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 0x508716519aa975c84b6cb986a84a132352ead103a22609efc02b17833fb7aacf. 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/69c0a742-d8d9-4a36-bbc1-a14be61e8f94.json and https://artists.proofprofile.net/proofs/artist/69c0a742-d8d9-4a36-bbc1-a14be61e8f94.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 0xe209c4001a41abbd1de24a2d1e94507c95db23025ee182771b1640d630caeee6. 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/QZTB52442346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401be61baebdacc5937affa66c10796ed9ce99e51a2662e57c227db4f352ec42. 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/QZTB52442339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728de735a8a27b2dae4029fbed23370fd3cbd9ef61e2471600a7474054d2efcc. 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/QZTB52442345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de374fb964b1765bf8d76298ed161f750d4dce786ca09f95b26dba18c875b4f. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZTB52433080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc868794eb7a192a7ebd9001db34a435e66dfb9c87f2cc61e2bec6605cdf7a65b. 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/QZTB52442344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f5e6648a3f2957cfedb0f8d98ec838559bcbc4feb7a6c7360b7e660402f02f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTB72402206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf3a6967bd340c382a6f69233a3bf9a3bae3956a2551e17fc6205b12124a39b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB72402264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cb546cdd53b7c4c44ed5f0299141c4d6855fb451510d61d2d557b81ed90bbf. 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/QZTB72402262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6211e1bcdb2344d78e65c6609d39ddfe741f728676a1c9c3dc95d193f236d6c4. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTB72402267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb949af32506dce1921e38c155bf4c5780b6e3066e4552ee0e580c7724ff74374. 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/QZTB72402260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa795fd0dab714f3396b15478748cf56434526ab02127592b68faacdd05498c8. 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/QZTB72402265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1087c33c7adfa5337dc91d9ad073908834f911f1a6e5521953ae1322605b1c25. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB72404953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03245222916cff2409122e593c012200ee9f2653f4bacc6b7a29d43c9215a555. 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/QZTB72402259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b3b1f93c5f0bd605cde34c8a9436c8be14ab0ad8557bca30459f1b05173e60. 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/QZTBA2471551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c71a1eaf306e2e06d8c41274964fe146d43d20ef4438f6f89da47457c5b523. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZTBA2425797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674ef327ac56369433639a8f3ddb9f3c423cb1ed12a0111278e48f7192863e01. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZTBA2471539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4951dccc0742106ed1369292f24432860b35c3a7a7aa9253d7e330121a109d16. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZTBA2425800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12505fd82a05562991e1d580b8b74af43c1068433e7ff48ed2af0e7640c295e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTBA2425803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c63b5621f58cad7eb99ae56fde3d8f672c1c640b582e2397f5af1967cfcc731. 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/QZTBA2423113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af2079c3fbad42d690fc73be4410ca26e3fcb85fa158402c5a9c1fc00437ffb. 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/QZTBA2425813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c843b99dafd34842370f7f69198c7ee4a672f4be997863bc1a0b053ee3e3d2b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:35:52Z), 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/QZTBA2476877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe473b3b8eb06dd1342dd3e5ecf7e9c6b61c52a4636726b41d0264e4986b1d06. 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/QZTBA2479869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2484509c55b9571437a8108aa1707e6b0d9783993d7b8c98ce3bb368468ce167. 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/QZTBA2479950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2406fbaa787a86db5d87d63980fa1e3747d6b2f2261498ff2fdeb5f6ea3b631. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZTBA2479853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bc24aacf5a1ee7e088ab429791df63d8af6189ed518ad7f17c7d7a80fd6f16. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZTBA2479865.