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 0x871da29e99ed107804deaf6344e9bdd1ce940bab7111611f5d4fc790bee6c35b. 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/46668749-430a-42c1-ac11-89e9bb661d05.json and https://artists.proofprofile.net/proofs/artist/46668749-430a-42c1-ac11-89e9bb661d05.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 0x47b2a090ecde6e59f28e846ee70ef75a139f3a452bda66d65d6b3b777849f1fa. 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/QZCE61857307.
Bound Blade - Sidewalks and Skeletons Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046ee14305a92fcc50ee07dc31ea52751738d8a144156f41e3bba32bec05b694. 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/QZCE61857308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2600db28c1674d5f5fc74b989daed7b27927139265c1966fbf157c4282dc40. 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/QZCE61857351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd04fed39d7682214a60523d700ca9d574fd49f7753741966d3424678a0d5d1. 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/QZCE61856261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12db66fded034a88d5c8fa80b2e594f750270605921e190c600379c4d4f6fdaa. 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/QZCE61854618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33816a26003bf70f75b4282cbac785dd83329c33b170950d431a73336de7ec05. 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/QZES61838843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c8e07cb653af6dd7753a897877acd0f44cb2bb5dfc0f604cb12c7fc5b9d861. 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/QZES61838845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecf1ad19c3f9c515af8adfe75c7d4254fee4a2bd7df67512d2dd5631abba98c. 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/QZES61838846.
Black Peach - Sidewalks and Skeletons Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a1a2dd4aacc123082232142e941a24ad30922ddc40c7186d8c1361d2714f37. 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/QZES61838847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4786019f50849aa752f11591ac4d5f4181f9e15aa6c0e196d5783b4a9ed4f544. 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/QZES61838850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cf9ea7bc73fa779d2365a929c86e2785324c22a4d38b80c0d23ba26f9af2d9. 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/QZES61838851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0769800d903e2dc625c2c8613334533b6007ce2c5f8ce8c89109e5fde9789a88. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZES61838844.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd917a31dfda3bd082867a0cbc969c8ef98220a89f26aebde33e1387ccf4f3489. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZES61838849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eea4c25e38f522c714c5139c4bd08b8a2c4a5c703cc3d4d8e99065bd6967d76. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZES61838852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f84f375466eb00e397c5aca69df9e070ada1735f19c5fbbc16940abf6ef736b. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZFZ61986757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1093dbee85ab30ab988138b5130bade71824e08d4752340eeda3d6fed7fbbde. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:55Z), 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/QZMEN2180568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f7025eeb8159758e279849e6c0b7ab39bae367c8a5d6ab4a7fd7fb0d5b22ef. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZPLR2188420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e20b243e64ba9fe468844884fe00f2fd307769f1f332b222d3a6c5da628eb0e. 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/QZRP42431975.