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 0xf4a469cd1bc563d5fc26fb9e0db4db3c62defa2f8a478bad097887e443ce2eff. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3557ef52-6270-4e0d-98b0-826027476cd4.json and https://artists.proofprofile.net/proofs/artist/3557ef52-6270-4e0d-98b0-826027476cd4.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 0xed337f0414f17643375369e06bfd55124fc203563ea413c37e9c16b45a13cfd5. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:56Z), 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/USQY50938094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe1da3447e9aff987f9e7ab84d10ffb4d85f3b48a1ce909cc51e47ff63f1727. 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/USA2U1000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61bc2c783ee9660b743386ab86feccc7dae4f76168937da2ddeddb6b39bb2c9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:42:00Z), 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/USA2U1000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7feaa53a06315aaec661c0c67dc44ade396747b23846ec092bc7499bb5a664. 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/USA2U1000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e426cd5c83ed34958b67748dbd15177d851252a2cddf060aa9dc72e404719ca. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:11Z), 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/USA2U1000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f10b9e62976e067afb4de1d2f5e2d01e4bc2be0211e1b79a2bc165d7cb61f7. 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/USA2U1000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb6f95f9e90f45bc8c3f6c49075b1b09e340db7e209900fec22cbd9c71ec6da. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USKO11300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0c74fad55d6af631a71e811dc94101803ea9e30b659df660239587015325ce. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USKO11300263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705be40f7b1a692b655f6aed0cd5c7f1754ddd44c8b664321b6a7c8a0e0b5f17. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USKO11300264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7abfd3b8430ce3d6a70341501ad86bd76a9dbd0c203360d28dcc73a7d4fcabc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USKO11300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797f70e23f2d2c875f0ee0fd3064565e6c5bcfa6d400dba8e9c985d4ef88c91d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:56:38Z), 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/USKO11300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc765c87402157352e73ae54c3f53e23e536b9e30d234ac45a078203485f764ba. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:53:51Z), 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/USKO11300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1b407c7c191273df9b0f24c6fd168cfc31d60f02964e88a2f31c1369cfb5e3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USKO11300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204a5932022ec5f7b24de0b347c8b299ac654e4017f4ae620faf14b4e82782a7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:48Z), 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/USKO11300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf706cdfd4b9eff9bdbfbaef0add1afb750aa1adb9789b21133fa1e47780dbee. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USA2U1300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeff1dca74c10c0533c7f59b9d73f0612c0f2a572e4d6d9b4bafa16dc6f7fab. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA2U1300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf615657cdebb669900354eaec04bd67e0dfab70bb5b4da4f6284ed80b4348cd. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES91806925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb77c787a6cf68caba1d8af286468025a7d1f3751ae0221863322f44bea1d964. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/USA2U1000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ee2d5913d07d7b6123af8e8b72d360619feb711daa385c4d353231661f1891. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:43Z), 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/USA2U2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf615657cdebb669900354eaec04bd67e0dfab70bb5b4da4f6284ed80b4348cd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES91806925.