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 0x3d697fe985acc53b73d31f0fe0f6808f4dbb52a61c40b461582f6941e467fc17. 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/3863b16f-8052-4458-8a16-f6682543074e.json and https://artists.proofprofile.net/proofs/artist/3863b16f-8052-4458-8a16-f6682543074e.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 0x2c21b24185b16b25787055a9a967b2f0ceaab43267ba09362747fbe8c6a7d7c4. 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/QMANG2231452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b7aa73cb28c3b06b0e3360cd60544f2f3df8bc251bc329b235c4cfb95963e5. 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/QMANG2203862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b2b2c81a1060151b9e884511cdeb0655e4e9bd42197d3c7f726c3cec560152. 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/QMANG2206265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3514c026e4d6ea25946a146da50e81e6c72608f3c43321bb1e78c3f0bc9cefa3. 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/QMANG2206266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1ee6b7bab4a8acec934d90a7d3b428bd521100346b8be0d86051c20546df6f. 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/QMANG2206267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731601a8b4b42c4c5ba10f1fdfc67560495a14a5522c35d1d0e16d06408c2ebb. 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/QMANG2206269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acaea6a75615a16387244f8f5c63b91c8068331a20277eb6cce9faaac1f5b63. 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/QMANG2206272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bcf30968c6197db258102ec51902f4c2cfd50e0843c28b9bbe1c279d5d388d. 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/QMANG2206274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436dffaa544fcd10f900de403aa1d0a32560e45d3d5b3bee143745b5aa84113f. 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/QMANG2206276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4ad21a7f4c4731fc645fd799feb8692adf5100d93da1fa4832dd6f4333b894. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMANG2206277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bb6ffe5c9ca03ba9ee5aa80010af29fb493b1a8f9cabcfc5f79e29931ef77f. 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/QMANG2206278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ccd3f01f01b58b99da94a8d17d9995e5e6c8798403ba6bacba081c8faf1aea. 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/QMANG2206282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5d56505b2bf1ae25a1fe834cdf5001994046b1edef645c74b332187b26ea41. 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/QMANG2206284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7489856e10bc27622d9ee627ed2b0ec1dd4a0dfb08fdb8be2fce3ddb2edd65. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMANG2206286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26da86a24015b56d54a552f3d06d1299bd0c5ab3ff0315cba1f5cfd23a9cd12. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM3DF2209677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39dea5109d7f32fe4b70506b1afb006ca032edae1f78fcfc77f79d1af7f74b0. 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/US3DF2426122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f9583b7cb3ee72612f9d2280650a4a500acaf8726ea8670c8c180d63a30ba0. 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/USANG2477357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc84679b64e8cd33b0b4a8f1d57d757ca7b06b92796785caa354a4ef27af18ef. 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/QM4TW2493865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b83ee6f10646f114e355793d0b502597e4ce5cd007b7d1f77d7194b1b21e59. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USANG2401429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451fecb20c62e6aebcde2a0d3283e650d3bbaa9d889927cd04c7eb3a12aecbf4. 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/MXF152302023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0800d7f96663634eb51b8248fcc4444ccfbddaea397951cc7da81997629631. 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/MXF152301714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf00dbe2a60671c38c38634cc9a32d93e0f2d2266784ac38bfc1575494ad2cd6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF152301371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb3116a952b541ea180cdf6b5aded4ed01a5e7fc8c8acc3f26156e78ecec60f. 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/TCAJD2585750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14fdfc77a77385b1257d6dd2b1d1d30cbebdec8b73e9e15f9931ab851cf0d06. 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/QMFME2411811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d77c8414ee6a3e657f7b0d492bca5d85465c168566578b734bd12417f02b40b. 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/US3DF2498685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908993cbdef54de3a176b8bd85ffa7fea76a6d5727921e0e3a18f46bf8912bfc. 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/TCAIY2438276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779755346cbccc37dc0ed611c5f3b96862b89424db91256e010573b1fb2ead77. 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/QMDA62486538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287fc2d57afdffcceac5b22ea32472514e706466f4000662db6752be4b1bae9d. 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/QMDA62487625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bf8d9109eae26ab273d135f0dafe8e491c1d4f69ddf0d7ec8bc07501a65172. 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/QMDA62486524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5977835997a35a462a119f9244b9589c201f5c26ccd1bf93ecce5cdb3c153178. 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/TCAIO2460895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145351ec6243d6c191cf15ebc370ea72f76fd188ff5311ffa0ef25d2a007ad50. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIH2483671.