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 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 0xae0b695db893174d8413f217604b8de7ce67f529fe3a58804ae1c5344e8f669b. 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/13341656-a2c4-47bb-911b-c2da91d78a3b.json and https://artists.proofprofile.net/proofs/artist/13341656-a2c4-47bb-911b-c2da91d78a3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
King and the Sting : The Album (Original Podcast Soundtrack)
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 0x3ae4e5252f20d240c5f7823f98e4c27ffee04468fd8fb9f708827a35aef2f898. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZNWW2034653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88cf5198d0a88289d89532d5aae3f590c60403e9a8cc507dc3b66fe515d9442. 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/QZNWW2034655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad34d592db9dc34b2ecea449e1b479a54d37827858d7886310b7c1371aba3821. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWW2034656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8317abb0c1102270c827ba1e240d960d10770c9b6f91c585a5bb687f68fac5db. 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/QZFYW2146024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801ac1d9079600bb2137018dc50c2f054c3e5d1fc9ed3c0c5c519ad8c9ae6154. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZHN32176037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268d278bfd4c34a83a2b3ba7581ca5528aaaf634aa45c2236472a19b2688cdd1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZHN42177531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1bd22c8a6d5ddf9d1da8f511d09574f2069fa172c76b750a0e0f1bce5500d3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFZ32244533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409547d0ff0961c98f3e47fbbc24d120f8eece6b0b2292a9330865f23efdd607. 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/QZHN62238247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335e4b887e7fac147cd73031225ac9aff504638bd066d0dd180ec67ed627ceb2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHN32281628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb616d14364dc2fa33fa81da2db5e82ab2dfce9d62103b3a8a396e34cca4ada28. 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/QZHN62238248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32119a9f6a7e24067b527a17ea71f65fc9dbee2044832d948d8f52aa811c71c3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZHN62238249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fea832a00c0558ae494d80c17eae2e367cd155a8b41a829cfbb5db2f06410fc. 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/QZHN62238250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac3c6f3d0cef6711f66a5e16dfc755b463c7e17e8798ec8a197f75ea9e6cd4a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN62238251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8271ccc822a3f2b61352e6a5d395663a6b05d1b781adce4e7b7c4bc094af7771. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZHN62238252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2674019669779d77770f6dc3712cfc03e8ce7960902e80ea6351e98fac037150. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN62238253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156ee569e5d459a9fc38a27c05225e103c08013b356803a20b6cc6b86e8af166. 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/QZHN62238254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda206b0027ff989d6aadcf63c436fc81a4b72d0ef3f13e85c3f4a6f49f01788. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZHN62238255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba1504cb62047e710d5f3ad96df11fe33ad574d2d4f1b952940a6d188d406a5. 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/QZHN62238256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1405b03b29ef8b98968bac53a33db501882cdaa07269c32284ae106dba6deb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZHN62238257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338a9f39f4f36778c21d223ef2f278c8e61e6eced632e5bb05f366c0321664f9. 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/QZHN62238258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94825a1ed567ef6b12f0d3a53325de8f47c8700445e8281cd8e65fe118fe7ca. 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/QZHN62238259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad34d592db9dc34b2ecea449e1b479a54d37827858d7886310b7c1371aba3821. 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/QZNWW2034656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf34dc61d9eb1cd229654b165de8745cd03b5c92c0a696ed8b1042f0caf1442. 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/QZHN62238260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0237ad70b78cea8d518eab5b0729747be04620e6b123204e4e4b5dc42f74691b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZHN62238261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc535df3fe41bb2c8f6e09bfd4af86ae3b3fd69e99d6fbe4ff22453d78d9e3d0f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZRP42306639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f174681baca20f89e00d72bdc5f05956020af9775ed931083ce16c9d66f57ad. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZWFH2391816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f4878153f9063fd5f98edbf2e3301e423f9d732baed2210a92377379d2d463. 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/QZPLS2413643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa12a99a6f040ca765b388912661dfe66a7d7156d444386fa4769270ce88fa01. 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/QZHN92505850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bdc7c4a5be86ba82a9c7e61dc8e1e45eed389762d96024aa90a6499fa0b4b2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6Q2529132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1734bb1b108db5a6eacc1c7519741511975f64351c4eddc953210b4efe00f3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QT3FC2504412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aa044db328985e9a84705e1298f017867bddf85f7c5b5154a8c5a4e0c130f0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZ5AB2352691.