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 0xdb2b5f1be02c7cad37fa1019357f6cd5c50abc906389e47f5953fa3a60487b49. 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/ae2056f2-cf30-48c5-8a95-c25d239eccef.json and https://artists.proofprofile.net/proofs/artist/ae2056f2-cf30-48c5-8a95-c25d239eccef.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 0xe3f3fbd5e8cc9f2ec9578cab3afbf7f3f274cf37eafdad2cb7384f3b718ae7c8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCADO1821180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e3660b35b642272ffe06078fdd77e6e7f1bdbd6312770331ead70fecbeeec5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:09:41Z), 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/TCADO1821183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40c99686040392dabc065029f50365dba1152f5e0860986d440f1bb23f98aaf. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/TCADO1821186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb662b18e061729c8709ff4d497ad994b99bee2c751f31bb9497ed942ed7bb001. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/TCADO1821189.
I Was Chasing a Firefly to Light My Way Home but Then I Got Lost into the Forest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516aeec351ce6556db8f837cfa095ebba6c02144f6cf26de1ea5e8390250fe5b. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCADO1821191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a3364f566d27078566050bd07cbe3162cc2460a4ba0f81f92425d143f5ecc9. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:18:54Z), 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/TCADO1821193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78db55af09915b1ea2ed2b081cc0cddf8fc2631ea5e50fcffee1feed1673a884. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/TCADO1821209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc614457960409e547579a59cde04d662f2bb00f30b16701a477c31dd7fe67bbd. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:08:57Z), 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/TCADO1821211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba25003fe93d7576988d16e8cd95a17c69e74bcf30cfb61ce1b6854a2c6c7ed1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR9Z61800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5540420e7c6d9194f59fa08a6786152e5e2d8d9e210b322af7420df8822c0f. 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/QM42K1868148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f5da965c31694fd9738bea54b2c9856e7d77d6986551a03f148aa97b978864. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QM24S1827023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81af9f7deaaf154ec5cc791ddc4888def9f64b6d73d9f858b3f763e34bc9bee. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM42K1833804.
The Strange Thing That Happened to Clara Last Night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba348312ed30dcdaa53e0e3e915a0334b9c7be846c1d3059fb1cb98bc992c52. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US3DF2229747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1975b125094649fd817a1df7abc8be58064313494d1612ee22f41b5756616f5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCD4N2400066.
the world is painfully more pragmatic than we like to believe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7aa2e19f095f7c4acb01492d2b6014747013ebbe3f4c0896adf235317114c. 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/DGA0M2434380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b26f9c9c084cf8e72ec99eff8a74e488d986226cf3899f44dc996a226db80b. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:29:36Z), 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/BCD4N2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2ed7c2e868fca0deeab1f3896a9b6a90afdef691a72308daba9a6624758ac4. 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/GBKQU1916707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f69b75cf4248e84ac34807bd9495acaba5ad03b6c084d1710984c30c6811ff. 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/TCAES2036576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ef69db4dc72063dd4594ff2251ca98a2e416c782297569a67080cd8cd487d6. 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/USANG2029053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0580bd1c72e5ecf554e802f47b1a1b24cbdef2438ee0dc1a3500d5d9716934c. 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/USANG2057923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148a8b19e821747bed3205052706f6c2850fc09cb34f908ab6286275c1fcc730. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATUM42100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c240d90f3dd929eb62416bfb2fa5ded53bef415f64964ae1fe975ecca2947d. 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/GBLV62204916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f271329758072e1e2470094eef0d8f0064c6ab48a9c5c1f9ab61a2f58e29cc. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR9Z62100091.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2308fc9cf2c1dbad52c3f0c78892e8e59f42d525ad7541c8018a51d207e4061f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US3DF1998683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91962133d43e3ab4025f096147f049c58949db40f00dfb56c32e4c602e6d5a7b. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USANG1924973.