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 0x43b039e714f06870d94a686da3d35c18ba90608a2bd81b4466c5715458a576b7. 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/19d272c8-08cc-4cc2-a8da-a9e433f69f09.json and https://artists.proofprofile.net/proofs/artist/19d272c8-08cc-4cc2-a8da-a9e433f69f09.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 0x31b4b82824b5fa48f47e0aeda54da83f57865f4fc5287e1a044d44e339189380. 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/AUBEC2579432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16eb68d98a10096a0d39a42d98ab8ee207cc30bb074ece17eacbb4b42d31dc56. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUBEC2579433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6446a8c6bc456a65048bcb86d9b06ad1c0f526ac7d9ac4de898d8fdd090e209. 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/AUBEC2579434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387e6392aa26567678545fc1f187ef6070e942c93dc45f4679a736c89bbbab03. 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/AUBEC2579435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ff6a4ebd2dc561d9109ff7b4b1e3097860ede4be687f7ec1e505ebaff47473. 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/AUBEC2579436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0556c4fd2b8dc3cda47718bb6c4c57d2147a7a5f0acb9ca7cc0ac130a7874067. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/AUBEC2579437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2ef550a850c4c9de647020ab51a306298d082896d4beba5426af56aa306f20. 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/AUBEC2579438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5909d1ef4f0f9e938ada2fd7961cc22c54e7227b9350c6135be15d474651b7. 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/AUBEC2579439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7b71ccbc001eb300cd8cb3048c68b537781de6bd2c9cd6afe6a459dfa9eccb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:41Z), 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/AUBEC2579440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eeff65b1457cf3aab2ec87816ca49343c6e3f96d1bdaf7825840cfdaa9ca9f. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:32Z), 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/AUBEC2579441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dce44e422b8af49e5643e4798c7e9e78628fd63c0633159ef1532ab561804a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/AUBEC2579442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2946af51adaf500394e080cc447f4f4148a352adc47ea2183676382353d4f860. 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/AUBEC2579443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a543fdbc866e0a1954f8e9f2b9f28f6c24986a49473f426bd1c7903d6ede76. 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/AUBEC2579444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0f770876b37c6f592b5411a1b5ee4d2ca3e1e1a48b3f044b1a4687fd56d9a4. 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/AUBEC2579445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8f73a615da463fd83b6927d9e8d1a67b734523fb3d1ef3f9fabbeac38d3bb1. 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/AUBEC2579446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cca80090e530208fe40e8cead752e8829a5f989c44bbe18715b71489a20a12. 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/AUBEC2579447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad768d43a8d97408c619cbdbd0140b9a76f9ab7db39ce4fc5c591332c4249f6. 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/AUBEC2579448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a55aacb7b1703154376cb104f7d439cba2ad6bb0201ca266c061241c13ef70. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUBEC2579449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0760ac3c13af152b5a1d4af45d0a1094e3ccefde2f04017ea94c0dd58232b669. 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/AUBEC2579450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e5d326dc73751d22d1ea43d42272c65981000c8d3f813297eafeca95b328a9. 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/AUBEC2579451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1e3538772f54588f44b22f85cac3dfa215c2a704d75313255d8bcf7b694134. 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/AUBEC2579452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5457be7abab5daa0801c65d1be3d486da8de6944507499fd9abe03be3a90bc5c. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/AUBEC2579453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11c12351048e667056d6b45dd8a7f97f171769402a6c82b0f7f959179005fce. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:50Z), 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/AUBEC2579454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4ee28f0bfb5eba2b516da770fab65a985acdcbba901a2f517c62d1e518e151. 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/AUBEC2579455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec57c7a23aa4499a86faed3a11cca554c751885a48b5c036d5d01e8b09cf0f14. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AUBEC2579456.