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 0x6b32a06fcdbe424b67c9d297d9dec738b003ee93f29ca53939ca7eb54b5b2d9e. 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/db149f67-165d-4f9a-ae7d-1ee4b31ea3e8.json and https://artists.proofprofile.net/proofs/artist/db149f67-165d-4f9a-ae7d-1ee4b31ea3e8.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 0x8d01f9d7a78a219c8014ad998a62198accb88a195ce3f6cca2f6112eb41cb127. 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/CH6542080489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62b98894a1872bb99589ea1118b8a7e1b9ee4c864e17752c82ff59eaa5064e2. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CH6542080491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287f385a58c0282f4eccdd1ed87f6336391c6459a3956bc8ac4dc1dd4253a44f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/CH6542080595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb42b1af3d3a2cfec21ccd18f1a003f64944254b64357aa4bfbb98e227bb611. 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/CH6542080596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebc22c86f1b7a225ead279cce7e37638f23d34221ccecaac823d2b99c923024. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CH6542018834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cee860e50787f285af2ddc9498196f593551cc8a45f63c073a824fc5959bbd8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH6542018822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401b232391192963be58a68363f9e09102dc45d801421e8438ae83853031932d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH6542018820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c30dc0cb51ae7c4ec37eb55fe16775019e81057e10990623bd8e92ef39e8953. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:39:43Z), 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/CH6542105812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa655b4fc156fc6d0c410b6ae22ae9bae37d42f9c7f22d9ea7c702ce3fc484591. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:50Z), 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/CH6542105813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86641cbfa0b8667ee1aca84f357900cf91b5aacee0abc780dd4d985d9581b0b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/CH6542105825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde9ecd123db6f3f6dfb1d7e4299a05dda5b71df0ff5ec532a35bcca7da42ae9. 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/CH6542105830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe7328390e77cc5cc650b61bd233c3fead31192a635059da375556c1c34edec. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/UKXN22296936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe650858dc3f3ccd5abe8f50ba9753a9809d7ab7f187a79deba31b88445cf66a6. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZ5AB1650601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae57097b22998c965502bcc73be92f3610a42b1668fe0a6ef7ef082d78b5de5. 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/QZ5AB1650602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be9cae3d4e513d32885447387b96e99454338e7be5dc2a6ace6e365a7e8439f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZ5AB1650604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6de8e16735479e1daae2b10e9baf8363480a921094d3487637171e7228c61e6. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZ5AB1650606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe124bba1cade40be698781a7e15fd81d3e1ca2ae3b7e64f4b645e98478049341. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZ5AB1650609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5e98249c0e3580788d546947c94019ae107f4973eabff3db29579778a8df89. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ5AB1650610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c67cb680a68048a3a836d5bc4757df4697356ee3632c4340a63386905a52173. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:58:41Z), 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/QZ5AB1650611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dd4ad1834b9f7e168af5a969e2d9743d2a0181f19134cbd704d7868e145ad5. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/RUA1H1770005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f02ed0f8e977836e73db0392bae1cfd71cd48381b55d7ffa98e17434a093c6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUA1H1770000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4b791875d190c3b9164c12cfc2eb26333f97b374d80c459143d8558709ee66. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUA1H1769999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7caa2152c98fa33ab3089314327758a610e7d1dea38e4ae03da0500439be269. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:01Z), 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/RUA1H1769998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcde20e26a09f45a8354ed4310469ba29c56bc2464bed2b1a6a6ecfc11237d8b. 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/RUA1H1769996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7fd0bc00fedc2e2e218cf6cc52b643c1dcbd7ba747cf41a1ac9eb1ec820a88. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CH6541807692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a01a59c639464469f95e89a89d4682a3f04bbe594016158e8265a22c89c321. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:50:09Z), 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/CH6541807701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97260aaa7aeeb5de9c8c52531da1816bbc67bac3af6911cc2a2d004213418ff0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:57Z), 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/CH6541890970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92fc38f5cfcf77c550c5c1f41a6e5cd01eb957968b5d2b5fa5875d0c6a30fe6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH6541890972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b75cd9349f294cbd91486b2e11c0c434ee05a38e1d4dfde0127aa20cff6e2c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CH6541890973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd7e9e52260eb22f8e185e88a44508dc3947b5ed24ea06044c4b645eea4acd7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:24:50Z), 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/CH6541890974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7200cf9aabb55721d7e7282fd3ad54dbde1f96500bc3c8f89adc2e6c5042b0. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CH6541890976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3d27a946a13c9d91221ab0ae15f1398d884edbf98d6355a459f725fecf4afe. 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/CH6541890978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1861de06701d381a2487b98cdfa72afd7f96038e5bf25040281d77962ed62f4a. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:42:41Z), 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/CH6541652642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c06fb32d60dd0417fc400e4266b01b98ad5f729dc26a3898334710959d5554. 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/CH6541652643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8c3d81c86761351148aa2bafa2894e325ebc5d2d8178b65bd1404c0664c8b3. 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/CH6541686539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1264f4f8b572ada4aef36c277f05580107951ef0e758867cb785a36152177bfe. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CH6541686531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d6ee4574135f3f43a11ed7b8af109d6f544498ba0e3a47fefe170007caa702. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH6541686530.