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 0x69795771914258f2a61bb9e45885791cf755a2199cff38153a5cad85f70eb6f7. 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/1835fad5-4e0d-4f56-aac1-4df25ec36d83.json and https://artists.proofprofile.net/proofs/artist/1835fad5-4e0d-4f56-aac1-4df25ec36d83.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 0xba0ecd024080d124fe41fe9ec2f3b5b9b923ea12f1ff4f666448029b4e273bcd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USJ3V2015976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07535de4b433deea687d352977a333f0873aed1e3eb9969304b7aee05328335. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USJ3V2015980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d37f1eaf588d13dfa0673731e6d5d514bc320e100796dc39f75fb0a70443bc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USJ3V2015982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20145c9800d14e069ef542f3ca6d0f8bbc29f1311df5a65eb165b169d892823f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:24Z), 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/USJ3V2015985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc2d3ef408c9295de7abc438f702c7224e91f805ec2f4f8fdffebd3fb54014f. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USJ3V2015987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196688ca1d28e20a6448b395f228ffb36c6c03304bbcd6f625764e65f6bafada. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/USJ3V2015988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa586a716c52b5789c557717e4c22440fc406ca8ee7211caf2403d2810beed32. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:44:22Z), 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/USJ3V2016003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3deadbe08f252703c5030aa998b4fdf94cb66e02dfe34ae6f80d444cb03699. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:48:57Z), 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/USJ3V2016005.
Transmision En Vivo Desde la Comarca Lagunera - 24 Super Temas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327644d56a93f7c7d510569927bea6d10cf102e22e83ea90da12c8b9da01f74b. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USJ3V2015995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da822035e2d15bee6aa3e4e8ecdedab306fcee3b8c7fc91d70603f6d2bcffe9. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USJ3V2015997.
Desde el Ejido el Manantial, Vol. 2 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3ac47a29b974fbc1700d4108d335e0e89c03c77c5194dec0d0d2f2875c084d. 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/USJ3V2381706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b86abbc473c41d5026b1a8f4f2523532631e280927ea21e87c1f59bda118c5f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USJ3V2381707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b2a708e73c621bf724d5677e198744e82d51aebe55af31ffe1fa87dbbd6afd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USJ3V2381709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663e3ad2fd9d0448e595cb8c4351d2eeaabace466f5d31faa9c69e432a0f5222. 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/USJ3V2381711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5683ceb558293c71cdbf64e358cbb712043de189a8495257eb4a980b51083ff. 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/USJ3V2381712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe847160d1d75f02f017d4787e052fdace4af65f7424f7b861822527f8e1883ef. 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/USJ3V2381713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f699f4b649c23cb43e8acad50c6fe81a17d55abd0585cf1128079b75c065b23. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:20:16Z), 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/USJ3V2381714.