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 0x62ea7e70f9285797d205d6edee30154ceed306fe5ede9e707b338a4ff967dbab. 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/55bd5652-eb1c-42a8-ac95-12fcf069ec34.json and https://artists.proofprofile.net/proofs/artist/55bd5652-eb1c-42a8-ac95-12fcf069ec34.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 0x28d119c61b8ac4dd6a91591dc37d25112fa980d6df7c40738135e715533f7bb9. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCJPT2230228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa301e6c7faf3635d687b72ab4fccb8eafc0899e509fc56eca8fd42614989c741. 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/TCJPT2230578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4822519b7e1a16e301ac6369772fe582b27fef7931ef7d2c0a3bfc6370c205. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:47:59Z), 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/TCJPT2248259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349f62f2ea1e7e0590e02b5dae36cdc51127f586b70a715c0718c52386378b12. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPT2248290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc964082ad2af09484d87036c57f11a19c4c897928229fc3d234e63e2411e6de2. 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/TCJPV2301739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032bf9dc2a23f622fe4b2de5caf9413556c0b7efc19419538e017563bae400cb. 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/TCJPV2379802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d32cf72212e5b68271e05e0a27e33409937be0b966556ffc3a801af7d9e62d. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPX2358977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1de7ca049b42544859c4bda930072c9b405ef6d3dc8fb09032054c1d87c8e8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:01:00Z), 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/TCJPX2358999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e54e367ec6bbe45a3a903c5c6046befb633bd3eb3e6a9e2105d3d40b39eab5d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:56:04Z), 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/TCJPX2359004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d863c4ef9b8e0eea39193676c1a56f6360eaf0820bdd0cdcaa3340a97a480. 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/TCJPX2359006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd748a31fcbd905f9d23a770950fd600aaafef2dd560b69c3d6e90cd28034e5f. 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/TCJPX2359020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9335459c75d0f27955b678751f543fa1b1c5bdbc47ee0b2d6a0721126e0ad13c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPX2359023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b6ed6b09887d3930fb70cf0c11eee86e70163cafedaa088d7dc1b84875bac4. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:50:09Z), 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/TCJPX2359025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36441f5d14474eacb49ee4fb42564605888883bab784f727819c407c6e17fa9. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:10:39Z), 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/TCJPX2359028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11797483f873a549ac84bf73a8528d099b0ab000d4afc5043c7c5662d3bb6ccc. 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/TCJPX2359033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898a862234edefd4e1537512298ac58e00bbaeabf9799714935c8a7ccec90edd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:45Z), 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/TCJPY2315543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfe9900ec44d6f1524661b1258561fbf89b3dc9702fb927f261074608836605. 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/TCJPY2351351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8fb988a1058f96306f01b90f568fdeddf852fd2ed8cfe5075232975271763c. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/TCJPY2477225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef1b96002a233e8ad3e4e8d37499b0f21d3ae24f7b620d6cece3a149eab9138. 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/TCJPY2480832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a4b8e809d2922089ee57f79b6fbe40d822f1b42a22b98dede8aef649319d88. 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/TCJPY2480839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf29227cba9492e96c12b0aed966e09fbddc6621c9ab1a1622815cc5901320f8. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCJPY2480840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcdec1ee8a7193bc16e9d50fce5a81ba8107c72987bdc219b47320cb3085fda. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCJPZ2499188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2a181f6a41a26f28670bb4f41d40c9c5f17db0680266bc4eb1999de56ab561. 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/TCJPA2437960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e29b8b562d3ab9bb84f3216c484d67d262f4fa26af37b042ef2660956f296b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCJPB2425074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdc2b80c3b768df7ffbdc4f24dc18fcce30d12da497ab4115fa3c7db3a05a08. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:44:41Z), 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/TCJPB2475189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8d21ced5131344388c2563e9e2a1437953e3163cf894830391f6137ba21c4d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:49Z), 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/TCJPC2449787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b179f41fc8e978fcf9668b9a5edff29f1d9625cf0769ca8e78797c39e0f873. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/TCJPG2517421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbe305614ea4bd6c30372f2b773d12cc730bcac629072f37ae53fe70553c6b2. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCJPG2517426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611f1602fbba252e537f0de605b5a2bc88eaf9e6a2989dff9fddd261e02513b1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPH2518887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0e6201a46544827a2101d175170c9f6e3d7c145132824defec287412000334. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCJPH2518901.