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 0x7b27895773ce00a51ae90156583f5edb9f0db0e09233e272b2939ed45be91aa7. 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/0b624b3b-3bbf-4af4-ba8e-f7438eb8875f.json and https://artists.proofprofile.net/proofs/artist/0b624b3b-3bbf-4af4-ba8e-f7438eb8875f.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 0x25f9816ee4611af37bd5b8658f28a088b1e2a28c6236d90eeaca2dddf7563a78. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZVEM2591245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf133505a77089400f2d8f8cb11c90a9948a13fa3a3c232668a2abfa3c5ceabba. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:01:52Z), 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/QZVEM2591247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3726d8b84cfec7dfa74d47c74b691893fb06ec839c8551eb9bc6debcb02b0f1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:59:44Z), 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/QZVEM2591248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bec7691ac8531f970052ae998dd29c435d5058af8e5ba4117536021e4ce38d9. 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/QZVEM2591249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34ab58bbd99327814a035ed120487a286696776c1d75e9dfed061ab773c6c8b. 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/QZVEM2591250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c2640af6012eaf04c92605ac5bd12557c6b4823981271a15fdd51979384708. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZVEM2591251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dff6662bfad887dc5496d2a1ebfefa2cdca97889a5eb8d36f5e2579d01ce16. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:08Z), 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/QZVEM2591252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cb14b35b020b0f9f5b7a4e5558c1ebb08e84faf8a4c0aa259fcb193bcd9622. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZVEM2591253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2534c476c60aaf5a0ae2a141bd068c6798cd7d505c0edf60e5a04fc8ea20d9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:28Z), 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/QZVEM2591254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080576bb93f537e49618f26ea10132a3791f5dad6179cb7d0265f7bdf21b210b. 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/QZVEM2591255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d1f0f3179e50fc36d43255ad79ecc14145c3376de17e59f4ef69dd6411af19. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZVEM2591256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c128fc761c7c75044bca0e09a99b6beccc7fe2da9f8e359a833d96ddcd1d289. 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/QZVEM2591257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef8fa9d12e0661ac190df9be2df5d59b567fcc40778ed229e1257d0c5fd4293. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZVEM2591258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054f1698143693a5818d7d8c275bb6a885182f9dbd8da5ed90d3acff821cb11b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZVEM2591259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa86a9d1ec6648e6dc5b537057d9721e8a3c2a5eaed19221abc9ffdaec8ea8fc. 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/QZVEM2591260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccfe0aa0fd509e173be7092760f7ffe92ebdfc74215550c4cba155a0f7cce75. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZVEM2591261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee760b75f2075f9db3eed96a2148c41fcfe2ac0aeab7456d3303644c006a1c1e. 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/QZVEM2591262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecce7c0d59e7ced303cd1340f7137e8dab746f0c0156796f114aefc53a700dec. 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/QZVEM2591263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3e15699d4804cb56db086173a48b5b51a593703d70c0badf9e334215b1668a. 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/QZVEM2591264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcd3b8c4e5bb9a45132e79841fa05b65b077ed78a8a252a7e15b424454bc843. 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/QZVEM2591265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48db7895f27c776db9e5155daea2c316152a4ab020f74cfd7e94125f0b6362d4. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZVEM2591266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6356b1c977692ea2d811da3df0ecd7f7a36437a300b96b63a82622a1936a065d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZVEM2591267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce09eef76cf1ee3921851e0bea30d9ce54659b4f145ea1e805563badf64be4e4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZVEM2591268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef3c41a87a3c3ac861245ecd1916347d67c8d42927510f28ffec87f06c9831e. 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/QZVEM2591269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dc17d9bc9b043fe55a68de1e4300f9adb86b44e32bd5dbbcd4385a0c8418ed. 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/QZVEM2591270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52da2a65bf06a1e0d885c8286dc10c84b10ab6fe4e8953c95a7143f4f0e98ff. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZVEM2591271.
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