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 0x55c295e390745fa0d87f926b000daaf546bbb74580c6b16a60ef62c8c09bbce7. 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/40617702-a1f8-42cf-a798-f93d001f0ced.json and https://artists.proofprofile.net/proofs/artist/40617702-a1f8-42cf-a798-f93d001f0ced.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 0x0932b10ed5a831fe422510a2eed062f5d6208eb8c6eab67a95431863afda9609. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:20Z), 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/QZGLM1993603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d855b07d81bf8b315722e22ca20b059eb38d79e376e0c991e693d1cca55573a. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZGLS1929043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b3b55176054913bc05b7aa59b7c5c91826de0c4313c6d31644828a7be81f7c. 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/CAN112000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e095655269dc2120f7ffa0d16637aba84b1cdf4fb7c68a9caaed7c6618e5ebe. 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/CAN112000466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bec5b7edd9a1e9a14241f1ca2198c00f9abc43248737a66d49494e77c8c0ebd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:39Z), 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/CAN112000467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b3b55176054913bc05b7aa59b7c5c91826de0c4313c6d31644828a7be81f7c. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/CAN112000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d17417ac7beebae3936d05a8abdb515a69d4936748e5dea9b0b6ebd1e3caa4. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CAN112000435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e095655269dc2120f7ffa0d16637aba84b1cdf4fb7c68a9caaed7c6618e5ebe. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CAN112000466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bec5b7edd9a1e9a14241f1ca2198c00f9abc43248737a66d49494e77c8c0ebd. 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/CAN112000467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21c106555800d4fd59ac9744943d71b679045a69601296b1ad8a48199682140. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:31:27Z), 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/CAN112000468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb89313497bd9402d218c0cb8c850d8b56ee0071e2bded66980c9b9052ec99af. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:36:52Z), 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/CAN112100279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2bb350471f832a12e2db98d49fc2469d7205638ca12d3ac22e23297f9ced24. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAN112100773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca52e9029acc594611d260b51feb98f8f54238f5765547a9c08df52a55afd91f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/CAN112200449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b5a1938e01acb585bb49d786257bb1eaee9a65c501798088626ab71d7bce5a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:28:13Z), 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/CAN112200728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe4a2a168a8262ee9ca216a9851f0f17c41f194c3703c214f1e345ade1640e1. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:41:41Z), 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/USA2P2314123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab97dcfc1680967b6dfdf3c2a12f0e976326a8fd81ea1761127a0fa48dd447. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA2P2329445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840a354bfa209e9f7d40eb741a6e1b0665a26b668cc5cafeb50cc30d74865f96. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA2P2422177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea247832a6df0bc41982f6e356ee6ed7c2295f0e9ebcf0dc3a6f939cdfd28b2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USA2P2422180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5707e345a10b9d716feabffdff41c0330bdd2a2eb0109f074a96e678d7d5f103. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USA2P2403148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b575b99d3518eb590ee90ab2dab8031f81f244ddcad0bc29c6ab09b409e469. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:06:53Z), 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/USA2P2456357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e79e64c41e3072732f8c6eb53ef35a838357e82e5384ac10393f7c31a27fe5. Chain 2 (Bitcoin): anchored in block 957957 (2026-07-14T05:10:34Z), 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/QZPEW2508183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2251ca6a1f2a2298acc7a3441274dbc2cc04480c6ca7ab41da9ac6ce56b2908. 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/TCAJN2560838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe9364c722cf96bf2ca4d8117e2eefd54fd482f69933a99f4b8bd15f002d7e3. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:48:33Z), 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/TCAJN2560860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea532d9538d1ada99fec54022711215cc7c97509eff8dd13c29f517880cfd1c. 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/TCAJN2560868.