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 0x2ba3cd4f0263136f89cf64e422aa3cd874067fbe817e65351bded070a0e57bd1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2344c374-71a8-475b-93b8-262e9e4456d8.json and https://artists.proofprofile.net/proofs/artist/2344c374-71a8-475b-93b8-262e9e4456d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Halli Halli Hallo - Vi vinder i Mexico (Officiel fodboldsang, VM i Mexico 1986)
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 0xdd7a3aadad297216de9a7e87f4afd77ead65fc5668bdcc445140f0ce659df5a1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DK3S72001401.
Mexico - En fodbold fiesta (VM i Mexico 1986)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8848b46777638d02791a7c32ea42df0d28c409cadaee8d96c11a1903ac4fd137. 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/DK3S72001410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9fd70d10ebcc4d27044e6e927c665554e3236d0aad7fafc2d73ff4b3e56f48. 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/DKAAH9601002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922368484018ece4ad09dffd6dd79e7fb28d410fabdb28f0fb5c00aa07d4024c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKAAH9601003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24881bd8318d3979386f3885b6cd0a8ef2f5a2d14891b6fd0617a64807d87fd2. 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/DKAAH9601006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452497d47172833b9daa3fda10a55ee34e6b67260bfa6561019632c7543ba35b. 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/DKAAH9601012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf124717008842d1b8ca29b35ce54cee9d82ff70ca73d4bfe798e7810d1c56e05. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKAAH0100313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82fef40c76d085feae7ac9bc084f92047dff4ee02d9309b16d58546f903c31f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKBKA0300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba45ea8ba8aa44f9dc9cea48cb38a3aaba43a5855314030616e8a0f69241f210. 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/DKBKA0300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601d18ad229df68dd729d43636e51e9702d57ae48c445788dbe6fdd2c36aca5c. 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/DKBKA0300292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ecb92f5c67f304c555a5fe67471d002f35739bb4e03d2cd0e1de78722f1c47. 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/DKAAH0100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9fd70d10ebcc4d27044e6e927c665554e3236d0aad7fafc2d73ff4b3e56f48. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKAAH9601002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922368484018ece4ad09dffd6dd79e7fb28d410fabdb28f0fb5c00aa07d4024c. 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/DKAAH9601003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24881bd8318d3979386f3885b6cd0a8ef2f5a2d14891b6fd0617a64807d87fd2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKAAH9601006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2b6c500b541953f2f2bafbbcfe724fd8bf481ddcfdfa07b16d5bd5562444ed. 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/DKBKA0300860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3113238273df01339d28925dfc8dda71fcbde31100ea1aa6c4b64b06e546132f. 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/DKAAH0100312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b2a952ed643a138a505ba2d88cd9b91cee85302ffd5b55a2ae0584ad37df9e. 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/DKBKA0300874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750ec331a1fe5211515111a1729f1c5b96b59d5d8bf37eeb875b592377ee4b4c. 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/DKBKA0300881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5120b6b268c300a82e42190d626b098fdfbcfc6009067d30f08afb587a474d. 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/DKBKA0300872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf124717008842d1b8ca29b35ce54cee9d82ff70ca73d4bfe798e7810d1c56e05. 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/DKAAH0100313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678da3350d097045b301cca59a1af0b000ced4003b0e8893392edf52009e307a. 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/DKBKA0300898.
Kom Med Til Party / Peter Belli & Søn / Henrik Henrik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07635050c956f341cab0a63c0a18b7280aa8bc150cabddbc78eafb5c0d7dc452. 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/DKBKA0300886.
Hjerter Af Honning / Det Er Vores Bryllupsdag
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48faa3e0cb378f8759218497241367cf707e7161db0f88d3baf65f4f91a29bae. 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/DKBKA0300879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47007ade8229accfae725e15780402d50d3e25e72245f28add2da5811f6ebe6. 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/DKBKA0300893.
Hvor Er Alle Drømmene Du Drømte / Hjertelig Tak
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0bb632adef7d87300bb490e76c4501b5e386bac9b5cea20580cea4c1b11e87. 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/DKBKA0300880.
Da Farfar Var Ung / Ædelsten Og Røde Roser / Snart Er Du Mer' End 17 År
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5227c0a2be292e3224c024fe56c4e4735715d141c9546900769a743bd32bb3d3. Chain 2 (Bitcoin): anchored in block 957227 (2026-07-08T21:49:37Z), 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/DKBKA0300863.
Tennessee Waltz / Venter På En Banegård / En Sød Student Fra Holstebro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842167cab74371e1e24bb15239b56e01b27e41986c6edb55bcf82bce165ae7d0. 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/DKBKA0300902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a3108c1e4483a9b79ef9f099843f7f07ceb31dec8022eaf0db03d2027f396b. 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/DKABA1000834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a863fb284a5326c051e6004e1e5285381c0b5fcd158125dc8435a46b6dc861. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKABA1000840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34b58c9c2342adb6f9323a55574e67c1babaa0bce97a3a3b346347310ed394f. 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/DKABA1000841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd61cd412f3ce529d1e600407a2575b70e888659eae8bcb2e28011bef1093f60. 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/DKABA1000842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd34b3b9690db1ad8d0399d2022c1383bf705cb971ed94f6fc421363b2e2da4e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKABA1000844.
Du må ta' mig som jeg er / En lille ring af guld / Lørdag aften
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8c9831d2440cacedb2ef51671b7b80bc105e0c2f5c3358e47c3b53194a3f3c. 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/DKAZA1400970.
Achy breaky dans / Sammen vender vi strømmen / Sexchikane
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b496e7912a16a0e630aa9441ddf4bbc971c6e7c73d78673dbd7c329fb660288. 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/DKAZA1400973.
Dagbogen / Bar' det var mig / Susanne, Birgitte & Hanne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a006b2fc5f3ed62f824d90924fd2ae188e38bdb32fe0e337495d7baf879ebc. 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/DKAZA1400977.
Der kommer altid en sporvogn og en pige til / Hej for dig og hej for mig / Det er sommer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1826acc94ca11d51cc5872825db25debc2bda8cc81248d175140938b43c4ef25. 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/DKAZA1400979.
Sig Mig Hva' Du Ude På? - Dansk Melodi Grand Prix 1987
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c551d10cda033c561be403bae370a60d9959928602ede97eaf79870b6bd93a. 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/DK3S72001301.