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 0x5633d10af09fd39c4ca65d8badf6e5a25407eb86321bf062820cdee12ff4f60f. 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/f136127d-d6eb-4613-b656-a224abd95143.json and https://artists.proofprofile.net/proofs/artist/f136127d-d6eb-4613-b656-a224abd95143.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 0xc33b7ea67646dbd6fc9b6b77471d0d4c5e29be2fc4e627081c51d7ae0360d913. 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/USA370539239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65df01f6489ba1986075ba6564c381ac8d9314f77014752715ffb7b0a9c8d75. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USA370539241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28df170232861314e8f828e1a4bdfb7fcb7dac96066a3b44bd9ef35bfd10995. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USA370539242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337e93022c73902b61b3028f89cbc8a729fa0607fc5e3761ff075112f6384a7e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USA370539243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bc6ceecef9be83cbbcfe2724d285f3615772fcf0d516cfcecd45e3ef1d8b07. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USA370539244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e19660168fbc2877fefac439391bec6050dbccfe9dbf8f5a022a20f26db832. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USA370539246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612cc1b20fc0fc6f469f2828b3632b44ead45c491c266b1ea95c81fca5adff83. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USA370539247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d8868b313c5f1db08b40db1e71c2909ba50e9dcb3fa1a79950570c1569b748. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USA370539248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3769e5a55c2d6dde2afb8a5e3741e72a6827a9610b1e52fc493ad3926d47de07. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USA370539249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143ea1a7f01f1467a60fe931063a55f7adcb9620ea272577c2a12d0c1d7c9494. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA370539250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb81e25e6b4eeab12eda3a30d6c094aedde0d10a907c06802c591b97425444f0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA370539207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd941c4a33e6b74dd45e029d1a567f7302804bfe71ca7ecc7283f5281c9c4c12a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:45:19Z), 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/USA370539208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22aa48b65d35b98d018c9b681081ae533a79a3ee506c57f8c89494229a661845. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA370539209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d283174a969a43acb1a9b7e4d0dc69a3fc8b27d21087889e7e47af9771c695. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/USA370539210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe481d50b632711de4c062f322dc3ddabaa160fd990cdc192ee441fd6d1bd7c49. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA370539211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc6ba8666a64e129764c6cd8d16e039ff688c9d7f3e3a8fc892f243d5527de0. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USA370539221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8851349fc4758941f4a1932a04a426d4575dd83ef9ef0bcc65e4be550488d2e2. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:28:38Z), 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/USA370539216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f60cc0435b98603157a55fdc03f7bc98e514ea7027848c776423953fde04ee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA370539217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aee778df7913d10b17d128a7758c0a6cec34dbe70be36c78452c36c7cae8128. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA370539223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc9d77e844b35360712297592bd5b901d047e34c3e01712623545aeae1e23db. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USA370539225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0dad49fcacbfdf922d35367ea6b78437fb224af3aac30751995d0e302bcad4. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:54:26Z), 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/USA370539226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe254b54eff8b5e2ea3d129c69487e2f33058ba2ab72c58d815b93d2ed918bacb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA370539228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7509c1a5b94b321d4e5bf77e948f93701a7cf7d4da05d26212aef2c706feea. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USA370539231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a2c95c1bd927c27b3d6860056102a6b58bdf0462541234e23a58aae0396db3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USA370539234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4471ae09a4820facbc292c90e0cde2aea9f753c36d80c31c99eb684894ac94c3. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USSM10017579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f78a2aba1ee4a9c5f7be16aaa4f5f4fa429780fdf81c8dc6905b888f9c39a9b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:20:26Z), 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/USSM10017580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf7ccd4aef37d85b41b45c05c93c4439212c09d8dfb1a934acfcc2965a604d9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USSM10017581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca08d2fea9048773573fa15fcbeb4b296125c3787e97519c2b1ab73ecb80760. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USSM10017582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85289576d4d0c4527735d0873e7e31fd4a3b716956a254a4a012ecebd9958883. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USSM10017584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6888f976d3a552af7fc0d4c33bb001e285400fe522a3915149d5186b27623fcf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSM19300011.
lowFLOWs: The Columbia Anthology ('91-'93)