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 0x0287e0d9dd681f71af2d0fb1a7c7e48880ebbbdee1a63a24180909caf807a26d. 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/d5005462-4fca-4988-a1dd-6e03999c0623.json and https://artists.proofprofile.net/proofs/artist/d5005462-4fca-4988-a1dd-6e03999c0623.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 0x7ed8ee70bcb12d174ba912c5d4d0b8eefbbd54f09bf8891de526584b56a8c350. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZ5AB2009084.
O Verdadeiro (Homenagem ao Chorão Charlie Brown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d95326cac8d38178ad5efc6ebd836af3eee5ce065c98fab1a24a570b14c390f. 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/QZ5AB1966629.
Ouro Divino: Tribute To Erick Von Daniken
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63c1bdb83fc6bb68b6850495eb10c719fe672aa432525a4daeef367d971478b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BXPOB1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47842a106e7d7c154cafceb1fccdf06f701ecb9daa3b8e557e4d927374c406b3. 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/QZ5FN2133601.
A Forma do Crocodilo (Tributo a Billy Carson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02e486eef6f8803dbc5ccf246d2940d85ad545cb646508b084bb904528864f2. 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/BXC1X2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec464c761ba2c18f6da7dce92f1b27a8596ec1c81d386212fe268015a22e72a9. 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/BXC1X2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007414e05686d7f6945a25870a2536181a5f5d2a59cfc1c3a698666ae54fa358. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BXC1X2400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bfd7c5d1f0736b7bac5aeb3fcedd86a1f6fe21fdee06dd79a55af33e88c249. 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/BXC1X2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148552be2a31b9441a674f34b02cbbbf75463224b4b1a255d5b6193c68f8a627. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:05Z), 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/BXC1X2400023.
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 0x5e0d0a9e9b4f1e086818435cbc2cc33baf54ccc3f344a368dba7629b0e58974c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:45Z), 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/BXC1X2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561c38e4a64126ff48c6da8327744b8d45e4b0392b16e028c48e601388e62f82. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BXC1X2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7cd50d0c083796a392e41604fcdd3c5db1531f93bafa3fe6a83a28ce0d5840. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BXC1X2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302032da12f3d856dcbe1773b25f1301a3c9ceb1f7fce154dd92001e14e063cf. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/BXC1X2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e03e633113ca4981e7ddbf610a2944055da9ece5cced6e90ddcec61efad658b. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BXC1X2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7117537857661c2e66c088e693ab5314da2d59ff03791e5c3a59aa963f4bf6. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BXC1X2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32633b99c89b05efa10592418aee5fab72995c9e3c23d4342f6ead7c54bcaa2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXG9S2000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfda1a1d3fc33104500fe4371515a5aed0bf8f38c93452c4f022ced26d50761. 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/BRKGM1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e835f88c7d911d409f15daa9a52d8648aa81720d62687f3f6a35202be1d33d. 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/BRKGM1300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e13a1c622c30216607e73c12f5d057b154236f308b00281094cf741b59d40c3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXTM81600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5bfb929a8c2a884f850aadb8a03ac09ca94806284791ea2f55a9226b07191a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRHW61800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc8a1f255fcb16dc8d6a816046c2af1f545fb324af43f0c478f5ddfe05cc884. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BROIV2400025.