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 0xd5bf1efef633f3a1417263ca9eb08616b9e269d96beff77824ea3e1b66a7c076. 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/a29ccbe7-29f0-48ef-8052-e3443e26a5c3.json and https://artists.proofprofile.net/proofs/artist/a29ccbe7-29f0-48ef-8052-e3443e26a5c3.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 0x13db323a4371fbae99ae42db7ae944202014776833af14cb419e8955b44b0de6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6DC1559310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63eb4e7318ab2c5f715adb6f8ddd4beebf2354224f219af31d42f9199dd27749. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:42:42Z), 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/QM6DC1559319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4239e30ed9ac7c3ea3dac8df10f6724f4ac7c0a0c97dbe2f91dec17d5beffa. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM6DC1750223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa4a2c91beb145d7ef1dea67c78e765e7cb0d31f5371e825cfb41e6eb9ba64c. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QM6DC1750227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd825e069f0b474c862d332dc996387c01fbea07e7fabb6a2aeeb0f9304566af3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:30Z), 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/QM6DC1750229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc69666f489af0b3857dbbfdcccd55675e9d62b02549a4ddcfefc4612be8dba1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6DC1750231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7410c88770c308c1f92dfb53107258ac3018e094dd6d7729343c9f1a0bc83c91. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM6DC1751259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc87669f12c91ab778e2415c1a23ad3d984918aaf284190fc7cdd45bba4b9925. 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/QM6DC1750667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef727d8245ba7bf4fde0b5aaa94d190e933cf3a89e24e23ee467e41a406ee3e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:27:21Z), 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/QM6DC1750668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aefcf974f061b5ce3355177a5dd264d507ec8f80b8053f722d3a95df29127a. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QM6DC1750669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77b5dd2af8814322833874225b46468d73d988fb43c64941a6dcceebb4cffe0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6DC1750670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb009464cdfb3fdf31fe2455811678367271b7c990b2670701d53ef4306977efd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:24Z), 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/QM6DC1750673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c876b45015efb0d46445c0b10278b2786bf3fcdeb69f8ec4cace06d9b167fb1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6DC1750674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4775b93dd9a8ff3033b187d31ceb0e746d22f1527aa21264ae56e2e304e9cc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:59:45Z), 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/QM6DC1750675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5aa426a1ad476810a10c235c9729ea0e6e0f124f7e5f503e1db48c4913f6bd0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6DC1750681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7157ee4d29e02d418bf5d82a660cf46a0c83dc5f719c2f9e86c307a3e94998c7. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:40Z), 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/QM6DC1750682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c0b3fb7fefa8c0f1dea5c4198d13a55fedc71631a5c2101710ec36c8279f4e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM6DC1750683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce47d7768060d29a217fda18ec94297bd0773ec281f509a206ac46ffbf142caf. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM6DC1749049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4685b63061918992c76aae579cab2caa5cfd94cca4f335d25b9e5753d9ca91df. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6DC1749050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf48098bb890a39483e7cb988242e87431d55057b25fd00a1f22236a8351b65f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6DC1749052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f37d01a02e407672ac678b4816ab33616719d92a07b52b40c94782d3fce2cb5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM6DC1749054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bb8d5e066c3c6108017fc37091c52e0b5874903f3ec8452516f04ca8e18061. 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/QM6DC1749189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ae7567272c17cd278e17e2acc73d07c025355538fb576f1621910c2c2dde08. 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/QM6DC1749175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838f7c2c43b490fcfb6e64ea085be60b39dfb2f91815ab3624aa7f3442b884ef. 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/QM6DC2090446.