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 0x56928cda040df5b80f8f976b96d734b9e287718803634a25f74eba5146415afe. 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/1d4dabff-184f-49d2-8fcc-d3e09da5a44a.json and https://artists.proofprofile.net/proofs/artist/1d4dabff-184f-49d2-8fcc-d3e09da5a44a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Korte Sætningers Land (Sangene fra: Meter i Sekundet)
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 0x4564d68041a75e1db58a8c809b678c5b53d057dc7dd85bae6c6c4aa704067225. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DKC0D2100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856991f368c3f4179f1f769df77162467e1a66a974410e3533de54dc49bc06d3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DKC0D2100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada5d2e12c32eed18a5b902bf6f328016735fa12e41bccc77153df7a7c40cd60. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DKC0D2100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bdd189503657dd6d1d39543d0e43179d8e741f05a31a0ad34536723eff568a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DKC0D2100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4822bc13cf568665e3c4b2fb1fded08c313fd735ceb95fa4f3171217a0f7fec7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DKC0D2100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b81ebe6ca91761c2f2300339f7c1085d3ab4646ef3fc5ec43d51d86ade1862. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DKC0D2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fba54ae169e69611ea49d0fb45afd6866d5bbb90a51b52339bd3f5fffcaa85. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DKC0D2200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac241e9b4a7e427f5c8d5fd84c47d402664df608b6824cb317617ea42c4d727d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DKC0D2200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b869ca24aee5057a3a8417e0b464269e3cccdebc971d923c89950b44a6fedbd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DKJ2I2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f914e9ce3f26d2c44c67fefc366baaafd648fd2548df306f368ed16a0a0aa09. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DKJ2I2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd102a912760856910f629f483aba0b3198f61d6a60cbf4264bad9d605abb00c3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DKJ2I2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0109b52e5d2f1b9184651c28821d31077e0a004099391460eb3c1b1abfdb75e. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DKJ2I2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c91d48c45e020dc371a2c24b9752369f03cd6d9888482e8df6b8fb05a39f2c. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/DKJ2I2300012.
Jeg Ønsker Mig (Originalmusik fra Folketeatrets forestilling STOLT)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69d1c0c330305a15d46bafd59baf8f3433f636aacaf0ea1e2d73493f127376b. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/US38Y2581436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fd45a0a94aa767794b6107c363aebcf7a715ffd39248b4bb7c91d2e7322f5f. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/US38Y2581437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cdb857281437912636e082aff42f04332079adab73146631ff1a4ace10f8e5. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/US38Y2581439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78de47777d665ffe77bb716db7f5eaea808fad3baf3d415265e1e3bd2d9498f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/US38Y2581440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5055fda75f6b0b9cc4e57279816ce3c6eab59f2f49dc878176265d32d421152. 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/DKA9Z2500107.