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 0xb890eaf4b58baab81d6f5df58c8ec163531afe1b25285406e2e6198ff5bede1a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7ae58a7-ffb1-4723-8a72-4a843c68b240.json and https://artists.proofprofile.net/proofs/artist/e7ae58a7-ffb1-4723-8a72-4a843c68b240.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schlagerkavalkaden 13 - Rosen och Fjärilen - 1954-55
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 0x96d696ac081d160470f4a0203e9125067e22c9be9d7811f47615ffc41fa8f7cc. 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/SEVHR0200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba6bcb9c0c6db91864c2ee184b69c6af39454a0d42e538b7c035b367d6f6f7b. 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/SEAMD5431010.
En sliten grimma (There's a Bridle Hangin' on the Wall)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1162121e451ab1865511adb0875b31ef58166812f9198fd2def4403e1889edf6. 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/SEAMD5831020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f405eda6415e6611bc41c1b9b10ae36b2f50f8ccef4233b0c98e7a408692af2. 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/SEAMD5631030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cfdefa88476c9855a7353e00e5809203994db2a0e3b2b44acdd9126d73346b. 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/SEAMD5631040.
Min gula ros i Texas (The Yellow Rose of Texas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac82e6291225330207a4d200c472e8b3d63d4f3e2f086db2cf4686d825666360. 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/SEAMD5531050.
När det våras i bland bergen (When It's Springtime in the Rockies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295a0ad11bc881aafcca046dac251c61afd7c1acb4040580e54c6e46cc5a3592. 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/SEAMD5431060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffeacdfda311623f89c64a9fdba82dc73a5481f122ee0801d732189dd4e07e7. 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/SEAMD5431070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dd3751f6c85885ca1c634bfc6c11e1ca7274716442a50392468e6cfcc5ccab. 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/SEAMD5431080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a036ed4d06bc5ef491392364a3eba29c35f8c0010c19098b30e1f07bf75f20. 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/SEAMD5831090.
Boken om mitt liv (The Story of My Life)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa088fb187bd6a7a5eb2204e58e21dcb0d1406685ae49cb3ef54403423d549565. 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/SEAMD5831100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fbc2d000ff07679e3a2000286baaa2e02c86af0788b8d2152c8bd2c962d915. 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/SEAMD5431110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5406781b787b744dbae1b667f9fc4116701aa278fb0c45e6509a5b07d155b542. 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/SEAMD5531120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2d6193da50011791c213b47b72bea7ddd9f5ff48c47983d21b07af75a40aab. 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/SEAMD5931130.
Väck upp hela stan (Wake the Town and Tell the People)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b5851484ddb15ef7d7d474ce68e142c1758560eb11e7efa4571ccf4f76eb97. 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/SEAMD5531140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e8fee068549e8a2b9078ec8a90bb40275ba933bc05737bf90bc191f7e91efc. 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/SEAMD5531150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dc33262b2daa829622d14fe85458a9265111f19593cfaca85bc796bda5241b. 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/SEAMD5831160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c51410b4b13970edd55f850efa59b036feefe2592fc619214730c3db6e6a461. 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/SEAMD5431170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13f9ddf8d15906916fed65b872be2ccc710190e1df241d37c1e102bc8f71566. 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/SEAMD5731180.
Kärleksbrev i Sanden (Love Letters in the Sand)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb72f1d9aac417a97370dcf7bdf6089757d7ff71cb50d363853f3446344b16b. 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/SEAMD5731190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8702468a34f254116a386cca45c28eb212cb82cc2a2513d5ab68dc1fd65e94f. 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/SEAMD5531200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ecd8f39f355814a0ca92be733ab5c218d67ef0598d236413ab609b0ba6af02. 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/SEAMA0500554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677f767c6eb1c08af8a50e367ac97bc2a2401687b7a3e488101ee8633f2a4b6a. 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/SEAMA0500555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e450858c940dace82df214af889790f493bae05fb1c70096ebb79238638a15. 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/SEAMA0500556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb282c34d0707dbc9753a5f36c9a1796f188b3e4be354e65d5f51d2ebdb43e046. 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/SEAMA0500569.
Flickan I Smala Gränd (The Naughty Lady Of Shady Lane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0e37fb9ab88e165093b1318c5268d33ce39666120e9c842ea1273c68ecdbcb. 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/SEAMA0500557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb243804b8063f92614a233b3f06342782ae0c9a778e316619fda3efb1e75ba8d. 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/SEAMA0500558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53b6b835f1b2ac557fe5673aeda90ce7bf4a1726cffc93fcbc5da7df8e10c11. 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/SEAMA0500559.
Nordlandsnetter: Melodiminner Fra 1952 (Lirekassen No. 16)