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 0xa5ca7cc1609b96e80b2b8f9ac8930ebfecc55f2af95c9d64a0da990cc87721ab. 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/66c8c105-078b-42a5-83db-978feccbce26.json and https://artists.proofprofile.net/proofs/artist/66c8c105-078b-42a5-83db-978feccbce26.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 0x3e1dd360ba1de53c28de5ca1e23e3bf853779b9b18ed52264577edf7d8808bb5. 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/UKW3Z2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61086c09eabe3d8255de3e1aa87cc613f5f02bd35de368f710400cf0725a0eff. 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/UKW3Z2304114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3238ab1344f408b4628efa7166e72834857ae979c02d31d070bdae821305c8f2. 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/AUBEC2029622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fab9f896b27ff738a87a68344c03134103fdc27be448982e145edd9ea2f101. 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/AUBEC2029638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dde4ec550480853736549667153ed11cd12ef6ff305f4a1b2f2f0b1d935720. 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/AUBEC2029641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb821c8b4399014faebb121d795b63131505c37458bb5b2f38c11fe931d701f15. 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/AUBEC2029651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf544ec2dc743f502223bf7032595bacafabe742ab0b1ffa2bd4bb84109b32628. 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/DGA092402218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675ae2484acd5dec04ac655ef78d733c602d11b736438da07ef7ec620d10f6cf. 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/QM6P42472704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf115871cafaa3edce4ee7fecc137413ab2e75176f0ab255acadffdb2759c9bad. 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/UKZGC2404356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe625386ea0db850604def10c93413f74ab28fbd2cff67e402a7d24cc5c3da08c. 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/UKW3Z2401670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fadc40416f1fd39fa0782969d9efce2ca41980d5ec12b47e1eafe11bf9a170d. 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/QZK6G2492897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4170eccc5a80e104449d6ff6c6573d89de882638cce840f0fb8767abd2166c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ72479297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aed26b4e905a77b0277c6013f6a23ffb5ea23c085fcec56fdbe9755c0b166c. 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/QZTAU2323964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67325607771f65a232b8ae4529a0240ba6d674c08bd6a8041731beb8365768e. 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/FRX452338992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510bdc879d47867e8b0fab7032adf3f6143417588f77803395f66c733f2cac76. 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/USANG2298753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cecd0d5e465b92e9b3b933410123d01487e9b5717c691804d21fadfd8b7be30. 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/USANG2298599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49b3bd622ce6ab880a85f3fd28788b29a27d163d71079532e06a02d9d58901e. 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/USANG2298600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f530ae5362b0fae6ae2b1abd529dd19bb6a8170fd320d5a97203654c2b8cbc. 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/USANG2298602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3263e12bd1ddb98c6cd9eaa8e53a2ad88b003edfb78dd79e26b80c74f9709c4b. 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/QZN882394964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5fdecfae7b4327682fd9fe7f6a695bd657c23d3ae79d958e0a5216e9e16424. 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/AUBEC2239470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8077ee2c82c2cf1afc0e4974d6ecd17b2d9ee62254b0fd97a5f6619b9822f9a1. 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/US3DF2297320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636c83755c699300f72e46c52c91fdeb891e3816dcf21c2a8a4c066709999489. 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/US3DF2297317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cebd6832045d629790d69e7bb364457d768582d50640fa680eb91f2d0a7f67. 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/US3DF2297314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63959de5bdc772f00ff8c49b6addc23380be976696db19f44bf25adae0da7afb. 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/US3DF2297318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60721c9645cda6ee73ecb8913c7a5ec4b5b2349f839d8ba0e272b199bec46058. 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/US3DF2297316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5818ca3e33d0b0a0cc35635ef88e98bed1d0339c15f4218b24d338cfbe38eb7. 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/TLREW2203566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ccc0e1d2f6362ec3302e505cb6c6b31358a8c8e534e87a1d239a7f1cad2479. 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/QZN882203015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaa50bc46d5ae146bc99db7b3aea5acb60207f25d2f3215a002bd7d2cc34a78. 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/US3DF2206949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e8086e0bb5f0002eaf08905b12c7b31f9bf78f2c3237aa31c5fad240daf67c. 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/AUBEC2046717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3350157df4b670f88934291bbd1fe87cb016744c3df5ed14e56e58a1ed733d97. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/AUBEC2045924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0790d6290aabdf85b11eb43d0f04811e7cd7b09bf39d54f3eac04fe824a2f584. 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/QM3DF2159097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd5ec2e5c2a5f838067a644fbd486249e4d6a6899063f17ef989c07fbbb2103. 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/GX3Q92015881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edb886103c61fcacfd875b316239cc695c9afc44f5282d94e5e7f7fc572d71c. 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/GX3Q92017390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799a71c7391eff3f4f3ea5667a2d0f2da34c7ceb8ab1d11fb61d794219f55dbe. 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/GX3Q92015885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d032591cfe6e310d89e1799443effb7ca3a8df42bac80691c6b8c6438d862ae. 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/GX3Q92017391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d4d485f718a4be03330f4bdb60e53a4eb30d4bf36405ccdcc5f32ef81effbd. 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/GX3Q92015891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b30bb37d2e2af2623f947de8077147db0bd3c1c9a99144fbaacb0a1f3e264a. 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/NLX9G2400440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb201e1f5dcc0af1f9e6373a435ba6e303f1a93b213f908df35f338e2502920f6. 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/UKZGC2406726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf115871cafaa3edce4ee7fecc137413ab2e75176f0ab255acadffdb2759c9bad. 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/UKZGC2404356.