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 0x9dd8b88909577d26c059886bb9cfd8280f5997c74937f6b51a144b46f09f910d. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87631238-46aa-49b4-8946-b6d37dca8ce3.json and https://artists.proofprofile.net/proofs/artist/87631238-46aa-49b4-8946-b6d37dca8ce3.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 0xbd06f29353814954b2d1a9840623ab4db8efd09d77cd0ae54d9279e234d1ca9a. 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/TCABK1267594.
Jól Eins Og Áður (feat. Sverrir Bergmann, KK, Birgir, Sigga Beinteins, DJ Muscleboy, Aron Már Ólafsson, Ragga Gröndal, Katrín Halldóra Sigurðardóttir & Jón Gnarr)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088ecb4ab27fc93ef184cea75f6345353a30173986f77aa0a6e091cdd3a76cb3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ISV441803101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a1c3fb742bbb7fd269ced03b03d47f6962494fbfba8c37c50f5a3efdacb620. 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/ISV441604501.
Hear Them Calling (Iceland 2016 ESC Entry)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab24eae99e09d73c7dc68825e98f5bffec96d32ea8d1cc68c312d9985f1f74c. 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/TCACM1677568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edcad17b5f16de39a13402d19a3b144e382ddd99a65845371e4a37b1dd7f6f0. 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/TCABE1280248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0b55f6f0dee13e9af8c877761579ebc757110376c082de648a1090c3b7f117. 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/TCABG1219072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0171f86b07de5cb487258703827c9ae595e6c1bb6b2fdc00c115c34ccf4bc612. 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/TCABG1219076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cff70890190b9e23a16269e942cfb7fdb9cbf43cc2237271a3b97ec40fdfaa1. 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/TCABG1219090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547205d12cf4965440b2bc6305a9713cc052d6eb5d1d55883d16f69eb485be0f. 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/ISA111200504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6039ed5bf07e50fdaf0f4aaca83d501f358d68cee43a8e88297718ffb428f7. 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/ISA111200508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9799e48d128ff956b80f416efa8dcb69549947c17fa4cc96a334314531588a. 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/ISV441304418.
Never Forget, the Album (Iceland Eurovision 2012)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dfebe4abf1bdae720c9eb192cde6ae6dac07f3bfca08fc7ab27a4bae4161e0. 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/TCABG1202587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85ca0a544c54fcdd3a4099e1bff2b17703df567770911ae5e1a50588ad73c2f. 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/TCABG1202592.
Iceland Grand Prix Eurovision 2012, Songvakeppni Sjonvarpsins 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b59947889d64ab5b17c57f0e9100ae48c9ce9bd27fe4df0bde7606fcfb5732. 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/TCABE1203485.
Söngvakeppnin 2016 (Eurovision Song Contest Iceland 2016)
Söngvakeppnin 2016 - Lögin í úrslitum (Iceland ESC 2016 - The Finalists)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb3f938ae289714b8a75bff12b3f0077bc19a221df9e7abdc14f88264d84283. 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/ISV441600606.
Söngvakeppnin 2016 - Úrslitalögin (Iceland ESC 2016 - The Finalists)
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