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 0xe702f987e07f6dd0ffbd59aec5aa9e05cc4790a8d34d192cf818c0debcf7c01a. 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/8d578e2b-54a5-404d-89ac-90e6b31ed998.json and https://artists.proofprofile.net/proofs/artist/8d578e2b-54a5-404d-89ac-90e6b31ed998.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 0x66491255ef9ed9112c200d29438a40280943428a8ba4daa28cb5ed26de352041. 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/FR59R1661963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d6a219b6be602acc56e42b8839fcf57cdd3e6f523ae033c5d67a6d9fb77424. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:19:42Z), 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/FR59R1660929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3e6b481cc87bb4b6b2621dcda5d97708033aad638cb22f58a12263ca08d016. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR59R1661967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ee3eca87d4d733429ce76ad6447a8add44fd28def4655a48c2b87ddf1b6988. 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/FRX871565938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a41ee14b69a0c0a64d22309265c35d96d2d7b55cbeeaa4987e2f2e0ec63e60. 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/DEVY81700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f03406a8fd6b13d3140e2f6d7529fcfbc2f3c22993ea191fe0d0236c060c4f6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEVY81700407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed61308728ccead953c88676943f86c7928659266bcc626ae17724dd7004ff4. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEA621800794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966ba4eb5595e2acfbd590d9f59eb7fc5de1f8340df4fb5cabfa5193be979dcb. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:20:12Z), 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/DEA621900268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832d54f9a5663c736845bff85654eec22b57dfc805c0cd9449310e468ee432e3. 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/DEA621900278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d41cd4cb87b97ad8704e388d0290f78a564c7be2331b9997578e2dea4f44c9. 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/DEA622000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b093b9ed629d78c6d820b74b4c3ca459650daa0761611569d49ec3575649cf. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEVY82000838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6425295bd6da6b2c8354c57857aa274003ca721c27735632f08f18ac6e35a6. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:06:27Z), 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/DEVY82300198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e7564689d823c2a982b131210901f856e3cb02ceab0759d78e8d6b572e7656. 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/DEVY82300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf480ce1ddc11b85673f69c64da91ecb129d25c47cd4d066aa205919fba8ced3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:17Z), 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/DEVY82300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a0f3e3488cb64200ea74a33289eeb23329b1311027f7d896e0ce25c6e952f9. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:07:17Z), 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/DEVY82300378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb28f96f314432ca899756db7d704e2af01993b294aeb591321fee6cd7b48af3. 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/DEVY82400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8135df417e6ed780f94c0ef6c30b4393204b55f2036018ab8ef7aa68757f748. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEVY82400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52f09d8fa0138aaa7ad44dd1bfd90311c5f1a760465c0f8ddfff62a981cf0b5. 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/DEVY82400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3efc1ef4326eefb8dc0e66f32619ede1e4ea97ae707932441d15e3c27e55c9a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEVY82400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb28f96f314432ca899756db7d704e2af01993b294aeb591321fee6cd7b48af3. 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/DEVY82400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7b9655c8f5b8dd47455f66fe995be08bc7dc13240f05af01344839fcaa8493. 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/DEVY82400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9870957b93e7ef8b17666158b096bf21180c09be9c819e9060488fc83004f144. 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/FR59R1827979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9870957b93e7ef8b17666158b096bf21180c09be9c819e9060488fc83004f144. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR59R1827979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907235dcde36995c04d1501c29eeb8806a53880688dd7387561fdbc333781d4a. 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/DEVY82200048.