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 0x4b4fd4770af4099cca240675d9ed7eb28dfc59037e052e381a206a2529c419e2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d733ae74-91db-42bc-80ce-7aa5232fba0e.json and https://artists.proofprofile.net/proofs/artist/d733ae74-91db-42bc-80ce-7aa5232fba0e.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 0xdc07d5a619e8a20671e3ac967b5fcd746fac0cefbe9a4e1608a57ceb6aa8a6e1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBMA22303028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7279754920bca67429a452aa68104ab463c64a6674bcad55203dddf2a976afa8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES82196757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d24f7a8195e9f09340472ace9d05af303b7966dcf020741e5e128877c6e392. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWT2048506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85d1a57a866606bf2f4665d01791dc30d0db2be8df3aad6e27ffae54aa73df1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBMA22309918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282b18616c8f4d2b465a53d7278cc594a8c6beb3cbc8e5441a78e769574a5400. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX872151779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4842b3e8e16315bf8b9e147e018025770f7e7aecfce17feda73f40a13494a411. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZK6Q1911280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce8a60ffe2ca69ea8b0c9f2e9bb07acd1dfe9b1588e4208d17024c7d3272ffd. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:19:45Z), 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/GBMA22313351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141954bc57555157fe1bbe9766267a6f292e1461d54a35cad8d9b82df11cd666. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/GBMA22313352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8db2677fb14f916ace16735a175dcbd58a0afe6a5e403d930f07882781ebfb. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:28:16Z), 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/GBMA22313353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1fa853d8424019e44b05c9b877150e2fa0925b0fceade289087b9b00c33345. 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/TCAGJ2205862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a35c8b0b4f4ce10e3d8b8d205f39ab520649462c3b7f05291fdd7613846d4f0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBMA22313354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f86e87a70fee4e0606604f6645951b6878f958d1c57f71ad95d5d694672877. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBMA22313355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9845dca4245f421af0fb2c0fa98559489ab4a56e24d0f992f4cff296f2be7e9f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBMA22313356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fb1f25739c52c855d9f20e45535966362b9b10c343c4eb645a02f02659c10f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBMA22313387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7473fef8a224e0390b98575fad9ae4d9249615f554b2cb96b7b31627ae048f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBMA22324748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebb28e5234d1a8e9cb83a4371e5ac204f501f4cf1bd7574bcf1728055b77522. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBMA22324747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421a37509ea6a8359c220202a281d53d19ba6ff1489b1278f9eeeba8f4223a63. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBMA22331885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b7ca4a093acc0333feeccef5adce7a4f72c20b70a03972739fcba8c9b8c007. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBMA22331278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169f4ec80898a2b4d0a73dddad14f230b186a9b1d48b9a31c919c52c503795bc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBMA22331225.