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 0xb1794aba4e0f06c34211bc8a38283818da5911f3422e2a2b850176c6f42badc1. 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/45d3f2e2-7992-4bbb-9df0-313b09bc6687.json and https://artists.proofprofile.net/proofs/artist/45d3f2e2-7992-4bbb-9df0-313b09bc6687.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 0xc2c7569adde7793a12b83a91afd5b673092b7a272c472f072d960543160715e5. 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/PEPA51711105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d07b0fb48b660dc8b0218d9ba913c94b3606b6731769373b2dc811fcf67b7f4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:45:15Z), 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/PEPA51711107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba89bc42f4b4dfecc16224c40c3f21f776fb92f634e919ace5e1f9d417a647c4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/PEPA51711108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e42f750a01c600f1a8d48d065659e9100ec343d82212ce5b2461b2fb043688f. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/PEPA51711113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90262a3703a3421602b99686272f828adb389d1c75ec95251205327461253261. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:18Z), 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/PEPA51711114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb533b0ad2534e1a9da8b903d9041f8e5e7e22e72f501e17959f5105c32115e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:55:49Z), 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/PEPA51711115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb641a49755a98ca3bc5378342f4f45cd34b58363a946c35d07f2ee9400c5f514. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PEPA51711048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65a11cfce15ee2b454f9072a73be0167b2dbdd701d21478fa4f65196f8ca4b5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/PEPA51711050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe396078789580a42cd23beae1a4132ed3707611b75395dd52986d5e5df670ae7. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/PEPA51711052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a4e76c988d2aaaf537f6c12bf0dabbb49c2eaaff0123495ea15afa50ecc0c8. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/PEPA51711054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa67d65d348865fef76a53f09bbf016ac7dc2adfef0a140a079d2fd6117bbc47. 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/PEPA51711057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d95c306265572b63064228781302ad7d224d10404fd5be357c946bc211d315c. 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/PEPA51711058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100a29bc3f1928b4b40a9dd91ad9bda9eb98cf2c6322270f3cfd31c5f3987251. 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/PEPA51711059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3585f4ead2cae77776ff39859a785618f2650f66c0572fbc7a05cc3d5d812f48. 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/PEPA51711061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf333561b4de989fad663b096f0ee294bbedc57171511ca5d05a2ba8ca7f2cc3. 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/PEPA51711063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f5ceb086d9b94fa7de8be5ad6315a1daf6eb626dc06a47745ea76b4726d0a5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:40:00Z), 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/PEPA51711064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa67d65d348865fef76a53f09bbf016ac7dc2adfef0a140a079d2fd6117bbc47. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/PEPA51711057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d95c306265572b63064228781302ad7d224d10404fd5be357c946bc211d315c. 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/PEPA51711058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100a29bc3f1928b4b40a9dd91ad9bda9eb98cf2c6322270f3cfd31c5f3987251. 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/PEPA51711059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3585f4ead2cae77776ff39859a785618f2650f66c0572fbc7a05cc3d5d812f48. 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/PEPA51711061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf333561b4de989fad663b096f0ee294bbedc57171511ca5d05a2ba8ca7f2cc3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/PEPA51711063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f5ceb086d9b94fa7de8be5ad6315a1daf6eb626dc06a47745ea76b4726d0a5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:42:49Z), 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/PEPA51711064.