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 0x34f3520a8a88f5aa3c78e3c6ea63a12e4cbfdc665e0ac63cd4d125b3096eb9ff. 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/4b6254cb-4205-478e-ac8d-ddccc101700f.json and https://artists.proofprofile.net/proofs/artist/4b6254cb-4205-478e-ac8d-ddccc101700f.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 0xbf6f2b23c769f9dd49f309219fc6836a6ff10bfee6e5cf4a6fe066a301a34c95. 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/SE3SV1400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3deafce4f4d59ac940a9f0100f03ce4bb06cceb11579f4b099c75ac1fdd909. 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/SE3SV1700102.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a52174a34252461a8dc40123d2907848d0f9ead3aca83d3d431b7626b5462e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE3SV1800302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa8dbb92161601c7b1a2e56cec0bb23d30dcde042daa607d4d7b3b4f3021c08. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:47Z), 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/SE3SV1800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e6dd3048a07735fb920ba7e2f2d308d53826e2b1fad20ccb6f4a3c7dfc7a99. 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/SE3SV2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dc4390686e5b177dce99f47d90d52ca4227562b88ee8b3a0c44b5a3342a9ed. 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/SE3SV2100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d87b4ac9c48f446c464afbf939f14cdf94a46e0b6bdd6033ae4fde2c97183e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE3SV2200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb36b02427a9cefa0dfbef8a801f259f04a5329dbff44335d82b535c1817adde. 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/SE3SV2200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27734d9f6b030df35909b9760943ef387899b6826d7d5c6fde22c3288981d0c4. 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/SE3SV2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3029a56a87c5a210deb8c634c3cc55682d9bea3a1ca0e7dbcd9592b90c046fad. 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/SE3SV1800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3029a56a87c5a210deb8c634c3cc55682d9bea3a1ca0e7dbcd9592b90c046fad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE3SV1800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3029a56a87c5a210deb8c634c3cc55682d9bea3a1ca0e7dbcd9592b90c046fad. 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/SE3SV1800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3deafce4f4d59ac940a9f0100f03ce4bb06cceb11579f4b099c75ac1fdd909. 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/SE3SV1700102.