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 0x59ec99b05c31242c2634be496ee33df4d5cac2cb775ce8196465c8f11325911f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94a8c164-e416-4f5f-bfb1-b29e4dffee95.json and https://artists.proofprofile.net/proofs/artist/94a8c164-e416-4f5f-bfb1-b29e4dffee95.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 0x660ec4d3aead32cd7e474a7918bbb4a4306125538dc4bee20475fc7b2ea64609. 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/QZTPX2388087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6284148f8393dcf1779e57a902aef7a031d80c94ea08cacd534db90c554bb0cc. 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/BX4IU2345751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b84f7dc1410beb8b8dadcb3d8bb6ba1f88df4ab602e8d6e5368dc88a7b6e1d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX4IU2335046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c46d3a3c8f62fdbac4273e6e99a9754ca6cd95a2bcdfd9a59be515bcd941bf1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCWK42400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecabd991ce4458dd6296a2d3816e99fd986a37cd2d03c620d807a62cbf6b326. 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/BC6M22505136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc82c72f40edcd4cf428dc4f3080762bdb03d63e8509c60d6700bf19842ca7b8. 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/BCX6W2400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb6f2a00dddae656c3ed70b507724cc3b0a3db08e00603e7167120f23088cbb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6N2590943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b7eb61e77b1b00ce12f3df1b3d8858eefeb27ddad3b88efdb6f611411ff39b. 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/GBWUL2574538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dc34769d518883fdd7b53bd9c22550bc8f13bac63f80d10a042d8470abe01c. 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/GBRKQ2576072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52a347a0d3941c22321fc275a6646a070bb4a2fb0e012af3db0a5730f688d1f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZWFS2405724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d505a73725d20f533c6e1f113d1ed1996c950e1cb03e3f0a790056e86893cb. 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/QZTBF2425359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc351b1567588615c145ddf099793b7f6761602b69082a9c226e9c5b073207d98. 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/QZTAZ2492948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d27689703683ad14a014d4f0066881d0cc821a33a374778e51a1f6694491239. 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/QZMZ92428590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd46daf23dcd903602225086d194ed3bf5b8379a07aeda9cc07a75ff02d76b6c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA52427856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b22c965bd7b50c558105742d7e80e705612f14400ca732dd8c2be1c272ed593. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZWFN2395607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc358d07abac8383abd1deb2150429ec83f6e142ad8559606b2034837a2c9f8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWFH2379333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7251b01c30940f04eab1fe89834a0453d5b0a9d944d44a801f9ab79e98a4c516. 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/QZTBD2322189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1862d3a86e54192dbfe4d0a6fd4e819169f5415d7d610b44073492ccca9f3d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAU2376736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae28c147371add138f010fdf11d3ed6ae58443e6230887d6ca87436805fac6d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJW2300316.
MTG PARAISO TROPICAL x VAI FUDER NO CALOR
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5d6187391d615647b38e52907321aaa28a727ab3e57f33c8f796d685b50c57. 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/QZES52505096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccd6c12770266ae97303c709648a441324bade72fff9a101bf6c5f5ca2edb11. 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/QZZ7S2430355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b65b04ff1d7874b5a8dbb6bf56cc57c09ae36ba79373069e768e4df2a1ddcf. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZZ762462443.
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