbc3e36d7145681cc4227620a7be284e86f949a2f5d7282650bc2f3. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/BGA472101902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f169ecc4fbb6cff98785873d0cfe5705571c5a7f0a405b0e86dfef538c5f534. 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/BGA472109926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca11ff9849e3996881576f21cef6bb4c663077b4669f71efa0945a94316ff67. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BGA472109927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677ba046473102a51b9f4d5472b01cfb787fbf33ac5d2fd4e41ca9bd126b3385. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BGA472109928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a15fcaacd5b7fb3a31278ab842c6b07e2c7799216fafeae0bf23b656790ff9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BGA472109929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191341fed861d302217668f72e8f1cbc55a826201e25e5f7fcfd9f3b4b1c9235. 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/BGA472109931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83c9f0a749583d506d02e3688fbebfd602a908bf13ce3f9539f4b7b1189c4e2. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:45:33Z), 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/BGA472109935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7863f95a0bec1ef21f51062d3364c312dd32832621d2ab5de2fe24ecab59ab3d. 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/BGA472117141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235558f45fe7ca0db1ca540c4d89f6a27594586c3f553dd7e778b46508ee900c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472117145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2864f5f61856af49525bf127aca4a4a564e5c6ae4c1aec774a3b399acb6e0f29. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BGA472117146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c6cb214fd46b2b5df615f454a2e7a35b72f4dee41d3477c0ac251b1ff2a946. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:51:15Z), 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/BGA472117148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7ac4e97fe565aa8b4e0cf45863c2ad4879de10eba2ef12f0f4b2ce5dda8f17. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472117150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3181f1390d3d3091be36002ce8bdb68027d0d1ad42f3ddfb5f99b7b37df4475. 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/BGA472117152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6a45c7330365bbea8f9e162810a0ae5674e1f68317112d3709052b7d98d509. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BGA472117154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd04354ef92c858d45e206502e1d2bf7b8853fcf81fd4457526be6e16555a2a7. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/BGA472123387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa865ce5e4e45a82d432121b792dfe3d753377b97ce56921da11ebade214266df. 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/BGA472123388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ad4e5100d4eb8de7156dfa1869f940c56f16b907dc0d6fbcc7f679fab4db89. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BGA472123390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70a5777b5473a9f433eb2755e927624659836572ff350d59115ca797f4f25f4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472217860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a441bf4317c949653b7fb933725a91597aa8a0a53b003716e903873136e151d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472217862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd869efbad07bee68299c3da3219abe1494b00acc5958c57fd3faf7a78a4d1ffa. 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/BGA472217863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dd1a611cf40907add9ba99c3e0f63265c16ea5344d460d1c54d27769b16d42. 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/BGA472217864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4d58a223a664a19c1d8fbb570f63f4c4c041e1ef41a85405c11c8f1a839449. 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/BGA472217865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921350f553259e3f9cdf40f5968506cd3b66d32d6578d0646e01a8b7dd88a9b0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BGA472217866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8ab27a0bf5e7f232035e76716a97924bfce0b01d5409c7be0b3fe68f07a920. 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/BGA472217867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf672aefff7762ae7a2d0b844c36d512fd575e5f9eee8b4cfcc17a2ed96129b0. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:17Z), 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/BGA472407420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa826ed310fdcc1f11230ee9e3c58191971097faa166334aca0fa6e6119235b37. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BGA472407421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3ad46a7abe8e1692c9df1b5c4e323f3bb5f1cd0b555b0b28e4e92e5df3cd5b. 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/BGA472407422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe523ebf15cc2c053002e25d024ba0683e3c3ba79032b90b26f9c884fd7034b68. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472407423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46655afd7311b4e43ef7dcb2c728e90c54508142117d6e8952791e2221b9aaeb. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472407424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02351427db869491e9230a75c565c5ce4448ceac7bac28a6e506bf3967609a0. 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/BGA472407425.