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 0xc5ef8fcfeb1844055452264af43609d1e5496cf2ac731c9293174f7b2f679587. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d18257f5-9360-41eb-869d-36ba858476ff.json and https://artists.proofprofile.net/proofs/artist/d18257f5-9360-41eb-869d-36ba858476ff.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 0xac3c374239585f6c377283e133ab97768aee33cdcd353edf317b4c069a963777. 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/FR10S1669269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bb468879411faa76a62cacfc99adb2d27e8be42276e867552bfcb7ea3ef7bd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR10S1661014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890423a8f0da51b73fe61f44ae77d771ee3f5add136eec3d33b2d7c3e771ae51. 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/FR10S1658646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a8763529147cb3ea87d420dbfc27cebc789d126a52b1a45245ba5b415e4618. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:37:01Z), 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/FR10S1658649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b7c64047a0e2cd8aca8e368e295b811616248ab3fc28a0af455bf251161818. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:50:08Z), 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/FR10S1658652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abe8d7afc37b621b4870f54c8ae6b60f3cd46a1b0a34d34caf9da9437ead567. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:36:59Z), 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/FR2X41515924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03acad84f51aa64a5414ad4cad8d2306248147387bfe1d33752155f8a563edb5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:29Z), 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/FR2X41515988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2442adad069a38c65409434e17135f2ce6869306058f9c07257c53aa41f6c86. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/FR2X41515996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3140381ea6afb76ba39fa91926fb68d6f615e2ebb353fe48bdd3c39506ab1e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:31:48Z), 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/QZHN52075360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff5d7463b45507fe99fc7971c5e54a3de739cf39b60744cb5e6f2a756edb50b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:40:14Z), 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/DETO41664603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722056f9856ee99f3852a3e07e56e69d5a63e7d3af1c309830ec7ea601559392. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHN52075325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00e479ffc6d71125ee590d3428d6b7ea2f4d84f15b0c9e98a45013c7104901c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZHN52075340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbc6534ecb23b51c7a28bb4aeb96c892d4d6b9c94cb1b36802ea5f1c378b821. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/FR2X41904084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17dc20228c1d6392c872b47690f3d9324555fac35c68132aeb68d21c954f984. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:38:33Z), 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/FR2X41903120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de383f3beea68ca87ac6d4e4cd2605b30907b6d8a15d732cdade4db4627715c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN52075334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef3f8fda43dcb3696957eef0a1da977cb39172b562611d02c57b30bdb09c515. 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/FR10S1661043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44cf55cfb5ce472fd965ccf691d828a1967127960a368cf972a4655a416e45e. 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/FR2X41611770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ec2670f2971d10be15a45499b3ac4d5e00374f7a1729559263ffa5eb599b2. 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/FRX201853350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc567014f123fa9ff24af592ff35e4af365434060654b60bb2ea67b2988ae859a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:04:17Z), 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/ALA091900221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780ab190fb819aecbf02b982dbd9644bca2f0816caddd213a00e82493021a765. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFYW2089503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae1b9a0f7d2041f513281a119648eaf8d1df3d1cbaa2ca0c1ac7594d417ecd9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:26Z), 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/QZFZ72056267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94af68e691758564339e22057bce8406f732d6cee4017233ce2d52f46db5702a. 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/FRX762009394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c152f4cbd3a8d3eb26ddb921b8c9d7d040db67d92f53c96e0a902302f960a35. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FRX202123871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb60ee77b9e9743c05af784abf43a1a878d6bc5202c295be5cf6feb5eb65b59. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRX202123870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b83f4c4de85822fd10b757e82cf3f3b5fa7c7ec861b9ef56784ab4135de726. 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/FRX202162209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5da3a18e78046e6615c7f6fbf7baf1893d05c1d4ef689ef298a550bfc5808d1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX872264722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dc7d26d9d7330ecf61687ef252569f1d8ac765884489082640cdb730f1f7e2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GX7852200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dc7d26d9d7330ecf61687ef252569f1d8ac765884489082640cdb730f1f7e2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:46Z), 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/GX7852200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de69086e52c4ba2c3057b26c172c0ff7ec33e05e68811e05978c6b327321f0a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:59Z), 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/GX7852200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad47e3c3c0a638da35f9f52bd11041e49b7326a68cae45b354ff198f06351d02. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR96X2337945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd028f7a359a154f3fcd0e5dc64b4badf8cf8558029fdf7f017e32db730e1e1e. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/FRX452499236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023b726b5675d7604358917c813d52a3d4ea8e49d2dd82e24cef4a0e492a60ed. 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/GX7852500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ee496be4cb2db7d06d1e794fafcb76ef0bf11e4ab86fa521282f892e8d54cc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:53Z), 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/GX7852500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefff37654e36b5feaf861fbe97d26435a4ecb0a768c9904e4547d683ba8e6d7a. 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/DGA062565028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b21988431ebf98d87eb4479e696cee3a65c9038fcf7534a3650f2ef73022ca. 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/DGA062564329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b630c9aebc4d510f8bff40f9ec517258de160cf37421022d6416951ddf1aeb. 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/DGA062569691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7520c020cfef9d384a8d54fe08e92cb5c90864288594e0decdacf4e2600e3b4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:55Z), 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/DGA062584912.