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 0x211182c73cf2a87d9fa10f6308717c7cc56c27710e34585f1794624e2075030f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54cf1f99-0ff2-4433-a00e-ba1c577e17b3.json and https://artists.proofprofile.net/proofs/artist/54cf1f99-0ff2-4433-a00e-ba1c577e17b3.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 0x0eac5582062e1e2c169cc3236eb9284b80bf00acbb53fb0bd73e611747c747b1. 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/GXF972542443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720395b8af4389cf9df6e2a7dd8a76c6169b83b09f39df142f72f6f65c6e6126. 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/GXF972557560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd6b7c2e0f68320c0b4aba4b5cee8ea57b50b3c1b19cb3a84a616e15734d05d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:18Z), 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/GXF972560144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ada4df157806d64e7d74df690608f25397ccdb21bf59ed243c780aee4a3afd. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:13Z), 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/GXF972582335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7610e8ffdcc88a119a3d2ad9776260add68e20d4ee234e51490194a6c9b539bf. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:24:33Z), 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/GXF972518390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbdcef1cccc9ae5aeaf0d3fee6697ef413081509dd672ddf23f2189c6ac4210. 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/GXF972556984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd606d089126fa762e1e566f101031c8078b014a8796618b08ce46c41907b32. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GXF972593566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf656d8ca51fd09c53c750922263f6f95c707c5096e02a0376d1c16ea7641d0a6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GXF972504455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c10cfd07a860f2ef585fefc85e25491e0e05bd2e0f6f8db25ef0ca214a99ae0. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GXF972566048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf82c915640e0e1ca6d60cdb9576d109766b48841df4f01452c92ea322d73623. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/GXF972570894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08256c793ae7dcaeb0e0c19fd1f597203d406fc81b9d2aacf55ae87497dfb792. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:40:35Z), 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/GXF972509058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d13a0ee652b0e9d024acd952f5bc30d119000981233517b604c744dd31873a3. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/GXF972595471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7c73df12d351958bfcf930b119af651573be5a627fca066f4273004b61eeea. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GXF972511757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e32cc3a8ec8e6867ea73519d8fa416d1fbf331bfe921daae4e30e76cdcf36ec. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GXF972502332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e1d3c4f0300b932c1a0e6c85c869e344906ccde748e0793997a7c13a936ea0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:45:43Z), 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/GXF972583587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5da7317ed6d529a6e7e97c216c31eddbbef6fc226a37c64573f831ca2f7ff2e. 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/GXF972556929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff2bc3b9b41bb5fa85f4df85047f165a2f2c0f07c30b91abccd851d3114ca2e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/GXF972544628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a887fbe599f319268c419f94a293028b0a6e03cf280c2b1a52786dfd133e6e2. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:36:58Z), 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/GXF972585040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e67929460bee9841e45ff75aaa0965d00792249f0cd542901c4d7150503e32. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:56:51Z), 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/GXF972594506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36be554c230b6caee79f318c0c74d7ee4be5ff98e680dc0cc98833b91993baa9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:14Z), 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/GXF972560254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3c7335c8a442b7e9515c8e18a8131c902f23a5846b806eeaa01b9b30f2c81f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXF972569951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa572f0b9641b9dcb5b9c4d77977b514b0a42752e88d6843c2f2ce6995d2d095e. 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/GXF972566142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe46322209a3b6044709625c93ac5702421ccbc0d9ce29c56ecc62c6af8b9299. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GXF972551917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe760299ea587c24f7c86a1d288391ac1725be43e4d42eaaf9bc76476bc3320f0. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:04Z), 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/GXF972572925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00421ef4cec21b43b7c0d9749212462230050603a3e58c6088296a351954b391. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GXF972538522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763b9b12fd8b39b6ef21fe52f0b8be092f96eebef20c9a71b63e7feb39ac6e3c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:36:54Z), 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/GXF972570234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdea63b7ce2e24f79a490a97160183936447ec9f543f6661fd94b759da734f4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXF972565724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e209252fd4a8dedf66e490b316058f9544d602da74a23094e7af5c1685356ed. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXF972537101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d3ec90da883890cdd8aa52e4b5ee6542a5dc9b0790c3af9aefc1d2032a6736. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/GXF972578423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572118fa57c6874adf2a669ded56664209c3d8683368c566a25f4094e395aa68. 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/GXF972542963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dc381506bccdc4c708a293af495c43d42bf03b420c3924e618e29d8ee105b3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXF972502199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70188ae7db6d7e81adfa1f2645d5522505bfc249d95c43f3e926f574c3d0e7d3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GXF972503968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac63fb1628b28fcbe43489c91369fe203c2e27454d952e194e334a25111919a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GXF972564810.