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 0x4e90ae36146f02f6284f20681326eee817d384abe8f011e07282e562c589dbfa. 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/bf8cc5b5-230b-468e-810a-b8582eb63a6e.json and https://artists.proofprofile.net/proofs/artist/bf8cc5b5-230b-468e-810a-b8582eb63a6e.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 0x89a0f8630b815d816c48cf0e03fdae6ea500a0bec88767d2d903c56c438aedd3. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:27:49Z), 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/TCAGY2312841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812e49db58134503c7aac05a6c02b2e5a38b67a7cd4bf94476cc565ba6a23eb8. 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/TCAHZ2482294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985602925851bc07a9fdd63413f39534dd676f9ddec75858f88b4d42ad7d7dd1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNWP2450949.
Can't Sleep, Eh? (Field of Flooded Timber)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d6d57e400d875c83de29188fdbe68c18971638b7666ebe65e2a6aa45f99f9a. 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/QZNWP2451299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812e49db58134503c7aac05a6c02b2e5a38b67a7cd4bf94476cc565ba6a23eb8. 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/TCAHZ2482294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985602925851bc07a9fdd63413f39534dd676f9ddec75858f88b4d42ad7d7dd1. 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/QZNWP2450949.
Can't Sleep, Eh? (White Pine Planetarium)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f87c0ca5afd7fb0e75e9c747b90bd6e65bbb4ea272712f837ca5092734225cc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWP2551607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d6d57e400d875c83de29188fdbe68c18971638b7666ebe65e2a6aa45f99f9a. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZNWP2451299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812e49db58134503c7aac05a6c02b2e5a38b67a7cd4bf94476cc565ba6a23eb8. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:48:52Z), 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/TCAHZ2482294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d6d57e400d875c83de29188fdbe68c18971638b7666ebe65e2a6aa45f99f9a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWP2451299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812e49db58134503c7aac05a6c02b2e5a38b67a7cd4bf94476cc565ba6a23eb8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:50:51Z), 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/TCAHZ2482294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985602925851bc07a9fdd63413f39534dd676f9ddec75858f88b4d42ad7d7dd1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:57:35Z), 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/QZNWP2450949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d2152d95a4223e47f26cf33babee96eed52c730856b2c34591d55a387ed9be. 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/QZNWP2551608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f87c0ca5afd7fb0e75e9c747b90bd6e65bbb4ea272712f837ca5092734225cc. 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/QZNWP2551607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbcc2de4a9538340dadfaf7e63b85fd51a7a3e5e29dcdcc26592f59289f566f. 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/QZNWP2551443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d6d57e400d875c83de29188fdbe68c18971638b7666ebe65e2a6aa45f99f9a. 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/QZNWP2451299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812e49db58134503c7aac05a6c02b2e5a38b67a7cd4bf94476cc565ba6a23eb8. 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/TCAHZ2482294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985602925851bc07a9fdd63413f39534dd676f9ddec75858f88b4d42ad7d7dd1. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZNWP2450949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa204ab8a3eddcec9459f47a1aef16c3c065aec6b86e46425e5236f5f69eca965. 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/QZNWP2551610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d2152d95a4223e47f26cf33babee96eed52c730856b2c34591d55a387ed9be. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZNWP2551608.
Can't Sleep, Eh? (The Great Monarch Migration)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933534d6b690188064eab7bc8c95dd65b4b301c0c7e09ff9a5abf5a750ac5c54. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:30Z), 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/QZNWP2551815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee58e98e7539250a371c6da88a22f9ff8532947685d67802e30a3dc8bfb9bda4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWP2551814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120334ffbd921270f3a7ce24cae764f8f5050c9a3267a243e4f5c1a533b19dff. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:33Z), 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/QZNWP2551609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d2152d95a4223e47f26cf33babee96eed52c730856b2c34591d55a387ed9be. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWP2551608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f87c0ca5afd7fb0e75e9c747b90bd6e65bbb4ea272712f837ca5092734225cc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWP2551607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbcc2de4a9538340dadfaf7e63b85fd51a7a3e5e29dcdcc26592f59289f566f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWP2551443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d6d57e400d875c83de29188fdbe68c18971638b7666ebe65e2a6aa45f99f9a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:47:20Z), 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/QZNWP2451299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812e49db58134503c7aac05a6c02b2e5a38b67a7cd4bf94476cc565ba6a23eb8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAHZ2482294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985602925851bc07a9fdd63413f39534dd676f9ddec75858f88b4d42ad7d7dd1. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:08:59Z), 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/QZNWP2450949.