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 0x5b65d5fbcf8e8202eb067114edaee9152f86dddf3dfdf1655d801b38482eba6c. 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/ccb25c45-af22-4219-b643-c3a65e77c57a.json and https://artists.proofprofile.net/proofs/artist/ccb25c45-af22-4219-b643-c3a65e77c57a.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 0x5daf9d2627dddd55a962ef0f091bbdc58f99981ea22201d66e78af8a3218e820. 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/FR2X41764240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf8337b2de81eb2d9ddd45ff18f03a53910b406a39b4a145317ea0313fe4c07. 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/FR2X41764241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fe53f7efca2977598910d3b8f910d112c0e4298089b77ccf049d630fb8fcc2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR2X41764242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e6c348cf6435e5f4444cc043dce91f9191009a2da3655d0f7120e418e7c036. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR2X41764243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b09e630810ed7aa7df676f87077b8dc333443c7ea653dadc36a109d070de39. 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/FR2X41764244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d15977c0f1505eee8ecb1316553634e2f98d204673b6f1def64f72c6ae9e691. 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/FR2X41764245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b05b58d677677a527d59c3db15c3b3eda57374fa9a947209eb96496ea15278. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR2X41764246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4feaf0242d754c8f3924be31cff261215e877d0c1c503fa4a32bc8feb5097c. 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/FR2X41764247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4f1c59f175b20bf7ffa382fda8fcdbc8f0572e982542051bf8c07fc0c6b2eb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X41764248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0043063ddc50a744d7d272f4df8a2c36728411a263cf20c08a9d7a29e6021683. 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/FR2X41764249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087a82e0364c9481d9759240dacfc76155d49a169a407df4e906bb53b3107c76. 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/FR2X41764250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbeeae8c31bb08e5207cd2dc3dec925838dd1cf4ff6bb770a0a394363fa1841. 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/FR59R1719537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357ebfada48615b20b98935fd8820498b65436c242dbae3a2c7a6d40a02e3c86. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR59R1719538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c1a39245b043dfc8fb8842a8ed25503464cf0e4a5537909687b739166d0e85. 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/FR59R1719539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8956ee5aa73372a3c046a43358de91b5dbac58c6fce666860d49a95e175f0004. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR59R1719540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a336c5cb0adac17dc2b67be053889c16f18e3866e2828a9f7ec71a553360e1. 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/FR59R1719541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061da80d0a03f2db51d0f33dee7bc2eb0e2db4b72b04f367998dc81f82692c63. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR59R1719542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc337c237f50365efae0cc81dd73077135daee219e8da2defb026eaf95ba3602b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR59R1719543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366b0391df708d4f59ed4715e1966363085e00cbd874f149f0212af10a23dded. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R1719545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc233ec74885e48fa457b0dbf0806b42eeeb8dfeffffc190c75cd93a976c037fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR59R1719546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c56018eae5a67c23f13c251187ae6cdf0b9ff064a192cab0cf85bb15d8d97e. 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/FR96X1703803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daf9d2627dddd55a962ef0f091bbdc58f99981ea22201d66e78af8a3218e820. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR2X41764240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc571365b767bf5a4c3890be0d337870282dfdc0c2c63364749ca627e677743. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X41841865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5cddfd44e9cd13ecec3102a57120c2a75b0b46fefbda436cf0427a8b927b65. 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/FR2X41841867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b09e630810ed7aa7df676f87077b8dc333443c7ea653dadc36a109d070de39. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR2X41764244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf8337b2de81eb2d9ddd45ff18f03a53910b406a39b4a145317ea0313fe4c07. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR2X41764241.