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 0x3e642b94ea3002d8124b29726fa7116ea2eadbc53582d9fbd8bba441254129b9. 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/be7e1be5-ba32-4f41-b443-bc4598a12d2a.json and https://artists.proofprofile.net/proofs/artist/be7e1be5-ba32-4f41-b443-bc4598a12d2a.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 0xba23db6815a358ea6959926d8844f8b57bf8630027845e5e1087389bd3f17795. 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/FR9W12421689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cad3a682b5ec776c629325553fa746baf80e8ef9acbf7deedee73e88226028. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12421691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324c4ae87007df2e53fca5a75733dcd4b89fe369ef7fb252b2097ef898e53e2d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W12421693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c10c3e417f56d586872b23c0d447f4f4671d7c01e55a7a0fe4a5af4e0abf3ac. 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/FR9W12421694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935802bbc5f6f5646a8952cdec12145abf1a566e96027ca5f8277ee30c3da8a1. 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/FR9W12329103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4e5392fd95ff80c5ea8a7d6b8203b276e652f54e45064d8aa72f9fc4da29bb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12421675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9448854beed3339d502c7e9c74db3232d9eeb488fd717451d5aaabb9424bb9f0. 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/FR9W12421676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9448854beed3339d502c7e9c74db3232d9eeb488fd717451d5aaabb9424bb9f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12421676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4e5392fd95ff80c5ea8a7d6b8203b276e652f54e45064d8aa72f9fc4da29bb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12421675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c10c3e417f56d586872b23c0d447f4f4671d7c01e55a7a0fe4a5af4e0abf3ac. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:35:09Z), 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/FR9W12421694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324c4ae87007df2e53fca5a75733dcd4b89fe369ef7fb252b2097ef898e53e2d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR9W12421693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818f09d38594872e79540c97e199b82735b38b32efbac6243b491fc3abaa3c7b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9W12421718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79e6ab9e7e2c7741604be48aec52c20e83948a487ffd87b6c46ae7018b477d6. 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/FR9W12421719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d2e9e190e25296c1d008d42fcc5e62c42ebfbde0e195ef02164e058f9cee84. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR9W12421720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7db7bc9e16cd7e84b2121c0587dcbfd8a265fba96eb1fb40138bed2bd89c579. 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/FR9W12421721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d2e9e190e25296c1d008d42fcc5e62c42ebfbde0e195ef02164e058f9cee84. 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/FR9W12421720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818f09d38594872e79540c97e199b82735b38b32efbac6243b491fc3abaa3c7b. 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/FR9W12421718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7db7bc9e16cd7e84b2121c0587dcbfd8a265fba96eb1fb40138bed2bd89c579. 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/FR9W12421721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79e6ab9e7e2c7741604be48aec52c20e83948a487ffd87b6c46ae7018b477d6. 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/FR9W12421719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935802bbc5f6f5646a8952cdec12145abf1a566e96027ca5f8277ee30c3da8a1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W12329103.