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 0xca0e187a60037f548422a73aef106ba9e7a37f2eb9f0357f975edab5d0f8bd83. 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/6fc7a639-ad38-4fb9-bcb2-038c8b0069ac.json and https://artists.proofprofile.net/proofs/artist/6fc7a639-ad38-4fb9-bcb2-038c8b0069ac.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 0x2dce3dcfa11891b31c181ffafc27a10898f61a7d81980f3a567fee7b339c4804. 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/QZTAW2253947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f109df0c8acfccfce1048e00dcf0de751b8e4e5fc8ef877557584107ba6811. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTB82213702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092f7b5e96d76e3b9f12132a00e818f9e45798a9b43b6de42ff659ae3e716045. 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/QZTB82213703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd755ab81c7aff300dc6d1a2a30d8e1abeb3898ba2994d7db364ee2376ececf. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/QZFZ62385051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9616b5dc74b084e3abd28018612535a9cd54b503ddb7da996fa3c1c48e342a1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6J2352591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a5627838b4deb6e7e4a80654d552430867342acba94d4a0a0ce2e6fd327a4f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:39:15Z), 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/QZNWZ2303597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e798769e2eb2d710d645288c203f253a74e3225a0eee641c2695f85b6f8546. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAX2385492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a70e5a0a5e1d6d45a9803019b27753abe47d5e1dcbee05edb8547de8efc19a5. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZTBE2306822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81049766ac60e31552750c51ed8ddf25d368462c9b6a0a30d93fa7ec57c0d6b1. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFZ32450104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b5c15a83874d995ef82d6f81586957a21f5b3e95c46dc9c774ca73c2598d40. 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/QZFZ32450106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5983308967e06915568b7a2ca2b62d6ee8997a321c18f0f799cd710d51162bf. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZFZ32450107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f73478b8493631097cd53e875ded911a6bbc052fa512a8dd0550a7d2db8ac5. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZES62485408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58ed0ddb8a1a3eddd32d27f77cfcbefd08dd6dd82a925fbf9a0ec64064ec7cd. 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/QZK6N2441850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58ed0ddb8a1a3eddd32d27f77cfcbefd08dd6dd82a925fbf9a0ec64064ec7cd. 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/QZK6N2441850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866002433c377c9d92a043e480e4f95662bd127d565a01d126e16cab70546c45. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:16Z), 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/QZPLR2435370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2e21ecf9b8857a4a5d5e72f54a437def0dfdc5568144205c2fcf3fbe699456. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZPLR2435372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8a5aec60e56a8c9c4b7b66ab143ad377183b237c19b74cb4d20640f305df69. 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/QZTAZ2481303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd755ab81c7aff300dc6d1a2a30d8e1abeb3898ba2994d7db364ee2376ececf. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZFZ62385051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fad1a9b33f93e9bec1c5d20a8359c29c28ee98c47b87e525634d2f3e4d1a24. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZTAZ2481306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60bed42af8969c4fc601c8c199299eb375445441bd96e9d4b505ead6ffa8aab. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTAZ2481305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b5c15a83874d995ef82d6f81586957a21f5b3e95c46dc9c774ca73c2598d40. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZFZ32450106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bb62e4d478733c77880d35aa31683ea4867f928968ff4cb867c2278a82e1c0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:49:14Z), 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/QZTAZ2481307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed871208e5e122727675477ca395b07aa8832c3d46da347070ee1946acc28f5a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZPLR2435371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f73478b8493631097cd53e875ded911a6bbc052fa512a8dd0550a7d2db8ac5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZES62485408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0d44158418e5e3bab46a47eb5a926040ec0b03d3348983e48d840a281bdee9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTAZ2481308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aa859fe89ab614ff41a48d4ad7984f92163017d2d89aa63431712be63bdc5c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAZ2481304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8a5aec60e56a8c9c4b7b66ab143ad377183b237c19b74cb4d20640f305df69. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTAZ2481303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8a5aec60e56a8c9c4b7b66ab143ad377183b237c19b74cb4d20640f305df69. 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/QZTAZ2481303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aa859fe89ab614ff41a48d4ad7984f92163017d2d89aa63431712be63bdc5c. 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/QZTAZ2481304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e113bebfb5ddfee9f837ec8fae2fc11480861e1c1cf2e050cba85ec2f67c0e. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZFZ42522993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5e0b0ad9a308a66d4f8f0aa890084b428c8628e8034f7d5e798e565e25603c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFZ42522994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fe1c82220694e108ff171bbe0c60085076c9698f178d48c29cd0642b437fd7. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZK6Q2543095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9479789182a0d472e6ed76de83f757495b2f157bf0fed7c1782b542ca91cba53. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:01:47Z), 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/QZNWQ2572407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecb117bbf712eb5e07b7f7f2d8780076a9b8f2a2fccc9d338d669bac720acf5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZZ7X2543791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96eba3bb656de9434aef0c3024e2407392a50f21e9b7a12e56670267cd29438. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7X2543792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a9bec2db6ba7fdfb053bb6d40fc1eebac83d6f5bd27f19a435877a806f5cdd. 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/QZZ7X2543794.