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 0x856f27680fe75501efd5600cf4b2f846609ba5299b7833d37fa1a4d84fa3ba1d. 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/ac06a7b3-b424-4a2f-95f3-96852be72635.json and https://artists.proofprofile.net/proofs/artist/ac06a7b3-b424-4a2f-95f3-96852be72635.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 0xaec56d40e24247a5207059d0d32d464e2b3583b509977ee1548011ae777bd420. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:11Z), 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/USX9P1170202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6972fb4e4b8713435c03356a1efde0dea7a8ef623a0d83df21ee8b6ce2d8320. 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/USX9P1170203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34fc8ccc581dbb547995a5e3a22e2d260445e3878923d65f0153c0533fdd935. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USX9P1170204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcb6b01e65761c3308d7f15009dbd1712375794e9b4daa1b360db5fa87b08b4. 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/USX9P1170206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf596489b346b8bb7b54cc49d2d112997d4ac56c9aff2ce86376eb15adb5a7e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:36Z), 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/USX9P1170207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb566510835a0c70d7fb5b70e5b70d996fd8b3b301b7351824057268161665a4. 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/USX9P1170208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc467077d3d230e7a6aa492fb9ba73cc220983d62e21f33042e2a54d6c6edee. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USX9P1170214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca9b60f33448b19c20698b5e72386031a02d5032b050520c5ba9721c1eea36f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USX9P1170215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60712ae7831baa8c1648a59c9f1a00d485756384e01073c5fef32db803ea9a70. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USX9P1170216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909ed85aafbbb4f20e5ddd8cfca23c822c7565a2bbad9a1e395c336344ed3657. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USHM91410671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24357625a3fc21502eb862d9ba78fc192a1f9f06a7fe8ab4b44b5348b731aa2. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:03:40Z), 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/USHM91410679.
Tema Ya Llegaron Los Arrieros Y El Fuereño
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19aaaa541c95840fc062393598942798d3b93962aff120f3ebb61eec46939b84. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/USHM92445372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69484b1e887719f697e98f70c7fb2667316e887a49d97483778001fbd0959125. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USHM92445374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1100d546521927d6fb162bf1f36382c2c9106b6c3766b73adcda712ecb37f0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USHM92445375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc745e8d047c25385d94bef4031c07fa093a782a353fbd46a4cc67ac4bfb76f. 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/USHM92445376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c71994a0814f42b6c5c4e84f67093a8aaa4612e8deb31a62ce3c8d450512be2. 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/USHM92445377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc899a32e432aeb3ac518a1184ebdc73af3b1146477040b7e25ded7351d48b069. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USHM92445386.