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 0x6337dbbd3fdfcc1838b8b4864154d1fed862be115cdbce6897329ace07891408. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdc07fde-a174-4a1e-ba39-4e9808473f95.json and https://artists.proofprofile.net/proofs/artist/bdc07fde-a174-4a1e-ba39-4e9808473f95.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 0xaf43294a3ae57b8dfcf4e1011e6e889d0b344daef136c4d5b93a6e958421c090. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:03:39Z), 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/TCAIQ2444270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c0ff39bf74082841f5b4da8394b78eca7092fe441c1e8f43aec4bbef5663ae. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCAIQ2444271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7125bb3a1dfa98c871895912208cda11515fcc80ea545847c60941788d7719. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCAIQ2444276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a52a02aff901f3a7ed632230251c76be5988d1397e2172d1b395ae8f750472. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIQ2444281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6625e5ec323cbc36be258e482023ce30262d9c2768185ff787ab3b72e4e3ed8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIR2444283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ba50b301195c0106ca449584901827c5d4e9fa24663867f932ac4c1cb481e8. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAIQ2444286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff1086b72ae2323cb90a64f61da3ef15427c4d2dbe2b3d4d3273c670cf8415c. 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/TCAIQ2444288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f45abd280c1689e08719f58dfacdb8c877e20d850be14f869e6181022a473f. 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/TCAIQ2444292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b31c2f43be815bd956190afc125ff39c880c43b9545144c7d7d51a181551ac. 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/TCAIU2430372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1408ff2d93088febaf3292042f7d096440d37b8ad4dec6b4e1fc6e125d84cc9. 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/TCAIV2430392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd94a7e9ea2906c9d95e10578523c248f37cb936372e98595342c5e8f31fffe. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIU2430397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036316c7034096f13e55ef6460c32bba34e8c8bb1d6490d3a293b69380b46bef. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAIU2430405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3da58ab68ae9b835887e55801e42428e4ca84bd09f50dddcb7ee600e62b98d4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIV2430413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec93e0a5fc9f60de8c91e9e30adfc193d2f8f6da7a70688d251aa40eefb005e. 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/TCAIU2430420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3a735925f309863f004793dd52860d01d899f226b20ed2d9109c95f97122f5. 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/TCAIU2430425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f67ce9252494909cf80d6691a037d56b669e68de6219f293b7d1e6fab80cdb4. 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/TCAIU2430432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99aa27749e565b4b5dcb7387637cc70b135407baf588e94569251b8d2831f3b5. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/TCAIW2408071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072b3bfe30bc3cdbdd00288db618edc682c8fcb182e916d2a37120d7dbb12a41. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIW2408073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2877cac25a78d654cbd4e9a26aa9bd5aba42973d172cf7dcf56bcc58094f5f40. 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/TCAIW2408076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4db115df84e52910ddd67dc1eb0321747ce4dd67d4bd94a5b02c5883858d711. 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/TCAIW2408079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1298c97a523f62c128a24e350d1b1dfc8df0e2026dbefc85c9ec261b812a69bd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIW2408082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52b8e0a7ef179acc0aea91b18158ed9bee4e7c592e478e67b05b7cbfbf2c0e9. 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/TCAIW2408090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f43b4298c6087e1ad8c484d4ead67fc089a90d0a9c346f5ccf3397222d7a6da. 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/TCAIW2408092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1625b82a70de5807e9cba3b65899cdf8596a9d297eebfe492574dec99efb2a1c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAJA2413796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecec830668dd5f60a8b02cc40d9236e403f5f2e7c88ca89c3c21c5c9bf62ecd. 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/TCAJA2413819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe916e11473e3c6256dc071067834365625fac305d4406337e056ef3f0a25a6ef. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJB2413825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169a3e0eae94ea74b92bcaba19beae27f223551e7bcb513159307055486bde3c. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/TCAJA2413827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7327dfecad3b3644a2788e5e00066b1d6dae4cb52b67cf21079e01d5c1c653b. 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/TCAJA2413833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fafae48e92760931dfd2344789a5b8fab1d473147a54755a77a7caa82b06ea. 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/TCAJA2413837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd042144d43638bdf04b05e21847c517d8ff345897e42f249e5535c6a04c1fa. 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/TCAJA2413840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d31bbf015985ad373ab3acc269af699e4082219e53f797d16d364c349c73de0. 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/TCAJA2413841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8223f86d1b7d074a855237e2e938ce7477cded3e4436802fc631783681b1596d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:19Z), 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/TCAJJ2552684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562f887381eebcb03962768cc69dc8c557e55339d2a3ec36000038782cb1b305. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:13:04Z), 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/TCAJJ2552691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75b5c79288520fe556457321b96559ba2f69a508cd104f06039edf156217a77. 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/TCAJJ2552696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdbe4d0e2f9afc4ea4347b9aa3dddceeffa2d4f00de5c5aa2ff6adcbaceb75c. 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/TCAJJ2552701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946516e1af556b788e7f26a524fb25372075c060ef0b6aeac043d474f0b268b2. 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/TCAJJ2552708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6800a9acf037d15323cc062322ff1032dd9c9e9328557449905da57dddb252. 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/TCAJJ2552713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd9e7a236e233e464d17b7a28c146dab959ff24abda365e08a069c0b4ef25f8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAJJ2552721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dd584e876f1604914c8077d930ef48553ddea48db82c4e26e4c9feb115efa7. 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/TCAJJ2552724.