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 0x9b175e16dc05883aaa1c7bf0fb16aef07dc7180ab0543ed0ab91a639086a06e4. 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/9214a1a9-449e-4fa4-9a08-db143194c573.json and https://artists.proofprofile.net/proofs/artist/9214a1a9-449e-4fa4-9a08-db143194c573.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 0xd86f69f5b384a8273b10e2048be50b96b45e696ba9ad0b02ddd80e969665677f. 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/GBENL2203493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf101c39ee0ea8e1017463138f5427176c380eb744c66ca08277ccab87f87b2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBENL2203494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0170d7c913fe5e30f01069de456f777a8d3affcbe836bffd99c2fc2000187c8a. 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/GBENL2203461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84b73611ee2ee324393505ed5d0aec3efc09abe13e4cf9c2ae81f1645d5c54d. 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/GBENL2203496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe617a79bf3f90e9af201483997c34bab783a58c4f774158d98df70152268cd66. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBENL2203469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10030ba9cd3ee6bca039a53b4a0aea1c9a8508dfa49ec8040cd7e4b9c34bb08d. 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/GBENL2203497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af095738e9d0590a68433871f70183251c20a3b867393cfa04e65c0daf87b90. 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/GBENL2203499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37e736408cec572320c8b285cf48eb166e214fbde8f615ae41c4c2b8ab41e83. 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/GBENL2203378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3bf21fa9d6db6486d7d6d46c0ccbf42ebf4970223ecd4f5e3c248b1b478e60. 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/UKTYC2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b46fecbff88513451270c8db9f67dc600711d26c2e4fc2b0fd01e298e6fa62. 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/UKTYC2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fdba17034590dcde788dac51440e3ba8befcafbaba7ef9771c9d893326325c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKTYC2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe77f2118eb547e65596fe337c8b0ce0ecbce7ec0337c021550cd001679095b5. 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/UKTYC2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda719c0800fae6f7be56be51053736e24c219b5c31072dcd1e240d992a8b5256. 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/UKTYC2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031ae8d5f29a0f579775a5696a8e8057736d60cf8156a6ae3d6c6e6a52b283c7. 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/UKTYC2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cd48a47b1fb240fce6cad682e31e95bf3f448f7070fc6674985ebf2d806903. 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/UKTYC2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57df1ef869f5c68c88b46645cce03ccd436a331aaa352f19c4e3d6db57600edb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBENL2403873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75d687fb4b18eb61071d48e5163a669b7cc1fb9a211c52778d596849712e941. 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/GBENL2403874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe776037d95a25e6b80a7198963bf5a2c3faad3fe8ed7acedc01cf8fe6ce1c73b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBENL2303820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67752fe8399a60873220b37216ff10ca379b1484d27d6bd6e5f93053dbc0138d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBENL2403875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa3fc68df166a8c48e8b1ba62b2519b0326ec32587be06049b4c297183ae887. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBENL2403876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc00a68b4d3c835510ac05d0d4501853afa29c4074e2ab498da7f9eb78914da. 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/GBENL2403877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75d687fb4b18eb61071d48e5163a669b7cc1fb9a211c52778d596849712e941. 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/GBENL2403874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe776037d95a25e6b80a7198963bf5a2c3faad3fe8ed7acedc01cf8fe6ce1c73b. 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/GBENL2303820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe776037d95a25e6b80a7198963bf5a2c3faad3fe8ed7acedc01cf8fe6ce1c73b. 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/GBENL2303820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74f3692e9d2f1211a208b31944234029a6113d67e787e2255107b53ae01e537. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBENL2303777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0312ea0839aff02bbc9675c61855b3104f36ff374a306e12427d338ced884f3. 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/GBENL2303778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31349a0127a9ed8e4f8960f5457fdcd84851385763912310e25d6ed881698efb. 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/GBENL2303591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe617a79bf3f90e9af201483997c34bab783a58c4f774158d98df70152268cd66. 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/GBENL2203469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0170d7c913fe5e30f01069de456f777a8d3affcbe836bffd99c2fc2000187c8a. 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/GBENL2203461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c65b5a8e89db6da4c6ef0365097cce98b54f70a3534245e9a77604d2d65f379. 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/GBENL2203462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37e736408cec572320c8b285cf48eb166e214fbde8f615ae41c4c2b8ab41e83. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBENL2203378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4f4f405f1c9f5fcba32a01de3ee7ca6790990e813cd0eb624db2275edc8033. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBENL2203379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dc00f2dd746eaec2b71addbc560f410805e263edca44903cdde5df59c5074b. 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/UKTYC2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370656d74d937554348311ecb6bc71c31d062c13097ecf3600fa6a36880c4fb0. 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/TCAFS2127632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15b538bc1ee893f230b90c6886cead3f5f5bca36116cbba0214ac14d83e8080. 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/UKTYC2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031ae8d5f29a0f579775a5696a8e8057736d60cf8156a6ae3d6c6e6a52b283c7. 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/UKTYC2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b46fecbff88513451270c8db9f67dc600711d26c2e4fc2b0fd01e298e6fa62. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:48:43Z), 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/UKTYC2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fdba17034590dcde788dac51440e3ba8befcafbaba7ef9771c9d893326325c. 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/UKTYC2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5887431ac6b7dade26e33590ebbd09053a877555b8b222ed01524fc136584c. 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/TCADW1809171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7805ec6c41a3e0bf7bfb8e8b353b1b4470d9924412e6f83fc1e625a64ac5516. 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/TCADG1747249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a117c42736101a2893eaeb64570973a6e7ab2a21cde01f1e7ad50df408e4df0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCADO1819045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23e385411a6092d0e9b1b09f5b0eb7037bb18533fa79dc8cdc31c0d294f4b67. 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/QMB622401604.