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 0x3d73fbae704f6ffe5e314f8de909cfbfe6f46ad13ec2adad9d46cb52e3880689. 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/2394984f-a167-4f98-9a32-a1a8dbee7fbd.json and https://artists.proofprofile.net/proofs/artist/2394984f-a167-4f98-9a32-a1a8dbee7fbd.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 0x0ad5c0bed48d7a6acfbd58ab8cf8459b23bd1726ef83ed64111a59a559a97d15. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QMEZE1812933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd4c0e861dd92296f74c6936149946bd754c6465517015fc3e938352abadc81. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMEZE1812934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f0ff024a2113f30eab6f3a3b5221f2579fcf005adb521bb204881de837f0bc. 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/QMEZE1812935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483bbaad7a706a70e41abba8a15525b086e8f63fd7b3b77af2cb3a1bc6587bbf. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QMEZE1812937.
Jubileo Punk (Viva el Punk Vivo o Muerto) [25 Años de Punk]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8288c061e45e551b392eeda4bdbeb2a0f73c561e1545f92cdf5202db099a391. 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/FR59R1995765.
Redegeneración: Más Kabrones Que Bonitos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4221e868f35cbb0d6dd917004eda632e0fb46669ff4cd9f3b07a2674bd3536b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FR6V82452606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40c87e99332275dd2f75cde3c4999ff051e0abc26124f8445ce4dd2e45ad2c2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:14Z), 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/FR6V82452607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0bb59dc17bae568ec730ca9ef510de66be74b1db9e52c68230042ca8cbd12a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:12Z), 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/FR6V82452608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b07225729c97c29f0b94d4c4876cfbee5ec51c3b52790ff8af4600aaa42fdcf. 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/FR6V82452613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3f930db15c80e7fc953869963b72674cb038a518189cbc31a8408b2b8c4913. 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/FR6V82585377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc485c8e8dc824a9777fc2a31f423de98f532d97e15005ebfbab160f58ca0e67d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR2X41508485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf1382d8ba4508c5b36a1f598848683704a204c66b50a3f7decf7a08d5dd39a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWY2450414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc034b0642d8a1eb1be75ad9425eea6ff9cbf61ad176278d066d6237cb791f2db. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB42538189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf87e291c2714f34d2934a856729abe3e2ca8b31ad6c104ba504f36584683926. 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/FR10S1459509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31f7e5730eb5ce953d7dbcf2dfd19c7eaa0b0ea21ecb69312f7730c726659e9. 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/FR2X41437557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28d9c39222bd7ba80c36768d685bdb742dee0dda546c3fb7a9e06daf1cb3c5a. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:41:00Z), 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/FR10S1459610.
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