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 0xa725d0e3a9940fdc8a786a4b7f32c874a71b54249bf44beb346ddd8a5a027593. 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/a3459766-0de4-44bc-8178-3855947d60b8.json and https://artists.proofprofile.net/proofs/artist/a3459766-0de4-44bc-8178-3855947d60b8.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 0x41c320191c80e8dd66958b78c202d428321f3fdff54ccb71ba4e9fb4a7373518. 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/QZWFQ2326927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe878aaaba85f4379272841e2e6e8ec2b44519906380b087f26330c5cc6d2fd6e. 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/QZWFQ2326928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d09d0ea3c421de582088bbf94a967cd795ae1065a8f5362c6120f66a8a9960. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZWFQ2326929.
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 0x0748431ab8863afa0461b585ff193f66e3769fb6ceb880b375be4cf8e86041da. 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/QZWFQ2360638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4afa92184bc2a4dee65ad64dc3b03c6053b930388b31d7db7cd7acf7390fda7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB82366765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3052a32ea0b354aea267a2b6ffd60b67cce7f87dcde91057e11b8268b5c232c. 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/QZMEP2344433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fb76a298f3266f31ce99b741861bfb7df2ab981a63ff3e37a46bfe3f259507. 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/QZMEP2344434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bbaf0e0fbec04d660923f83567869ed4a55deca792509ee6f3bd25f98f1805. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:24:31Z), 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/QZHN92306964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305f1455d5b6dd24f499c4d1d62ddb62f153f2862e00616b8740aa4de5d6100e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES82320296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b4bc30fc86ce80fb49e95d3f44ad9816c100c82b4521dcdda82664999b1993. 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/QZFZ42372231.
Scary But Beautiful (The Acoustic) [Live Acoustic]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf14b7169b269426b5b2586a2ba81b36e0be7dc8c65fb9f6070a512ec1f311d4. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZK6J2098927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb635b3273a05f0702dd526374b59556a7b87eab1d04148ec89a182ed594205. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZK6J2098928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad546826d40f2405e60c45b6e611865960aa05b35c33a73de9e30ce1ff5a995. 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/QZHN92027516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a8cf0bfc3b6b055b770d3eaa144e94dbb012071a6514034a8899bb2e4e1c1c. 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/AUMEV2459227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9657777b944ba8d03238eb28d5e9afaffa22e1d72c6d67b2c8bdd7109b9a0d79. 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/AUMEV2442196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9934471047b4dd3a5c5443c4b97ce625e7817c7712084194ad42b239d4a6815. 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/AUMEV2428785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d4f210dfbbf34d28d9ed8218c261936ca71ffe44f21474f262b120d164d6f4. 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/AUMEV2459234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25c928dd6eb2cd8ebc6ea3ed96b7fdbf5eeb3c83e73ee5e4767c7bc96251459. 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/AUMEV2459235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee3292e535e764f406859cb09bc33c936dda2c211ad00d99afbbb7ca015e990. 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/AUMEV2411643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7110165c989ecb9807d96243fadb9df0b18b07e8bf7901dd7f9b6fbd586211. 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/AUMEV2459237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b54f510bef88288fb83262ebeb0832396d6e372082d8690ec9d1b683140fe5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUMEV2459238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f3dde81027cd438e965ba749737a04e3c0640720da2e5d11d96aae018b5d09. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMEM2362960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdd4d80386270df22deda26293d386605a56c611871bd02fda6889df0de7681. 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/QZK6H2385054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c2ff7205675838b0f0d6a897d1feb4e95e525dd754a4e71f6e3f0714e30c76. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMEM2362961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b14cbd6c117d0435c005e8e6c47b5bd6c11f25e61f499e41aede7f32f6de575. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMEM2362962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f98c605263b7d9587033fbfc8e3681095279c2838b5c462ea0d1f028329e08. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMEM2362963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1255af90af0cbef9d56086442f2fb1728f4ad040c0c5a137b8cddf799aae940b. 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/QZMEM2362964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2876a2e41925ac9cb91999b2e209d47729f78fc0b52f4b64ae7807fe4dc203. 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/QZMEM2362965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa543588ed4ee9c41f6b1ef991f2ea65d29e9ae1c731eba090555db2a1f500c8f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZMEM2362967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f3d0ab7e68a1b20bd136f0d782f3ac31c17dc0cd2a61e7134cebc1e4582c5c. 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/TCAFS2130890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550e86437eec02d2a72102b21d3c895c73f33371ec58ac2e066fb67692a7bcee. 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/TCAFT2168660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140d84abbb3369877a585813f8f47cbacdc51419ff3daab18530a13fcc2dd6d9. 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/TCAFT2168661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e3b8885273a40d25d6f1ffba06e291162e613a9bfdc0f5daa2e333e0a70911. 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/TCAFT2168700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c6a9fce841d426c3a285bcf4fafe911156b78a826cf710c12ab9ef648e0a07. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAFT2168725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaf3f3228107f4d6dda11400b9fdc6752d89acd3a534980e30598782f0d41b2. 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/QZRP42102904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5857dace9e32aaba1cf6ea8d0fda29a7d1d85a62db33aea2614cbd6289c9655. 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/QZRP42102909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb6538b9b5ac051bb0367ae2888a6f19fe9bd7a8137e405ac6b95fd2fcd19de. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZRP42102907.