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 0xedb7063a2ba93d00a13bd5bd53eb62f93ef4bc76f993b77b8d6caa3010450e55. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a1cd59a-6568-4541-9877-1169ebc5295e.json and https://artists.proofprofile.net/proofs/artist/6a1cd59a-6568-4541-9877-1169ebc5295e.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 0x4126b00bfcdddf34b1854ee5d1044179ef54fb42badbfd6c4a51a5bbe8c1c461. 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/CACWV2092051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2fc2695ab903ee8f0fdcb8c0654738b17a6f7e5809acae16737e085474100b. 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/CAHQJ2117643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6a038aa1d88fb758e2f3fa650335637a3c3a5a81faf3bf454eda83dae7236f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CAHQJ2117645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1970b46ff5a0eff09608609ce351cb9603a3fa400398141e5f9cc7af3fc36255. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:44:21Z), 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/CAHQJ2117647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef0a5ef7eff1f847d1b42383724be76450cc0ea5ef5fe1aa5eabfcd57a97b59. 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/CAENV2193516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee6de1aeb8f36cdc5add41e688326933a18024f07d29280251c722356917f8d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CAENV2193515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70d20b2302c0886dd1c8fc7391c3cfeeb600369efab1fcec6fd9e3889adfe5b. 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/CACWV2224532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb65e605f45890ae62e4598a22e2e54b88183d185e80e2187b8a8f9e437760f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAHQJ2220037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08dd87c876a0d5c0543567526496235ee3a785c486ae593aad2b28d2f339bfd. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/CAHQJ2262968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752a3d84432af450fe34fbe8bb8259787c9df10c7c61632d8c8d2d1c8fba12e7. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/CAENV2240194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d1985e55d4f3b83dccb03988dd20071382328ce684ae6d130dd98696ad5023. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CAHQJ2359614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7b78c625bfc14898b6626d347a36602accbc0cc467b56dc45cb63332d5298a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CACWV2350488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d79e2dd2ad81fc8947b0e172cd7cd8c4635d6d56db49b1e769fd5e6580aa47. 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/CACWV2350491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd7eb9137a2061b8348af736a016c493053b7f251acb2fcb8c2cb945c778073. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:46:04Z), 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/CAGOO2319226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f19da34c3d73dcaf37995b5804f0da1b23db7d7300e0b52b4bfdb60a2ab59fc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CAHQJ2483902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050b3c11b8839e71a3cf0db77e070e86a83c03ac323ca5dec39b1ad2b27264d1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CACWV2553127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc511e335e0522973ee811919d0c6663658ba390657228e977927b170d394429f. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:19:16Z), 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/CACWV2553131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10fa5411e7917e6fb97aac3f8213fb369ce8501d16fb2ce9027f7ad0e552315. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CACWV2553128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb673abd8c8fdf00c3171cae455f8a5e1570d74a5a20b81da872ada38402edab. 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/CACWV2553129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269c5a8d5ac11726e59c5b007af231f1df213bbc8ea7bf67a73525ad9e1c5f24. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CACWV2553130.