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 0xac057b325072e3fb0c2a5759a14d261a6b2e940d42a48cd2c5770f55d734310c. 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/f10768b8-f53d-4745-8db8-e44c0b38bccb.json and https://artists.proofprofile.net/proofs/artist/f10768b8-f53d-4745-8db8-e44c0b38bccb.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 0x63400743a749add4082d60db6c22cb226facd7ce37fced687105df441f7b35c1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:53Z), 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/GB6LY1600410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8709b7ccecc33844c5c9b6a4a5f43979532d845fcaa26608ba78e71d2dcaf5f7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB6LY1600550.
Everything We Talked About (feat. Clementine Douglas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66cf14b6d1d7c0eb52bac410f31741fb20d10320b2d0bfd14b9ec3546b0874f. 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/UKN6K2100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d19763f55f61df3fa95f5f22c77e68fbe017a4c2717cf52b0e4d7cb1770155. 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/UKN6K2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153c9a1499550a67836ffdafd3db220c653237e1c6c985387f898fe20ef31b93. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:30:40Z), 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/GB6LY1600861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26ce2d05dc54a5c77f15c182e9052c8e93cec99b1060d1a113028f9bd9f67c5. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GB6LY1600961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af0af557f7994826c3299a8653eccf1590867a7e34e1930f52aeaa97ba04ffe. 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/NLF712208406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09e96193d84f3bb66df9ce3e8044fe08ff6f7fd7a73ba4526d6a242f53fa2e3. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/NLF712209464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b60ce2c3b6fc94fd4ff90717544804aa110f601d10ed86894ce1b4fef0ec941. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLF712300493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699e754e64d826b3962a66bd2951c763caf7ac5f3715f63675af4539f80fc5ef. 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/NLF712300492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0135d9e56be51070cc15c2e3d4e4afab55cbd5b61ddc4e18caa13c54d97c685e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/NLF712301805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c56b24d6569b3773fd5533d0213be0e10b6abc9c529c1a8ffd27ef66574d4b2. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/NLF712305752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb61774d4e64618e945af3b31487f7bae3db67a15b9a1ff6c2a3c457ec56afa4. 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/QMFME2346957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee858813c13257b652eca10076b854ddde9b400bc887a8f964ff934918c65618. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMFMG2366433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd372c482d2c5aa76c6d584d1151cb2341aea5b2de7a2d44338caa44af43168a0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GB6LY1601375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8b39cb159a4e4bf3a76d2a30f42df3b668b3ca7ebb08c972c01ebb7eb59a00. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T11:00:12Z), 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/QM7282451211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e010553cb5319319661b6509aa3601d40f473f4d5e92229aa55d16bc8cb91f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM7282451221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e323de3f78640462fe2ab7a049019c814b74b5c574c7ec94bdfa14ff34f45b. 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/NLF712408911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b0a3566f1ead7b9e3f87ce3ba6f5aa834d56723836d14b2cf1d195b7f4a90f. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:36:36Z), 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/NLF712500968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7270120b1ac4587476cec45d03663b68f97401e2db6048a28a6e9c2492b638b1. 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/NLF712502739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a81f05bdc8eeb71383a182dcb69709187c3e682c5c6395426370847769f950. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBJAJ2101146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21211314a02ba95d197006a71e8d304b29f4cf33c8350b7c5326710d106706f2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBJAJ2101147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7538dc2795dcc85fbba0a01aa3bcf2aaffbea1494ddc4a8035f57767321aab7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBJAJ2101148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a3a16d22342a5f0eb502827f2d557d0c86d6f1c42d968d450e1c1ac74e2322. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBJAJ2101149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b37572e419d76ac3d87467cdcb548728c7aec9b7db6b133fa73e80bc773796. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEWA2205200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b37572e419d76ac3d87467cdcb548728c7aec9b7db6b133fa73e80bc773796. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEWA2205200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9351775a171620408b967633e9cde450742337a49349e59bc041a8128bc7078a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB6LY1600549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cb13ce09fdd1d2a82689bc2130d39d79974bfd44ee08a5c8749d77ea0e30f2. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBEWA2205201.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771b8458505d692a221d645b0687752b6a24d57a330b4869f933bc9fb61655cd. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBEWA2304377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa123283ad3d20b94683292c3284896b4ebef7cbb9805e92d708999a590f868. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBEWA2205425.