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 0xd310a2b8af846a7f2232575a1b5f7ac33e85fd3cff4f647307c43d63573e018b. 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/a2fd5133-d05a-4681-8638-28c3189a02b2.json and https://artists.proofprofile.net/proofs/artist/a2fd5133-d05a-4681-8638-28c3189a02b2.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 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 0x094dfdf327214f51ac8308515451dcda9bbd54a5f8ceeb57f0ae0c5e0bf05c3a. 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/DKABA0510207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0567bb40fbdd3d2c3efcb809db1a6456285d23405c66dec19d403e69c6cabf9d. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DKABA0510210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba417d1096d68d0cbe000612e4cce83b8b45a11dcf7aa19146c08ff11ca1a54. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DKABA0900712.
Jeg tror det' bli'r en kold, kold vinter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e95e9a38dc8be3c698eeb9e5692dcc3ea65dafe438e6782694501977a9941f1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DKABA0900714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051e39caa402c35c4c739a8335539ae9beeb10089054d5c20ca4fe8190aafd53. 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/DKABA0900715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493f38cbcb2444478ce2ca5a917ec7b0a3b0d24a6b9f32dbf32a2cf32df0fd07. 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/DKABA0900720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95acf0bb421eca945f82c7ca979f202c33faf51b5a754f99ec10baea8054885c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DKABA0900721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78223404b95440af5ca6aaa3dafb37c808c02762ef838770b5183c9e9e07eaff. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DKABA0510226.
Sku' Du Spørg' Fra No'en [Det Bedste Af Det Bedste]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b3c091e750085f40736a8276849d4b1a5058efb2bf4d4dc28ee56d66cf5622. 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/DKABA1100685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a5f409662fc31f31547b5fecfbb5081ce58a2bd4e54247229d56d9565e3ae7. 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/DKAZA1400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554677fe91d95c1a35b4cab27a5d0bce5b5168798db246b8aec34ebb7ca3e0d0. 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/DKABA9773513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131f57d2e461debed6d11aea729ebe3b933bf37d39e1a8dbd15caffb43342f97. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/DKAZA1400589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eeddf60b43f34404e7e44200d74590732f9a44d247214ee6473012f39e9221. 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/DKABA9773506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767b1801a372490b9ddaffdfd07fa435b99781816663204255a975dc0bd913bf. 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/DKABA9773510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07865dca306121c03720531eefe337153bc3f0869370af2574798c1841b686d9. 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/DKABA0701154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0b2bbff4843580a0a1d593a48d94251356150f3aa6912f0dceeb33c53c7129. 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/DKABA9773504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554677fe91d95c1a35b4cab27a5d0bce5b5168798db246b8aec34ebb7ca3e0d0. 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/DKABA9773513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c2e1796878bcb44429b740035eeeff06a33aab1b12f65989a17c753fc1dfde. 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/DKABA0601116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c2e1796878bcb44429b740035eeeff06a33aab1b12f65989a17c753fc1dfde. 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/DKABA0601116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07865dca306121c03720531eefe337153bc3f0869370af2574798c1841b686d9. 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/DKABA0701154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c2e1796878bcb44429b740035eeeff06a33aab1b12f65989a17c753fc1dfde. 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/DKABA0601116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b3c091e750085f40736a8276849d4b1a5058efb2bf4d4dc28ee56d66cf5622. 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/DKABA1100685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62e7c6204a0aa971ba165d6fddefb8d8b0b1aa42d9a527e477d5b9587de0235. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DKABA0510208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131f57d2e461debed6d11aea729ebe3b933bf37d39e1a8dbd15caffb43342f97. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DKAZA1400589.