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 0x67618c0230ce9e78a39a6a1d0d70b30a00836819353d15474b8c1511035cf31e. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b305863-869c-4188-a96e-83ab9e6e5314.json and https://artists.proofprofile.net/proofs/artist/0b305863-869c-4188-a96e-83ab9e6e5314.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 0xf0da5943a35bbc2d77a8cb0dd82d42683749dd8be78776ade3f8fcb5c22868fb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOXGK0101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de4532502ee009a6a691e3c6bedcb8db05ced062eeaa3486d9206f6fd6eaf59. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOXGK0101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99321a3c162cad580a2a48b87c0f31e505dfee1f7efb3179ca54c5fbe4a03d1f. 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/NOXGK0101007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d45467144bd9e56a8da0c48d7b48852d0b5bb4724aad5049ef91e2680fb8c12. 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/NOXGK0101008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568608dafbe8d573adb969f5560634c6933c7b8bc217ed62b41b9ffd752995be. 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/NOXGK0101001.
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 0xfc210dae12fa9c4a4e6e012c2b458dcd3b8dcec8ce4a221bb42a288b784a5bd4. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/NOXGK0101011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21e29c9941f2c41d54ee182f469b8394156d8296bebbabefe6be682f256d0d9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOX9X3995910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f94e4f0d6e58d452d472354629020a847fa71825bf0895a05208c1a02b2970. 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/NOX9X3995917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5513c87fba00a1bde3cc6d40182ce930fdbfdabe65591fa5744a167727bf22f0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NOX9X3995904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0dd23d793bad9ffb25fb947364bd0b6768b21cb080a87f58f62fae3087767a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NOX9X3995906.
Du Skal Ha Flaks For Å Flire, Du Skal Ha Tur For Å Ta Trikk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7495c634cc6407cfc282572d94331199674f92d9ebc0a62f030312390e2cbb10. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOUM71400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9d77100010b317c58453a40e571095a42488d8ffecd69bcac407a8ed3fbbca. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOUM71400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0e47e8776ddfd5a435f15860b3874109674cebab412f09ed21dc74c911e6e4. 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/NOUM71400378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af02ba260c5e9d93a6c82ee6e2db2c47287bf1b19a61c7dee2ed2ed09f3c2d5. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/NOUM71400381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80076cfe2f7bd0f8c8304c4b2068cdd341b3b43a250c4f2d4a60489a4e09de9b. 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/NOUM71200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797e5d56fabcb15b2ad8a25597e95dfb9e8476a3dd57afcbfa7cbde3bf5255a9. 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/NOUM71200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a9c84b688d4609248fd76956c8cbbe6f5583318e48eb6c28b056df3a49ed26. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOXGK1201010.
Woodys Verden: En Hyllest Til Woody Guthrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f5a2a9f60088bc23f644a29b96c57b0d9269f7ceda87ee59d3100c5d956e90. 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/NOVBP1224030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602e421e23c1c44c522e644f826e3b4f9d947dc7a9f495f66886e770b0418af1. 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/NOVBP1224040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d3e19b4bcb6a606b33480203a51c9645b6eb5ce232bbf1a29aaffe8799360c. 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/NOVBP1224070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032ee6dc234c311667fee7b1bbfaca99e426837588b812cbbf3bec6232cad9bf. 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/NOVBP1224100.