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 0xfa333694728f23f6d5037bddd16afb07f9e0f19a502b8439ac7bfc3ec1886eaf. 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/5d309a8b-d698-4183-971d-6e84ebb7837d.json and https://artists.proofprofile.net/proofs/artist/5d309a8b-d698-4183-971d-6e84ebb7837d.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 0x678e3c65cfb626e449907b61670b4117eb4e1bf8ac6fc75072b083cc8f4e4a42. 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/DKAZA2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242660700e97f081c0429b9f7b39a419c1ce3029a24c875e6c02b7c562cce984. 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/DKAZA2300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13f44c195cfdb2e1dca7a45fffe7c177c63b9bd001c6bfbfaff00fbafcc7938. 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/DKAZA2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b125117c6166eb6472e81dabd53e347ee67a079a94c2a9438c43e2f530b56b. 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/DKAZA2300245.
Næsten At Forveksle Med Kærlighed (feat. Saso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15b8f7727dfb83c5aa99c5f34154b506981689dbed2c256d155114908692c3a. 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/DKAZA2300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f59ffb1a1f67bb160ffc9401ab1370b0c4b7de406cbf90ebdeeb57d09ecdd8c. 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/DKAZA2300249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25647fa503858c6b754aed7089b5d1cf946bc3ef85ec4fd50dbf396b8463320. 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/DK4YA2084010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef13b946e3ce82682ccb1f0faca8cb6ec98c1473987a8d3506a9f2e5431fcae. 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/DK4YA2084011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e387921307ec50f55e2b83c261f873a260fc2e23faffac7dae44b8a67e17e9. 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/DK4YA2007901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b97959536e2e6d12226170f1245617ba0d7aa60b315d17490d743c01321ffa2. 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/DK4YA2084001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e25341710d5018f6e4e1b757fbf5864596e62b569dbc96157c56645a199113. 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/DK4YA2084015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312ae962a2ebbb406abc92b4ce3545b387069d25b23b2b49848a099995c99849. 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/DK4YA2084016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ba4938242e166b66cc1fa875f2de1c1b72477e995c9d53a9badf52ef3ca37c. 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/DK4YA2084017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cff7e919e1df69dfaf646aa32c1c830bbac054b32eb99674c98ca603f537fb. 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/DK4YA1902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c177576bbdc8822944e5ed447e1daf90586c88b85d2a63c5851574909dba145. 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/DK4YA1814701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a4667115ffb3ce77abecec76f87ef3e5c67d86e5cc7f346ebef3245a4b3e82. 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/DK4YA1902003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8e9bc8d4ec3f52001dcf755adeffaa33577eabaa057921c60df84579b59120. 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/DK7N31600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a0e6c1b3aa439527db60c66dce20786c20a37327d2165791585e3f8393ab21. 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/DK7N31600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c88f0e88d1cf671d909ddfc610f9087f58b6af735dfabc2091d22733e0e5f1. 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/DK7N31600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8884661012c4aee95f37c429d6de349f46f218818ade672c434e5fbad7ed7aa4. 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/DK7N31600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7acdf7b4389bff135ed4a8768466e51bd25218d987553c81f5afee2a6e1a4ed. 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/DK7N31600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678e3c65cfb626e449907b61670b4117eb4e1bf8ac6fc75072b083cc8f4e4a42. 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/DKAZA2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13f44c195cfdb2e1dca7a45fffe7c177c63b9bd001c6bfbfaff00fbafcc7938. 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/DKAZA2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561353b73d69701d02bf790a190cadedc92a63b6589e4f626cfe58f7aa752c46. 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/DKUM72200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8f8ef0a8530aaabe0213b8b063e6dba382e4aded2c87e3832d364f0ee3ebcf. 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/DKUM72100274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f01269265055cde5767ade770db5c48de8013bb578feecdd07891cbbd4e97d. 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/DKUM72100390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a464164e3220eee4493669c62dc7b40e0f4462c6293296c5a26a19e304c71da. 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/DKUM72100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf551268908813a768155ce1cce910ae5d856b40373393983cfd27bec0cacb4d8. 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/DKUM72200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b97959536e2e6d12226170f1245617ba0d7aa60b315d17490d743c01321ffa2. 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/DK4YA2084001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e387921307ec50f55e2b83c261f873a260fc2e23faffac7dae44b8a67e17e9. 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/DK4YA2007901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31b0fc250940f32a09093cb8498fe493cc00091d2607bbdf7c8fa2787d2ceb2. 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/DK4YA1909201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c177576bbdc8822944e5ed447e1daf90586c88b85d2a63c5851574909dba145. 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/DK4YA1814701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9644600b56f00b8818dd4e67541a8890ed57aa68b94ba231c1007c745da3413. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DK4YA1708802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7877f80f3e57223980e57ceef258c919cf42752d5c0fc488c0a853acf535283b. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:31:37Z), 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/DK4YA1708803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194097424f45d54e5c3b152f7c2e5b7a749040687636c7006d35637c1950cee9. 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/QM6N22566484.