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 0xa72f0ec3623722789db5dc53cff16c0fe6af6d7d947f28e759f03a6cdc4c089b. 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/e21e2c81-3716-41a5-a99b-1d4174dad30f.json and https://artists.proofprofile.net/proofs/artist/e21e2c81-3716-41a5-a99b-1d4174dad30f.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 0x2643ccd74fa52dac7fa894baa86c11288390db61e1f299322778962f59279ee8. 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/UKXN22005089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc307f883dd41109d84be56045ad5735613605a5fa63c6144d5231f2d3cf56f. 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/UKXN21946677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074e39483859f46cc015ff21292807cd01c2cb6dcfcf42bf4a9d678c435f4450. 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/ARF112100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0e50bdd39d9d94086837118c7c7c115b68726fd51306851730428cbafb3ac2. 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/GBLFP2019416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc307f883dd41109d84be56045ad5735613605a5fa63c6144d5231f2d3cf56f. 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/UKXN21946677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fa3dfb2dca2fa2fac0b2de5f2180f5d188f7b6f7fa021c6e6855e152cf900f. 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/QZHZ41924329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704099e3dc8d04cbfca1af7ec6c349ce3a2d2305e7611afe47c1a07776532768. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF112100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2643ccd74fa52dac7fa894baa86c11288390db61e1f299322778962f59279ee8. 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/UKXN22005089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0156bb84a179a5d08cc15e48158a4fc7e271a2f03ca0ab5ca941a90134a5af17. 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/GBLFP2129838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca337bce71734751a1d36974dfb27f7928a1f4b1ad83fd0a36d7b81b7139aff. 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/ARF112100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19aee415c854530e43173798d320518cde623e1a28303755374e34b27ccf9cbc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ARF112200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baa25d92cb58e96acb52ac58b53814f5dec11f609cf1b3d4fe9e5cbd9433780. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ARF112200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6fec49f6dcf878188b59a9f9e97981237afe44c7a897dbcc345963ce395fdb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF112200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe318b53abfebea3f26bb6eb036f5c3300861c62ec7e0e77eb173ca43520738d0. 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/ARF112300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf20ef425606faaf6e4dda95dd0a45dead9660eb79550bcce5d05599ab0a1b5. 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/ARF112300237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4727c1384fda88702ee4a14244a87e1ffeae6ac0f8a3f969146591924c40e6be. 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/ARF112300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d53ca86b714f6f91b3ce0c27e746375a66463e3daba8c570838cabfa26cc5cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF112300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf3e05c065dac5158182bde4673faee5889445133dc7340e2d5bb9e204399f. 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/ARF112300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c319ce60fe6e3d7ad6832adbf4334289e7b8aad4884cd0a4faa90225af66b11. 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/ARF112300241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2b3e48fdeff5aca4d7b590eaee0448b90cdcee1cb3bb72561e56bdaa335863. 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/ARF112300242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71b355649552f5fa1eb01e49ba674c1fe1339325c6f72a2a3deabe180191278. 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/ARF112300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7ab2106a7290ad2bc4a9750050a65e1b0e1be7e4a17fd561bc99938b38bf12. 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/ARF112300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe318b53abfebea3f26bb6eb036f5c3300861c62ec7e0e77eb173ca43520738d0. 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/ARF112300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74ff888e11d70d15dc74507e64ed24e9cdcb18dc4002f7c22f3c5dd66de9544. 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/ARF112300244.
TESORO, Fantasía Orquestal Urbana (En Vivo)