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 0xd95eaee2e92bb844b1a475ba3627772123b506a2cdf2c2ebe6bdb919e731fc93. 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/fb57e79a-e455-487f-8869-f22cd67f4122.json and https://artists.proofprofile.net/proofs/artist/fb57e79a-e455-487f-8869-f22cd67f4122.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 0x45c510ad25b6e201ace0739ec2534d5e06e92a660f9d106ba5ecb34050d05a52. 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/QZ5AB2018883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b031fc8773cb3db08ccc87b7ff541deba4c72cd33475b237f442a0b7d17554. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:21:04Z), 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/QZ5AB2018884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c2c573aa7cc11fc06bec3ddc22929dc5464967898d795fe7847bcbf53d2f9e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZ5AB2018885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bac0d08e60c7374a9fb49df9a8fb48e1a7d5e539b8d7fd87c3bbe43f8f16ae3. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:43:45Z), 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/QZ5AB2018886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f9a60465e7b151a3b804f21f750f5431c4c1baeb8d8df8cebcfb981b3e6cf7. 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/QZ5AB2018887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe801bff7f60f8ee18a2634b4b2c4c33e4dd8a2a0fd6dbf81913ab92f38941ada. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZ5AB2018888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d72eb1619c9bc2f06e95c7383cd3fda610b5df352dd02d07feccfd736d8d540. 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/QZ5AB2018889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650f18e00113961011b47a9b4bca34bb503305598485846da68a9c369ed622a8. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZ5AB1946332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d94c1cdadb63e2c2f84511b82cf96a12a3cb6ec7985f6238b04decdabb851. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:44:40Z), 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/QZ5AB1946333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacf485e957efbbe3e9a57593b36a7d1cc859a8f894afa24c25de6b7a2032412. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZ5AB1946336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a04cba88481598e8ef857672e38a83b2e4570df08ef55899fc8f2f3641b6de. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:26Z), 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/QZ5AB1946344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dbe91e94218a9861edd9c1d747d0011e256aab524c08315b7b2a1bee7be71d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BR6AJ1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1d7887bd25926f8c61f0917dbfa3fdccb7c1725aa6967cc1b948cca4f1bab2. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BR6AJ1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2d3947c0bf2fe0ca058924e0e9b22528eb1b5cc1356edf2f114b8395b7550b. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:36:40Z), 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/BR6AJ1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2637390eaff96f469edb98fe4027494d4fc79f8ad829aa455fc186ba6ef1f2f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BR6AJ1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8322d04bb527deeb467e4226d9e01a1235f5210d11724ec0c99b1099c49c823. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRSIC1600065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4539cdd8261991d4576843653efa26896db769b3450c70bd0b3bc535587bfb21. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BRSIC1600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68171b15af42c41744821571909ce1817750150bc85b28f8699ac1995f195eb4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRSIC1600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755e8eebcbaa319544e5524a3f2198dac3924373d2e0df71d63e51ac988002f1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:32:42Z), 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/BRSIC1600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a808c64b3a952e4d69bf38b1c4ba7839b62c81a36bf0c8c06b86bc7573b3dd6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/BRSIC1600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22851b5d2ab85595dfbcead5d59d7dc920dfd4801ea580730f6fc38e0a17cc72. 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/BRSIC1600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d783db87309e2120018e01d002929b35d247e5636aa06e4b36e5d75a8f50baf. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRSIC1600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc27996c8f1b57f8d8f66c01efdd42bb5649c4d38a2ff419b3510ad072fb458. 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/BR6AJ2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2fc626b4ee3cc931c7f96af1e4cd7def0a197801614b38906609ae1979ef34. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BCN092300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77fbaed9ade27cfea89c78ba989526c44b698ed9457bd7e46f43071e61bd973. 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/BR9NO1300009.