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 0xef9534c8f3538337b9e7b32c87c205979c877a3b1be612e0bec3a4d98b5a00df. 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/74587872-0874-48cc-ae1d-81b2c80f94fe.json and https://artists.proofprofile.net/proofs/artist/74587872-0874-48cc-ae1d-81b2c80f94fe.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 0x1429ebbdc8449b8950126cb94be2ccda9ebb28879ab4fba9d2e412428a33d06e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US23A1551217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71882d0b8caa446adf451c5321a76c0273dbe3a2051b77e230b8a2cd9aa5876. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US23A1551201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4dfd0c7061cc7ec63bebf952cd01a72f5b1b7141069f120fd6deea8bf0ecbc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US23A1554451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1429ebbdc8449b8950126cb94be2ccda9ebb28879ab4fba9d2e412428a33d06e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1551217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e4a4c1cf63d50887f9c540868d0b6108c33bb407053dc3567ce13e60156083. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1548819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bec0a3fd4c4ebf8ed03170fa5b316352670e745658c97a162aed23f66dc9a97. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US23A1534617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccab9c1a32fb13c11e6f8c1b711cadb9590c9bc610d71762424ced9ebe0fe0e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US23A1536931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aeda9c92684e838e4993bff1b2912f31d00fe35455f94684024f05dfecb3fec. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US23A1541616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccab9c1a32fb13c11e6f8c1b711cadb9590c9bc610d71762424ced9ebe0fe0e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US23A1536931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bec0a3fd4c4ebf8ed03170fa5b316352670e745658c97a162aed23f66dc9a97. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US23A1534617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e1a9e1a78c67df68ac81359205b6ae88ba0f7f50eafdabb8fd6533cc9ba020. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPJ32229242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e297f14d126085300d8261b3c98a507051565ad403994f4f05af92cb9c4517. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPJ32232072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ac2900bc609c055fbc203d73967a72d107d1f7a88cf6ff858617c1ebe0b041. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZPJ32236764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69763a3302b08bf10bfb6fa8e30a745716bda267a93aaeb7ea0f56e3291210ae. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZPJ32239360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b45d016185579e8ec4fc9f1655ba3e86b46cd8bf40960ffed7bdf10d3e43792. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZPJ32243862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1f0fd74c8cbe534a0ee51200622357dcaae0a1e21ced3f6c92f68d2bbf90e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZPJ32249080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7334fed893503a92f1c824042e66236844e7d8cc779fcc7bbb902053a13f41. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPJ32255561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fa87dafc2e58ad9c983fe042df6272f0484df60516bf050c0a978cb5afeabd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZPJ32258725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e3734490edd24fc4234a33347bdfacf48804126b8639755ea24828f666c724. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZPJ32261538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7334fed893503a92f1c824042e66236844e7d8cc779fcc7bbb902053a13f41. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZPJ32255561.