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 0xbc66e9fe6a2737eea85009cbdb6c0fcec4142e08d2ec0265c38928f6d47b412e. 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/354b0df7-6540-409c-8c47-800d1ed0c667.json and https://artists.proofprofile.net/proofs/artist/354b0df7-6540-409c-8c47-800d1ed0c667.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 0x30c7ecb1c03c129c63dfb956d59beede9144050d235f564402c6c375681cb116. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BC0PG2400003.
Ressentimentos III: Peito Cheio, Alma Leve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a1eb2478dca47fd8131b19308782ac9824a3d360190bea6b1e63009867b990. 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/QZNJZ2168300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb187b36a18b6424ac22f47e35ca1d98f669a3ce5d0025ee445518279d48f460a. 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/BCMUI2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c389724f86c35a011927a790496ea9303c9aace698df09786c3b326080c02ee. 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/QZ5AB2056934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3465cb662d0b0d45d25ee075906f27883b08ce730082b4a491189c7a7edb58a. 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/BCGSU2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2455bdaa0cf11ec8d32c9fef43b5b8cdcb3a3fd090116060fbfe6218c599b97. 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/US7VG1805619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8ac1b100d8384db9abca94eecd22e1d0bba2c8e098415608972865ef111aed. 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/BC0PG2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedb7b854f8e03cda0704c98d4fdd59ce752f27e1c2be353a5fee3876500b9bf. 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/BC0PG2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdb1d5bf811ae4f8c9f1a9bbc533b76adacaa628a9d4e406d1607c44105764c. 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/BC0PG2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d24cc7d907dd3b900864f7439f15ca22e0d22ea3a81ff4ea9b3acc4bbd777c. 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/BC0PG2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123fba509d5553b6dc4e4a151400ee0b300e48e7f5d326b3e49d9f8c90d35654. 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/BC0PG2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f0eae9c603c35589896cb248a1b62cedb5f464845fc2ff46b11bf611f12008. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BX4RG2100011.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55843e1fe095c8fce730547374174c8b8ac1d0c54e771b39b7337e90d3be38fe. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/BRCQE2200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e14576c4e1811d0f8622bc905d6ed0cda2f0da52792d3748ef283c0b3c824e. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BC0PG2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8366f4372c62a428366b493200bc300f57d46751227e1e47add3240606c64095. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BC0PG2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7785e95cfcfb0a0f5c8bd241f41a0a9a1b356ee586b35c6bf0cbe9ee086bfe. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BC0PG2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7696fbf4eff5d13b011a68d641000d9d760d5de11c4c610fe7403eaf6cb1364. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BC0PG2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09540a85d71d5257804ac9e52b026b2c8b7efb2d83e90486832a7af780733c8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BC0PG2300010.