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 0x4a0d0fce60165df999dc10bcad64333bf482ed5a376379f558e3c5ede5b1b1d0. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34c862b0-fec1-4c61-9c2c-0f640b4f1834.json and https://artists.proofprofile.net/proofs/artist/34c862b0-fec1-4c61-9c2c-0f640b4f1834.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 0x7fb964b1ac04586540e0a27bc9b0b61b0bdd1bdce2b803041343c919f631f0a2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:41:25Z), 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/QZWDE2400382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16807e07e4094e0e0617232801ece24fe3d1fcf35b484a8dfa149c48fa9ad190. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWDE2400383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93485cab526734e22f867f19334e5a1bc49e32e687bc6d465fad237eb498777. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:58:51Z), 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/QZWDE2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7d75edf2cfd80f6f1fc64e2c4e192909ea30aba1a54caea422c4d7b1ec88cb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:29:17Z), 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/QZWDE2400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39948f0518be1426c04315cf43e86f3a5eeb81219f9611b33fb0d2158a09cbe8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:41Z), 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/QZWDE2400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e257162b4e1df63e5576e18e31891732e0140082944224be8cbdecb1dd2127. 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/QZWDE2428992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5866e3ab67eceea025977c5c88089927fd821c4219409428cc872a28a35f9be5. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZWDE2428993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1536da16c8f461068d75dce4ece65291fb2db4f239cd1abee3e79112a0688b52. 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/QZWDE2428996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19be98c3fe5c05667127214d20685388ec9ef309d145c6270f45fb6d6998e0f3. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZWDE2428997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1549df8974e8cbba96a1be5461c48fa908cfc07b60be3ede527b87ad9cca34. 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/QZWDE2428998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf84041576a19948e7d468cc922e3c7082dde52ae4615177c3b0eb43c07c6638. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZWDE2428999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fe4a0aa1345ce797110e2f674528f78c9132170f7c3a18a171a02cfd04ff46. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZWDE2429000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff29e27beb0fb521ec57767687df5d41367f89d992803cde8d5404cabc2877b9. 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/QZWDE2429001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c5138a882a67bd59d5ac67073c85cb41a55afe919ff55656d734c843a71084. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:41:54Z), 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/QZZEB2430104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24a27bf706998271d54207d2836ac9d4b0e82fef153f145fa3ba677f2a583b8. 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/QZZEB2430105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7ea7bf823928add25fb3b6495764fb197d19fae95602ebd507f21fe86e4e03. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:49:29Z), 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/QZZEB2430106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363091b001020e969c06891c192c329db327fea037789e9f651af98a5aea5bc1. 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/QZZEB2430107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b55f8dd0e613bc0aa18d4fe01432be468e0cc8f23cdca30715ad3559116221f. 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/QZZEB2430108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6588a802d099aee878f0e243e8d7031423b6066795db1002d5213691f98350. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:49:37Z), 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/QZZEB2430109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3c0f7cc7f9627fa8e0d698efe2a5f12c771ae85ef8e32a57142232c123320c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:30:32Z), 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/QZZEB2430110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53323df577bbefe0f1b73eb278847c15ac9986314414f1f575bfc544ce33f1d4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:03Z), 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/QZZEB2430111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87398ae49e34e38df2e362d07adb5c52f36db7fc9853b31fc159bf3b10bcc33. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZZEB2430113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccd363c0134de711cb1e3e10a91672fd4908fd0f4efa6d76357e61c6082a4e9. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZZEB2430114.