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 0x33dbe9b50b0cae54f3aea93b3ac23a0f0d2ae8a8509a6a1e4a31875495d997fc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b71ddf7-6c52-43ed-9753-8c1c6501526a.json and https://artists.proofprofile.net/proofs/artist/5b71ddf7-6c52-43ed-9753-8c1c6501526a.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 0xea57089b90f4892005590d7a3a3919757ccfb2cd0eaa661b57160a5773895e7b. 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/INS180803227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f54cea852e06f94fd9fbd89fa8cb3e25fad2c1756889bd0acf51c258c98b2. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:05:20Z), 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/INS180803228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5e4304bf36f7462999b9fec253294acf9806d397f8cb00f8f651406f9c3b80. 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/INS180803229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e79cee246fa299d42a2686edd3c7fb02c93024ef94cd3352e53988022bd9d3. 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/INS180803230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bae8660709412b16518bfb87be784539f2580fdbaf7777052c0815102bf1d67. 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/INS180803231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8955fa8971eb647cdcc464dabde5041ed1bed50dba0be00bf0b3d4df6ede17. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/INS180803232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc80fb3d812b18cce68d96b79e9a2ba4b9f8938adf73df25ccf392ad5ff3b3b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:50:24Z), 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/IND301300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1e4873ba58b4688e3fa3d890ef8d5e090ec5563dc4c1aa1c78430be6c2854b. 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/IND301300344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b361efc512b911ca7ff8f51ba6bbdf7150f059f30cdc2d308c849c9cad011f. 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/IND301300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22896a72d577e402cb705e848d2308e26be6e4e2fa237ee15a5d61f62809a54. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:17:42Z), 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/IND301300729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a61c15bbeab8ee8e6d2593395bdbde5ec29eb986f34941dda49e9b99353f99. 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/IND301300733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07e9e24b3038e8548f5856ffdb0c73043e976ef69d62db242c2227b19e32a64. 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/IND301300833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553b23ada80c2f7c35fb379d92d4f5a05c2f8091b41ed8680eba4d806414c203. 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/IND301300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926cbd036e4e076c7fb7a57a1c0a8cf94aeab3bf106b5c854e55f752d3cb6cb7. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:30:49Z), 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/IND301300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73d71d8c07b6295b3dbf379adbd8c75c03f76a0d6e7fcce7c182722184f03fe. 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/IND301300260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1d690c68f74f111c72c3066ce16724c72ce6d8749df4e920561bff5decd974. 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/INS402004045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd80560b3f47cddd90c88b7bf29315cbd688f1dffee292c15ae6442afd0f0443. 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/INS402004048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e693dadcb51806fae8885a3d0100685d6bf1bb75379beace6cbebd43f7ce6ae. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/INL232552854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bdf14fdc50f335eb37bffac0a3a340e62ba8b00b582c4b6f807fa5123c6c7a. 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/ING121200336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978fd6f9af7b157219acbef3205b921437f1c2e56f634d29e04e59639ef7a312. 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/DGA082481693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176aba5a81d46fda2f37fe686c74e35b526ca14d2e1c48fd41a0e85817c832f1. 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/TCAGY2321107.