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 0x27448c8cd5f6c441c074908671cea1e15b346b209628552fff726f34f5e78b46. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b70f846-4f5e-4416-b183-a4714ac0c083.json and https://artists.proofprofile.net/proofs/artist/3b70f846-4f5e-4416-b183-a4714ac0c083.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pyrus - Alletiders Julemand (Musik Og Sange Fra TV2's Julekalender - første gang sendt i 1997)
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 0x812a0c997e7b25d2d0f041a507d840f0c12fb65660dffaf238dc859f64a2660d. 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/DKAXA9784001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e3bc7214d1c6e91e8502eec0d112642f3fb9511956f5281db867e99633493a. 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/DKAXA9784002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0303447260ba42589ca1030f39a39cf4d64e602b7dbcca47c0866958b4baa0d2. 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/DKAXA9784003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a4248ccc6d25cc8028b737e715750681da5dfc9728a7fd15658509bd249a8e. 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/DKAXA9784004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243234ccbedb15eb2b0499cd8f49ecd05883278c25b8a5421c17cdc3cc7eba2c. 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/DKAXA9784005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3545317557ec3dea1a1af6bc2b4a31c358e0bd6e63b02ae5bfcb1a5046835d24. 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/DKAXA9784006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a62aa35c48c45b05b71d92bf4384eac36e6eb5abf4deef546d0f7fb7337034. 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/DKAXA9784007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e117bd46f0cb698de4584856f6fe778b6cf959e86e10fbaa85b0616f684a30. 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/DKAXA9784008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81284d67f650c0191f0937082c5e74f18f3c89e70589969580e343554993126. 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/DKAXA9784009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ed3c72ba67d171598f00d1f14f655b6138582c35342e7a6e5b6d9996306a8f. 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/DKAXA9784010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158bbe3ca2d41f09ffbd80e4b678cb626f8739ae3a964559e0c849359f8ef0b7. 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/DKAXA9784011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0f4ef974916c7b8d8d078e979870cec50439dba35d6f67b3565a6d27ad1c9b. 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/DKAXA9784012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2554d445d57e1c2c306713e124944335eb29320b868ce4035ec97bffc178af. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DKAXA9784013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdb00a1cd27357b63ca415fd627f4157b69f41406ca6e316a557e566dc5a1c0. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DKAXA9784014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bcd99dc9e67546be56eb83361233e43932ce4d5e23f5be8a7bd87d86d39c1d. 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/DKAXA9784015.
Pyrus - Alletiders Nisse (Musik Og Sange Fra TV2's Julekalender - første gang sendt i 1995)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e920829aab8e2c86bbe575a86d4d278c57f9b032721ddd0bfa42e552fb7d778. 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/DKAXA9589801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3529a0631bc62885def1a2f94bf6bd345191a349644df764065f13ca512642. 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/DKAXA9589802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2508878ba45b091f201844811eae449d47cad22fe49e9ff0513d8d07b1d751b1. 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/DKAXA9589803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec146f19875473198e524c07f9474518abc2ba10b634e6135e218b8a43899103. 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/DKAXA9589804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7877875aa9d7ceafcc29df43a922ad7127701a7c6249b4e10703851fab55a5c1. 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/DKAXA9589805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aaca3cd404fea195a5b2fe48a9da8e0ab1eff96c5c151fdeac601483751bf67. 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/DKAXA9589806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6125937b8d7b4777939ddba7f799cebfb5eef2eac2d1f5728856f2a849df610a. 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/DKAXA9589807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6d29c23cf5f9b019c51d6bfd95fc2fba1a2b52dad17ebb2a7d3b907ccd5d65. 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/DKAXA9589808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0dcfdb1ab33ac056ee925ca61c8143e66269b065e5dd432e7b4ee8e8a1e95f. 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/DKAXA9589809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa64e46184b353d9ebac3f5bfc6ace2ecf164091f82bc3644bab62666e865e4. 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/DKAXA9589810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5facc2045f7ea9b5c0891730e8892dfe558418bbc1bf7c7a747c3e2c6a637d3. 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/DKAXA9589811.
Pyrus, Josefine Brahe, Uffe Spade Andersen & Kandis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46680d78d73b44f6ef7cf956c4d403fd0763cea681ade59b0402f1928a4d9a4c. 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/DKAXA9589812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15814027b1a015d55920a3239bee6fd97b73b2c30d1bdb2e9d2e031e90e08b0e. 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/DKBV70606701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dd14116e00a91251f7b3247cf8bf1cf64ab9d0c777d9d030ad03898afd0380. 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/DKBV70701202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4295d188d5f65617fa08b99ef2123fdf289a19bb5c1939624ea018f5db6551. 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/DKBV70701204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823748ebcc7a8358a63e73d1db48b8df0594418feb9c33572f180500fb32f345. 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/DKBV70701206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b43eff37f8ba85ac64b7f9bab9c23fd37fe3d08beb87546ae8113e0ea2198c. 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/DKBV70701207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a89ee54e3f760eeb94313d24dca9cfb6593d534495db624fcd75493056c98d8. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DKBV70701209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4478ebbe0406b8f3d3a96559c620c2fa39e447860d99417c5db7f343af825977. 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/DKBV70701210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc41f9cd66a98f36d21d50d5cf9b3d7f46ece24a9cd8df59cda351d5f01e2150. 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/DKBV70700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e12c074eb7756655fd7d828a533970ba604fc56cbf02a5777ce972ba0ce83. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DKBV70701211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed31c9f2f90291b13dd24d7805958dc529c1d025286126ceee798d235f7ab4e1. 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/DKBV70701212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35863fd62719d0b6bfc46a8bf2fb7a424d5b9005f03ce685fa4fc264b841e12d. 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/DKBV70701213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f3691ded7c095174dfa7ee515f380c3909eb503072c319aaaf9f79354af551. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DKBV70701501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15169fc762d631a0c201238d3ae19915fed413266635f7438d3a493320630d75. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DKBV70701214.