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 0x5a52b6e5061895d3540109adcf2d5be8462c85319dd14f3dd89f82bab4169d01. 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/fb48dce5-caa7-4654-8a0a-79e8534589cb.json and https://artists.proofprofile.net/proofs/artist/fb48dce5-caa7-4654-8a0a-79e8534589cb.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 0xbbc7850c52eb920799953df79460d46c2d731d333310d0d9f0ca154511e57b69. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:03:06Z), 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/TCJPM2010180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e0ffd4fe81619bc1e3a83a3c192f9f7b488f07fa3f5fd142ef7b911fbc0b8. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:56:18Z), 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/TCJPM2010181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb20b2b165245a05cc6e32436a3debacba802678b78504d708a9c576b247590c. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:58:37Z), 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/TCJPM2010184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a72f8420fdcc3155a5ec4b70db2af47539df3d0ab29aa7740323163e19dcac. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCJPM2010191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f19080ac14b66bb38a81d2150097c4ce4f5dcfeced7a64b829d605010331c85. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCJPM2010196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca42dec51ed73d0b9d6d1985b2b2bd03396b260ca6bd3f673f7007f04692759. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCJPM2010197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ce7f58681f7f683bb20c5dab3cabc2e26b5c80aadde7e5c3509c9191e47ce0. 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/TCJPM2010202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4a1a360d482896c5df16b508b431a75d702fb9c932fb5f60933f0c9c2f5c60. 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/TCJPM2010204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dac7e48aa1d23430915345280d34b8bcd047a914370b26496db43278a7bb1a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCJPM2010210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0771da24190eb7f5eab9b60d2c420b8362ded67b6b67db4c4c2907fdc313b2e4. 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/TCJPM2010218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581bcace5bb271dc4592d1626c34cc7d0c091129d36fbb069908af4f01562d74. 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/TCJPM2010224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9618fbb33cf4069d87b9403a0725462fc565c511ca91bea79cde45dcdd2758e6. 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/TCJPM2010226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fa79f927653c2d6a763aa86c061c1e3430f955cc775d834be23c718bace76d. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZNWT2237836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc143c5bff65fc99e9f60b322390f5aa2a79c088a36884953f1a20cc39d42bc7a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:43:59Z), 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/QZNWT2237837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4719c116292833233db57e1312cf4bb8d6b00e16b227fab4cddb136f4a1d9703. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZNWT2237838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefab9c94a573a64b25b56901f625c6fdf411173fdafbffc63a8aadc1cf572120. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNWT2237840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1129beae1295e8545fae2aab031f02b1a1da8b7c782d3f3c38db2083fc627faa. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZHN32383451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484531113d0c03a94a8fd45999fc5f3d5eefa9c49f4be60e8857fb03bfad7e7f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:37:28Z), 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/QZHN32383452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82174bc8bc6d48506c284585ca6f2d15ae9df2c84c984ab05a075708e62f40ad. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZHN32383454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b45ea7b41949340846acc1ae027473cce87f7cf1096760b131fdc6e06631b4. 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/QZHN32383455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7577a8e3a6b0b0ab66621f1d6cc9d8b3e66c41dbdf55b3ab9612d1cfb97635e. 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/QZMEN2485220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b500e3ad1f19db9c67a317e345314e85753302ed6f1f44071ce2caebb49b917. 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/QZWFH2466570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f28560fe2493ca69a40fe45b67ab4745617f78c8996ffc1144334099167968. 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/QZWFH2466572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d1babeac599ed4fe095bcd8b4eab1fb90b7b2f2c679c68009f35ebf886a745. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTB62516883.