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 0xd23622da41e9fa489c5b058e4009133624a8aef6a814080d8c48f56cdcf864ae. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25b4def6-b718-4885-a63a-e1e741393f56.json and https://artists.proofprofile.net/proofs/artist/25b4def6-b718-4885-a63a-e1e741393f56.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 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 0x18b95647b7b077701ed741f12410044a4bc10160fd60c63b10d4ede0b62c8eff. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEYSA0900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e9e4a1c7515f447cb5a010746f06531a87bcc4bb81fa350575c77152369e43. 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/SEYSA1500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb2c85e9d52727fadd7bbf41c857e5365da7dd0f4b9e0f1a7b860b4f24f3185. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/SEYSA1600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ec770a7f31813c1c4322b864009bfe21628ed959ba7982031b01fc1920037f. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/SEYSA1600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a31c042d89d53ab4ffa9f1d1002b7d290b70568266ff4d0181879ae0782f57b. 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/SEYSA1700201.
Överlever Sommaren - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa5bd992b0bc964a0579f5b73b6277a36b51ce6792526dff62f3f64cfe4ccf9. 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/SEYSA1700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71459308baeeef6e88c7540a266bed23e73f5a6a1dba7b6345243725ec4dcdbd. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/SEBGA1901265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0afea76f0992446c6039313cdc60831da66d7767cbbfdb6cb3cb8067e5a8d65. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DEAT71209950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ae85bc4ccb34a8bd6d8f01d14839d0fb54ddbcfdc8b318fd43858f18635636. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/SEUM71300868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd171c039523dd7a6338fd96b43b2483895d5a7bf702330c1fb97d1801e7c009f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NOWAT0905140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0797458cf2a0a991163405c05fae941897a9e4265046e92b3b23fe07d061630. 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/SE4NC1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c68868a5ce2060934e05b703876bf4f7a2a302a07471cb77da6ca0f2908f17. 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/SEYSA1600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7873e8935035b829bcabd52603fbbd803da59f474f64018edb1d38de9e5791ca. 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/SEYSA1600202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ac98e01147f032ca47018a988596c4d938dd9588f2c7e50d693916eba49895. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEUM71401733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530bdc491f083ca20de5c64c8758a0c7a66d9fee427efbc2315b48fa5426913c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/SEVGT1003402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee22a694bf17a9407081fa5b737d38631854be6955b85581914ac7f8dab04c1. 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/SEYSA1700101.