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 0x1ea709cdebdfde8edbe6f7ea8f8bd57f1ce0f73bc0dffb0342e239f015b9d574. 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/0538ba82-3b2f-4edc-8801-c45043611151.json and https://artists.proofprofile.net/proofs/artist/0538ba82-3b2f-4edc-8801-c45043611151.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e5bb9289aedca36732eae2588d2b923bb36b8337650f0db109c3c04fb57ae7. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SEXEV1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2dc778d869977d471c8310e8cf98728113aa95d2ae554ad597b35397b329fe. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEXEV1700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955a84d3e4db50adf040ef9c6145c11de513ac0327772450d76df334033fbcd0. 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/SEXEV0600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77930f7fedb27650e5f91fc2821b0d0093d791ef07eb2a69194ada37186a923. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/SEXEV0600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d8ddced11e40d147d27a6b8d7364117a7712c08691ea74b05ab1cf4bc8c5e4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SEXEV0600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb8599e988567f0c025094b18b683e5afe9fb2d19416139830442e943119339. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:36:40Z), 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/SEXEV0600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916b192584c01948dd0027bfb2ed1c6e27cc0451c52fda2ad770f0c5ae5e10a7. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SEXEV1700404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5cf667838d87da5bd71ce6378b116e0f085aaaa93126f7b39124bea8e21f34. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SEXEV1700406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5988276c773c5e7c28c22c89beb3ca98d67ed31910e2bbed8d07b90d16f7c38. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:48Z), 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/SEXEV1603303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0046228ab660965d6688101e3b836006e37467f8b7156303de488ca2438c1aff. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEXEV1603305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748959a1e5c2318af9d7d8e9d3f54e66aae27e5281b25198324fae98895814af. 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/SEXEV1603306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f61eb2856ce6ed4b3954bd33dac5dfd264dd3210fbe64a76cb0c1d44f520673. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEXEV1603308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610344be7bb1cae3d19ec70abd15f682cf014859258521760a255c7ed6486949. 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/SEXEV1603309.
Hej lilla smultron (Baby- Och rörelsesånger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972e3e31bf4145bc4201731a6850e4b039783e5dc5db37445139321065c9da8e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:46:21Z), 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/SEXEV0803304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f73632513bdf19acc9df2c8101a0058b107737cc06db73e2cdc44cd6cccc540. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEXEV1800304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598d1071c41b03b4f10e9b2048181174aa0e288bb52871e46870358275642c3a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/SEXEV2009803.