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 0x0090756eac722a8a4d10b35374568128c34464f21dd3302b7009b23a12edae1b. 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/05d36be5-f7da-46f8-95f3-3085221fb5bc.json and https://artists.proofprofile.net/proofs/artist/05d36be5-f7da-46f8-95f3-3085221fb5bc.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 0x2ab8a3a5af8199319fd8e3afa59ba2edea57d168506b2db9935d6a1bc9a847aa. 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/DEH742037353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ca15cd10e2e24a4cfe34e70cbdff3eb66aa993c6ac4cd48b49a2befe6049d7. 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/FRX281564098.
Sampler Deluxe Special Edition Summer 2010
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffacc1e3930ec004b2a69ddf990cedd530d84791f6aae9e7166fdb4df28a15e8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITR150900308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e0228e2050472426edd49df4342a605c6560bf5986e2ff023175a067ca4406. 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/FR96X2473779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c873c103fe2f77145adfd056a783fe3ba45d08ad028b72a1cba4bf004277ef. 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/DGA0Q2351005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e44a929c40bc3d2b1e8701ebdabb156ed1dedbb26753ccd1820c2433faed729. 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/GBSCL2300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626aa39c489983e10301410b65e8a2abb57cd287d9e43ea6c5b727b2bd7af64a. 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/DGA092399722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8836f09f43b034eb5cae84b14c7530e570094975a2fbfc70f9ea456112bed5c7. 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/DGA092399723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf336da0c81285eb55a78fbdc1463dd69b6b651ded41e9fee0af25f8d40c93b2c. 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/GBSCL2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa268a4104278e133a883a9ff2019f0d0158dd49c404a1c6bf891a9df8b88d51c. 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/GBSCL2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8998ae8cea9501575b7082cb037968a370c855426f57006fd1b9b213572c9d4f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX202345656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2176c57e26cb8e8f73b2f77fd49e334f1239298a1287d69e3c3f386ba931ff58. 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/DGA052244569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edda01d0d06efe7a978c8ebf9127a80ec23a339968bcab63766dcefca58523c. 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/DGA052244570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac84221a86901a65cc59d31d0323eff34a538b91a6fb122deda24a04c0f0e9e. 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/DEW872205122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f388fb7545101d5ff197de57b92a16274ffdcd2571c74aad0c23d7f7c51257. 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/DEW872205126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db4bb05477de4e1573b916f5170d788a9d8b60f92ee5955d9ffafc686725981. 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/DEW872205124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76ead8c3dc73287a264cd7f2757e1c231e289f524aed7b6867b95025bf5eac9. 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/DEY472274402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a7537dbc4e17ed7825596a6319f14f87cfce12912c6d7ab8fa6249cc18ebdd. 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/DEW872108558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb5f8c2c8397e8fd5a80c455ba2214c549dfd1dec4e3ef65e4e28c5a5373a03. 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/DEW872108551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8873a55a6b850379e6edefcc1ca02e2e061a7cb422f339463c06cf58069d828e. 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/DEW872108553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a7537dbc4e17ed7825596a6319f14f87cfce12912c6d7ab8fa6249cc18ebdd. 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/DEW872108558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e7e6842724e84b86d23c21255ac29117dbde6f742c90eb3a9399027cdc5125. 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/ES7842028538.
Transitions (Ramon Tapia Do What You Do Remix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca94e97241219a55c3c0355adf5c56f861c4ea836920e597d1101615748e5dfe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHFW1700128.