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 0xb879cb23d307d9a3d44951540f1ef3c39e2b0540f67e3567c2ad751314b1d8b6. 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/b9fdec9c-a7af-46a0-b2fe-3fad1d36ca1d.json and https://artists.proofprofile.net/proofs/artist/b9fdec9c-a7af-46a0-b2fe-3fad1d36ca1d.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 0x1071fa24066014f19f07ee96841441a2ddcaf6231f9a8fe198a1f865d57e7282. 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/BKLZF2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083c73a883cbe0077f428fc382e390942845a2e9c61f90135a8e12f43197a4ee. 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/QZNJW2339733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973e60747a0789c0f550646a8b6c8465449c994c579027edc43a894310a8ee29. 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/QZNJW2339736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe902a7dd3d5a1ce32ffe39bb07c78d0ebe46ba7ab9be89116e61dac32871effc. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNJW2339734.
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 0x430167188732f785a0e15764b3a1e5cde5b3d9dd618afcd1ce4b9690bbd75dcb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNJW2339735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b2468f35d85b13889a7f2cec86f200e2f8ad6d4044aa82d2d400bbcc94c434. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZNJW2339737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc886a2f46e915d4ae1d92c38164acd9bfeff5440418c9e5de2e8d5f3885d3e77. 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/US7VG2341930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7808ee75c89b10a8f139aaf8f37d48925af04b5de1ed713b69b318c1c73428e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BRTRB2201468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a71b603ae9e8c574ac42b58d75183baa7784ede01765441ecb0cbf9eddb346. 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/QZNJX2171062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5034985938c90640ec908630391e96c0f18b9cdbb502f0ba9a9e1b9e9f92cbc. 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/QZHZ32173088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4723709471fd35151c194e42a3cd86953fc8fda28e889c9b67435359fd416836. 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/QZNJV2000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081ea3102e554dfba5acad86daed2602ab18e747700f15954e82ce49e68f91f2. 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/QZNJV2000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71212f238f32828b4d19d55122fd05820fbc844ab83edaf69945b6177d8b452c. 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/QZNJV2000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0085abafa88dbbaba0d10122ec8f296824339c0e16f84dc29cccb80410a0ab85. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNJV2000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c172864e8eb4ac1212dc72994978105d56268bd4343702007bc59e8c8d0ba0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZNJV2000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7623ecd8415cceaf4a6d8a7fc8e07a55ed9004935d6cdadc73fa4e525dcfe9. 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/QZHZ32031127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd9f0538df6063fc928d976c3d1c46f7772943de8283bb16be62b10774da4c8. 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/QZGLM2078874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff62bd8d593138806efc740fe48b52932104681e532854d040b8a7473b6a834. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ5AB1910869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7408a1bc15bf78beb7fce046406f2206ce9aded9cb34dda170fe0375f00025c5. 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/BCM112300089.
Lúcifer: O Evangelho Segundo Meus Demônios
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8197ae5385c7347d0132c0a5012063ec21f68b5a52fafe222147f214ce22b9. 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/BX5HL2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f2c72b8f14b46afe73129e10d7b0ffdf8aca4b9ffcaf2424f9f0bc3e0579f1. 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/BKLZF2300009.